* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Home -> Astronomy News -> Solar System -> Ceres
Post Info TOPIC: Ceres
Blobrana


L

Posts: 131433
Date:
RE: Ceres
Permalink  
 

Title: The remarkable surface homogeneity of the Dawn mission target (1) Ceres
Authors: Benoit Carry, Pierre Vernazza, Christophe Dumas, William J. Merline, Olivier Mousis, Philippe Rousselot, Emmanuel Jehin, Jean Manfroid, Marcello Fulchignoni, Jean-Marc Zucconi

Dwarf-planet (1) Ceres is one of the two targets, along with (4) Vesta, that will be studied by the NASA Dawn spacecraft via imaging, visible and near-infrared spectroscopy, and gamma-ray and neutron spectroscopy. While Ceres' visible and near-infrared disk-integrated spectra have been well characterized, little has been done about quantifying spectral variations over the surface. Any spectral variation would give us insights on the geographical variation of the composition and/or the surface age. The only work so far was that of Rivkin & Volquardsen (2010, Icarus 206, 327) who reported rotationally-resolved spectroscopic (disk-integrated) observations in the 2.2-4.0 {\mu}m range; their observations showed evidence for a relatively uniform surface. Here, we report disk-resolved observations of Ceres with SINFONI (ESO VLT) in the 1.17-1.32 {\mu}m and 1.45-2.35 {\mu}m wavelength ranges. The observations were made under excellent seeing conditions (0.6"), allowing us to reach a spatial resolution of ~75 km on Ceres' surface. We do not find any spectral variation above a 3% level, suggesting a homogeneous surface at our spatial resolution. Slight variations (about 2%) of the spectral slope are detected, geographically correlated with the albedo markings reported from the analysis of the HST and Keck disk-resolved images of Ceres (Li et al., 2006, Icarus 182, 143; Carry et al., 2008, A&A 478, 235). Given the lack of constraints on the surface composition of Ceres, however, we cannot assert the causes of these variations.

Read more (591kb, PDF)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Title: Determination of Ceres mass based on the most gravitationally efficient close encounters
Authors: Andjelka B Kovacevic

Here is presented recalculated value of the mass of Ceres, based on explicit tracking of its gravitational influence on orbits evolution of 21 selected asteroids during their mutual close encounters (CE). It was applied a new modified method (MM) for mass determination, based on the connecting of pre-encounter observations to the orbit determined from post-encounter ones. The calculated weighted mean value of Ceres mass, based on modified method, is (4.54 ±0.07)\,10^{-10} solar masses while standard procedure (SM) provided result of (4.70 ±0.04)\,10^{-10} solar masses. We found that correlation between individual estimated masses based on modified and standard method is 0.78, which confirms reliability of using modified method.

Read more  (737kb, PDF)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Tonight asteroid 1 Ceres is at opposition, which is a very good time to observe an asteroid or planet. It is located in Cetus, near the boundary with Aquarius. You'll need at least binoculars and a good finder chart to see it, since its magnitude of 7.2 puts it well beyond what can be seen with the unaided eye. Ceres was the first asteroid ever discovered. It was found even though no one was looking for it.
Read more 

Google Earth file: Dwarf planet (1) Ceres.kmz (8kb, kmz)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Asteroid (1) Ceres makes its closest approach to the Earth (1.989 AU) on the 17th September, 2011.

Asteroid (1) Ceres is at Opposition (7.6 Magnitude) on the 17th September, 2011.



