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Post Info TOPIC: Comet 212P/2000 YN 30 (NEAT)
Blobrana


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Comet 212P/NEAT
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Comet 212P/NEAT is at Opposition (2.535 AU) in the constellation Sculptor on the 20th September 2015.

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 09 19    00 50 49.0 -28 05 10   2.5411  3.4426   149.2     8.6
2015 09 20    00 50 04.5 -28 12 41   2.5351  3.4370   149.3     8.6
2015 09 21    00 49 19.1 -28 20 02   2.5294  3.4314   149.3     8.6
2015 09 22    00 48 33.0 -28 27 14   2.5240  3.4257   149.3     8.6
2015 09 23    00 47 46.2 -28 34 16   2.5189  3.4201   149.3     8.6
2015 09 24    00 46 58.7 -28 41 07   2.5140  3.4145   149.2     8.7
2015 09 25    00 46 10.7 -28 47 49   2.5093  3.4088   149.0     8.7
2015 09 26    00 45 22.0 -28 54 19   2.5050  3.4032   148.9     8.8
2015 09 27    00 44 32.8 -29 00 37   2.5008  3.3975   148.7     8.8
2015 09 28    00 43 43.0 -29 06 44   2.4970  3.3919   148.5     8.9
2015 09 29    00 42 52.8 -29 12 39   2.4934  3.3862   148.2     9.0
2015 09 30    00 42 02.2 -29 18 22   2.4900  3.3805   147.9     9.1


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Blobrana


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RE: Comet 212P/2000 YN 30 (NEAT)
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Comet 212P/NEAT is at Opposition (4.220 AU) on the 15th August 2014

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2014 08 14    22 10 06.5 -32 19 44   4.2233  5.1884   160.3     3.8        24.1
2014 08 15    22 09 26.8 -32 24 39   4.2201  5.1852   