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Title: Constraining Ceres' interior from its Rotational Motion
Authors: Nicolas Rambaux (IMCCE), Julie Castillo-Rogez (JPL), Véronique Dehant (ROB), Petr Kuchynka (IMCCE, JPL)

Context. Ceres is the most massive body of the asteroid belt and contains about 25 wt.% (weight percent) of water. Understanding its thermal evolution and assessing its current state are major goals of the Dawn Mission. Constraints on internal structure can be inferred from various observations. Especially, detailed knowledge of the rotational motion can help constrain the mass distribution inside the body, which in turn can lead to information on its geophysical history.
Aims. We investigate the signature of the interior on the rotational motion of Ceres and discuss possible future measurements performed by the spacecraft Dawn that will help to constrain Ceres' internal structure. Methods. We compute the polar motion, precession-nutation, and length-of-day variations. We estimate the amplitudes of the rigid and non-rigid response for these various motions for models of Ceres interior constrained by recent shape data and surface properties.
Results. As a general result, the amplitudes of oscillations in the rotation appear to be small, and their determination from spaceborne techniques will be challenging. For example, the amplitudes of the semi-annual and annual nutations are around ~364 and ~140 milli-arcseconds, and they show little variation within the parametric space of interior models envisioned for Ceres. This, combined with the very long-period of the precession motion, requires very precise measurements. We also estimate the timescale for Ceres' orientation to relax to a generalised Cassini State, and we find that the tidal dissipation within that object was probably too small to drive any significant damping of its obliquity since formation. However, combining the shape and gravity observations by Dawn offers the prospect to identify departures of non-hydrostaticity at the global and regional scale, which will be instrumental in constraining Ceres' past and current thermal state. We also discuss the existence of a possible Chandler mode in the rotational motion of Ceres, whose potential excitation by endogenic and/or exogenic processes may help detect the presence of liquid reservoirs within the asteroid.

Read more (505kb, PDF)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Title: Constraining Ceres' interior from its Rotational Motion
Authors: Nicolas Rambaux (IMCCE), Julie Castillo-Rogez (JPL), Véronique Dehant (ROB), Petr Kuchynka (IMCCE, JPL)

Context. Ceres is the most massive body of the asteroid belt and contains about 25 wt.% (weight percent) of water. Understanding its thermal evolution and assessing its current state are major goals of the Dawn Mission. Constraints on internal structure can be inferred from various observations. Especially, detailed knowledge of the rotational motion can help constrain the mass distribution inside the body, which in turn can lead to information on its geophysical history.
Aims. We investigate the signature of the interior on the rotational motion of Ceres and discuss possible future measurements performed by the spacecraft Dawn that will help to constrain Ceres' internal structure. Methods. We compute the polar motion, precession-nutation, and length-of-day variations. We estimate the amplitudes of the rigid and non-rigid response for these various motions for models of Ceres interior constrained by recent shape data and surface properties.
Results. As a general result, the amplitudes of oscillations in the rotation appear to be small, and their determination from spaceborne techniques will be challenging. For example, the amplitudes of the semi-annual and annual nutations are around ~364 and ~140 milli-arcseconds, and they show little variation within the parametric space of interior models envisioned for Ceres. This, combined with the very long-period of the precession motion, requires very precise measurements. We also estimate the timescale for Ceres' orientation to relax to a generalised Cassini State, and we find that the tidal dissipation within that object was probably too small to drive any significant damping of its obliquity since formation. However, combining the shape and gravity observations by Dawn offers the prospect to identify departures of non-hydrostaticity at the global and regional scale, which will be instrumental in constraining Ceres' past and current thermal state. We also discuss the existence of a possible Chandler mode in the rotational motion of Ceres, whose potential excitation by endogenic and/or exogenic processes may help detect the presence of liquid reservoirs within the asteroid.

Read more (505kb, PDF)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Google Earth file: Dwarf planet (1) Ceres.kmz (8kb, kmz)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Title: A Search for Satellite around Ceres
Authors: A. Bieryla, J. Wm. Parker, E.F. Young, L. A. McFadden, C. T. Russell, S. A. Stern, M. V. Sykes, B. Gladman

We conducted a satellite search around the dwarf planet 1 Ceres using Hubble Space Telescope and ground-based Palomar data. No candidate objects were found orbiting Ceres in its entire stability region down to ~500km from the surface of Ceres. Assuming a satellite would have the same albedo as Ceres, which has a visual geometric albedo of 0.07-0.10, our detection limit is sensitive to satellites larger than 1-2 km in diameter.

Read more  (150kb, PDF)



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Asteroid (1) Ceres is in conjunction with the Sun at 1:00UT, 31st January, 2011

__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2011 06 19    00 05 43.6 -11 21 37   2.7961  2.9833    90.5    19.9     9.0
2011 06 20    00 06 30.3 -11 20 37   2.7827  2.9832    91.3    19.9     9.0
2011 06 21    00 07 16.2 -11 19 44   2.7693  2.9832    92.0    19.9     9.0
2011 06 22    00 08 01.2 -11 18 58   2.7559  2.9831    92.8    19.9     8.9
2011 06 23    00 08 45.4 -11 18 19   2.7425  2.9831    93.5    19.9     8.9
2011 06 24    00 09 28.7 -11 17 48   2.7292  2.9830    94.3    19.9     8.9
2011 06 25    00 10 11.2 -11 17 25   2.7158  2.9829    95.1    19.8     8.9
2011 06 26    00 10 52.8 -11 17 09   2.7024  2.9828    95.9    19.8     8.9
2011 06 27    00 11 33.4 -11 17 01   2.6891  2.9828    96.6    19.8     8.9
2011 06 28    00 12 13.1 -11 17 00   2.6758  2.9827    97.4    19.8     8.9
2011 06 29    00 12 51.9 -11 17 07   2.6626  2.9826    98.2    19.7     8.9
2011 06 30    00 13 29.8 -11 17 22   2.6493  2.9825    99.0    19.7     8.9
2011 07 01    00 14 06.6 -11 17 45   2.6361  2.9825    99.8    19.6     8.8
2011 07 02    00 14 42.5 -11 18 16   2.6229  2.9824   100.6    19.6     8.8
2011 07 03    00 15 17.4 -11 18 55   2.6098  2.9823   101.4    19.5     8.8
2011 07 04    00 15 51.3 -11 19 41   2.5967  2.9822   102.2    19.5     8.8
2011 07 05    00 16 24.2 -11 20 36   2.5836  2.9821   103.0    19.4     8.8
2011 07 06    00 16 56.0 -11 21 39   2.5706  2.9820   103.8    19.3     8.8
2011 07 07    00 17 26.8 -11 22 50   2.5577  2.9819   104.7    19.3     8.8
2011 07 08    00 17 56.6 -11 24 09   2.5448  2.9818   105.5    19.2     8.8
2011 07 09    00 18 25.3 -11 25 36   2.5319  2.9817   106.3    19.1     8.7
2011 07 10    00 18 52.9 -11 27 12   2.5192  2.9816   107.1    19.0     8.7
2011 07 11    00 19 19.4 -11 28 55   2.5064  2.9815   108.0    18.9     8.7
2011 07 12    00 19 44.8 -11 30 47   2.4938  2.9813   108.8    18.8     8.7
2011 07 13    00 20 09.1 -11 32 47   2.4812  2.9812   109.7    18.7     8.7
2011 07 14    00 20 32.2 -11 34 55   2.4687  2.9811   110.5    18.6     8.7
2011 07 15    00 20 54.3 -11 37 11   2.4563  2.9810   111.4    18.5     8.7
2011 07 16    00 21 15.1 -11 39 36   2.4439  2.9809   112.2    18.4     8.6
2011 07 17    00 21 34.8 -11 42 09   2.4317  2.9807   113.1    18.3     8.6
2001 07 18    00 21 53.4 -11 44 50   2.4195  2.9806   114.0    18.2     8.6
2011 07 19    00 22 10.7 -11 47 39   2.4074  2.9805   114.8    18.0     8.6
2011 07 20    00 22 26.8 -11 50 37   2.3954  2.9803   115.7    17.9     8.6
2011 07 21    00 22 41.7 -11 53 43   2.3835  2.9802   116.6    17.8     8.6
2011 07 22    00 22 55.3 -11 56 57   2.3717  2.9801   117.5    17.6     8.5
2011 07 23    00 23 07.7 -12 00 19   2.3600  2.9799   118.4    17.5     8.5
2011 07 24    00 23 18.9 -12 03 49   2.3484  2.9798   119.3    17.3     8.5
2011 07 25    00 23 28.7 -12 07 28   2.3369  2.9796   120.2    17.1     8.5
2011 07 26    00 23 37.3 -12 11 14   2.3255  2.9795   121.1    17.0     8.5
2011 07 27    00 23 44.6 -12 15 08   2.3143  2.9793   122.0    16.8     8.5
2011 07 28    00 23 50.5 -12 19 11   2.3032  2.9792   122.9    16.6     8.4
2011 07 29    00 23 55.2 -12 23 21   2.2922  2.9790   123.8    16.5     8.4
2011 07 30    00 23 58.5 -12 27 38   2.2813  2.9789   124.7    16.3     8.4
2011 07 31    00 24 00.5 -12 32 04   2.2706  2.9787   125.6    16.1     8.4
2011 08 01    00 24 01.1 -12 36 36   2.2600  2.9785   126.6    15.9     8.4
2011 08 02    00 24 00.4 -12 41 16   2.2495  2.9784   127.5    15.7     8.4
2011 08 03    00 23 58.3 -12 46 03   2.2393  2.9782   128.4    15.5     8.3
2011 08 04    00 23 54.8 -12 50 57   2.2291  2.9780   129.4    15.3     8.3
2011 08 05    00 23 50.0 -12 55 58   2.2191  2.9778   130.3    15.1     8.3
2011 08 06    00 23 43.9 -13 01 05   2.2093  2.9777   131.3    14.8     8.3
2011 08 07    00 23 36.4 -13 06 19   2.1996  2.9775   132.2    14.6     8.3
2011 08 08    00 23 27.5 -13 11 39   2.1901  2.9773   133.2    14.4     8.3
2011 08 09    00 23 17.2 -13 17 05   2.1808  2.9771   134.1    14.1     8.2
2011 08 10    00 23 05.6 -13 22 37   2.1717  2.9769   135.1    13.9     8.2
2011 08 11    00 22 52.7 -13 28 14   2.1627  2.9767   136.0    13.7     8.2
2011 08 12    00 22 38.4 -13 33 57   2.1539  2.9765   137.0    13.4     8.2
2011 08 13    00 22 22.7 -13 39 45   2.1453  2.9764   138.0    13.2     8.2
2011 08 14    00 22 05.7 -13 45 38   2.1369  2.9762   138.9    12.9     8.1
2011 08 15    00 21 47.4 -13 51 36   2.1287  2.9760   139.9    12.7     8.1
2011 08 16    00 21 27.7 -13 57 38   2.1207  2.9757   140.9    12.4     8.1
2011 08 17    00 21 06.6 -14 03 44   2.1128  2.9755   141.8    12.1     8.1
2011 08 18    00 20 44.3 -14 09 54   2.1052  2.9753   142.8    11.9     8.1
2011 08 19    00 20 20.6 -14 16 07   2.0978  2.9751   143.8    11.6     8.1
2011 08 20    00 19 55.7 -14 22 24   2.0906  2.9749   144.7    11.3     8.0
2011 08 21    00 19 29.4 -14 28 44   2.0836  2.9747   145.7    11.0     8.0
2011 08 22    00 19 01.9 -14 35 06   2.0769  2.9745   146.7    10.8     8.0
2011 08 23    00 18 33.1 -14 41 31   2.0704  2.9743   147.6    10.5     8.0
2011 08 24    00 18 03.1 -14 47 58   2.0640  2.9740   148.6    10.2     8.0
2011 08 25    00 17 31.9 -14 54 26   2.0580  2.9738   149.5     9.9     7.9
2011 08 26    00 16 59.4 -15 00 55   2.0521  2.9736   150.5     9.6     7.9
2011 08 27    00 16 25.8 -15 07 25   2.0465  2.9733   151.4     9.4     7.9
2011 08 28    00 15 51.0 -15 13 55   2.0411  2.9731   152.3     9.1     7.9
2011 08 29    00 15 15.1 -15 20 25   2.0360  2.9729   153.2     8.8     7.9
2011 08 30    00 14 38.1 -15 26 55   2.0312  2.9726   154.1     8.5     7.9
2011 08 31    00 14 00.1 -15 33 24   2.0265  2.9724   155.0     8.3     7.8
2011 09 01    00 13 21.0 -15 39 51   2.0222  2.9721   155.9     8.0     7.8
2011 09 02    00 12 41.0 -15 46 17   2.0181  2.9719   156.7     7.7     7.8
2011 09 03    00 12 00.0 -15 52 40   2.0142  2.9717   157.5     7.5     7.8
2011 09 04    00 11 18.1 -15 59 01   2.0106  2.9714   158.3     7.2     7.8
2011 09 05    00 10 35.3 -16 05 19   2.0073  2.9711   159.1     7.0     7.8
2011 09 06    00 09 51.7 -16 11 33   2.0042  2.9709   159.8     6.7     7.7
2011 09 07    00 09 07.3 -16 17 43   2.0014  2.9706   160.5     6.5     7.7
2011 09 08    00 08 22.2 -16 23 50   1.9989  2.9704   161.1     6.3     7.7
2011 09 09    00 07 36.4 -16 29 51   1.9966  2.9701   161.7     6.1     7.7
2011 09 10    00 06 49.9 -16 35 47   1.9946  2.9698   162.3     5.9     7.7
2011 09 11    00 06 02.8 -16 41 38   1.9929  2.9696   162.8     5.8     7.7
2011 09 12    00 05 15.2 -16 47 23   1.9914  2.9693   163.2     5.6     7.7
2011 09 13    00 04 27.0 -16 53 02   1.9903  2.9690   163.5     5.5     7.7
2011 09 14    00 03 38.4 -16 58 34   1.9893  2.9687   163.8     5.4     7.7
2011 09 15    00 02 49.3 -17 03 59   1.9887  2.9685   164.0     5.4     7.7
2011 09 16    00 01 59.9 -17 09 17   1.9883  2.9682   164.1     5.3     7.6
2011 09 17    00 01 10.1 -17 14 27   1.9883  2.9679   164.1     5.3     7.6
2011 09 18    00 00 20.1 -17 19 29   1.9885  2.9676   164.0     5.3     7.6
2011 09 19    23 59 29.9 -17 24 22   1.9889  2.9673   163.9     5.4     7.7
2011 09 20    23 58 39.5 -17 29 07   1.9897  2.9670   163.7     5.5     7.7
2011 09 21    23 57 49.0 -17 33 43   1.9907  2.9667   163.3     5.6     7.7
2011 09 22    23 56 58.4 -17 38 09   1.9920  2.9664   163.0     5.7     7.7
2011 09 23    23 56 07.9 -17 42 26   1.9935  2.9661   162.5     5.8     7.7
2011 09 24    23 55 17.4 -17 46 32   1.9954  2.9658   162.0     6.0     7.7
2011 09 25    23 54 27.0 -17 50 29   1.9975  2.9655   161.4     6.2     7.7
2011 09 26    23 53 36.8 -17 54 15   1.9999  2.9652   160.8     6.4     7.7
2011 09 27    23 52 46.7 -17 57 50   2.0026 2.9649   160.1     6.6     7.7
2011 09 28    23 51 57.0 -18 01 14   2.0055  2.9646   159.4     6.8     7.7
2011 09 29    23 51 07.6 -18 04 26   2.0087  2.9643   158.6     7.1     7.8
2011 09 30    23 50 18.6 -18 07 28   2.0122  2.9640   157.8     7.3     7.8
2011 10 01    23 49 30.1 -18 10 17   2.0159  2.9637   157.0     7.6     7.8
2011 10 02    23 48 42.0 -18 12 55   2.0199  2.9633   156.2     7.8     7.8
2011 10 03    23 47 54.6 -18 15 21   2.0242  2.9630   155.3     8.1     7.8
2011 10 04    23 47 07.7 -18 17 35   2.0287  2.9627   154.4     8.4     7.8
2011 10 05    23 46 21.4 -18 19 36   2.0334  2.9624   153.5     8.7     7.9
2011 10 06    23 45 35.9 -18 21 26   2.0385  2.9620   152.6     8.9     7.9
2011 10 07    23 44 51.0 -18 23 03   2.0437  2.9617   151.6     9.2     7.9
2011 10 08    23 44 07.0 -18 24 28   2.0493  2.9614   150.7     9.5     7.9
2011 10 09    23 43 23.8 -18 25 41   2.0550  2.9610   149.7     9.8     7.9
2011 10 10    23 42 41.5 -18 26 41   2.0610  2.9607   148.8    10.1     7.9
2011 10 11    23 42 00.0 -18 27 29   2.0673  2.9604   147.8    10.4     8.0
2011 10 12    23 41 19.5 -18 28 05   2.0737  2.9600   146.8    10.6     8.0
2011 10 13    23 40 39.9 -18 28 29   2.0804  2.9597   145.8    10.9     8.0
2011 10 14    23 40 01.4 -18 28 40   2.0873  2.9593   144.8    11.2     8.0
2011 10 15    23 39 23.9 -18 28 39   2.0945  2.9590   143.9    11.5     8.0
2011 10 16    23 38 47.5 -18 28 26   2.1019  2.9586   142.9    11.7     8.1
2011 10 17    23 38 12.1 -18 28 00   2.1095  2.9582   141.9    12.0     8.1
2011 10 18    23 37 37.9 -18 27 23   2.1172  2.9579   140.9    12.3     8.1
2011 10 19    23 37 04.8 -18 26 33   2.1253  2.9575   139.9    12.5     8.1
2011 10 20    23 36 32.9 -18 25 32   2.1335  2.9572   138.9    12.8     8.1
2011 10 21    23 36 02.3 -18 24 19   2.1419  2.9568   137.9    13.1     8.1
2011 10 22    23 35 32.8 -18 22 54   2.1505  2.9564   136.9    13.3     8.2
2011 10 23    23 35 04.6 -18 21 17   2.1593  2.9561   135.9    13.6     8.2
2011 10 24    23 34 37.7 -18 19 29   2.1683  2.9557   134.9    13.8     8.2
2011 10 25    23 34 12.0 -18 17 29   2.1775  2.9553   133.9    14.0     8.2
2011 10 26    23 33 47.7 -18 15 18   2.1869  2.9549   132.9    14.3     8.2
2011 10 27    23 33 24.7 -18 12 56   2.1964  2.9545   131.9    14.5     8.2
2011 10 28    23 33 03.0 -18 10 23   2.2062  2.9542   130.9    14.7     8.3
2011 10 29    23 32 42.7 -18 07 39   2.2161  2.9538   129.9    14.9     8.3
2011 10 30    23 32 23.7 -18 04 44   2.2261  2.9534   129.0    15.2     8.3
2011 10 31    23 32 06.2 -18 01 38   2.2364  2.9530   128.0    15.4     8.3
2011 11 01    23 31 50.0 -17 58 22   2.2468  2.9526   127.0    15.6     8.3
2011 11 02    23 31 35.2 -17 54 56   2.2573  2.9522   126.0    15.8     8.4
2011 11 03    23 31 21.7 -17 51 20   2.2680  2.9518   125.1    16.0     8.4
2011 11 04    23 31 09.7 -17 47 33   2.2788  2.9514   124.1    16.2     8.4
2011 11 05    23 30 59.1 -17 43 37   2.2898  2.9510   123.1    16.3     8.4
2011 11 06    23 30 49.8 -17 39 32   2.3009  2.9506   122.2    16.5     8.4
2011 11 07    23 30 42.0 -17 35 17   2.3121  2.9502   121.2    16.7     8.4
2011 11 08    23 30 35.5 -17 30 53   2.3234  2.9498   120.3    16.9     8.5
2011 11 09    23 30 30.4 -17 26 20   2.3349  2.9494   119.3    17.0     8.5
2011 11 10    23 30 26.7 -17 21 38   2.3465  2.9490   118.4    17.2     8.5
2011 11 11    23 30 24.3 -17 16 48   2.3582  2.9486   117.4    17.3     8.5
2011 11 12    23 30 23.3 -17 11 49   2.3701  2.9481   116.5    17.5     8.5
2011 11 13    23 30 23.7 -17 06 41   2.3820  2.9477   115.6    17.6     8.5
2011 11 14    23 30 25.4 -17 01 26   2.3940  2.9473   114.7    17.8     8.5
2011 11 15    23 30 28.5 -16 56 02   2.4061  2.9469   113.7    17.9     8.6
2011 11 16    23 30 32.9 -16 50 31   2.4184  2.9465   112.8    18.0     8.6
2011 11 17    23 30 38.6 -16 44 52   2.4307  2.9460   111.9    18.1     8.6
2011 11 18    23 30 45.7 -16 39 05   2.4431  2.9456   111.0    18.3     8.6
2011 11 19    23 30 54.0 -16 33 10   2.4556  2.9452   110.1    18.4     8.6
2011 11 20    23 31 03.7 -16 27 09   2.4682  2.9447   109.2    18.5     8.6
2011 11 21    23 31 14.6 -16 21 00   2.4808  2.9443   108.3    18.6     8.6
2011 11 22    23 31 26.9 -16 14 44   2.4936  2.9438   107.4    18.7     8.7
2011 11 23    23 31 40.4 -16 08 21   2.5064  2.9434   106.5    18.8     8.7
2011 11 24    23 31 55.2 -16 01 52   2.5192  2.9430   105.6    18.9     8.7
2011 11 25    23 32 11.2 -15 55 16   2.5321  2.9425   104.7    18.9     8.7
2011 11 26    23 32 28.5 -15 48 33   2.5451  2.9421   103.9    19.0     8.7
2011 11 27    23 32 47.0 -15 41 44   2.5582  2.9416   103.0    19.1     8.7
2011 11 28    23 33 06.7 -15 34 49   2.5713  2.9412   102.1    19.1     8.7
2011 11 29    23 33 27.6 -15 27 47   2.5844  2.9407   101.3    19.2     8.8
2011 11 30    23 33 49.7 -15 20 40   2.5976  2.9402   100.4    19.3     8.8
2011 12 01    23 34 13.0 -15 13 27   2.6108  2.9398    99.5    19.3     8.8
2011 12 02    23 34 37.4 -15 06 08   2.6241  2.9393    98.7    19.4     8.8
2011 12 03    23 35 03.0 -14 58 44   2.6373  2.9389    97.8    19.4     8.8
2011 12 04    23 35 29.7 -14 51 15   2.6507  2.9384    97.0    19.4     8.8
2011 12 05    23 35 57.5 -14 43 40   2.6640  2.9379    96.2    19.5     8.8
2011 12 06    23 36 26.3 -14 36 00   2.6774  2.9375    95.3    19.5     8.8
2011 12 07    23 36 56.3 -14 28 15   2.6908  2.9370    94.5    19.5     8.9
2011 12 08    23 37 27.3 -14 20 26   2.7042  2.9365    93.7    19.6     8.9
2011 12 09    23 37 59.4 -14 12 31   2.7176  2.9360    92.8    19.6     8.9
2011 12 10    23 38 32.5 -14 04 32   2.7310  2.9355    92.0    19.6     8.9
2011 12 11    23 39 06.6 -13 56 28   2.7444  2.9351    91.2    19.6     8.9
2011 12 12    23 39 41.7 -13 48 20   2.7579  2.9346    90.4    19.6     8.9





__________________
«First  <  1 2 3 4 5 6 7  >  Last»  | Page of 7  sorted by
Quick Reply

Please log in to post quick replies.
Home -> Astronomy News -> Solar System -> Ceres


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard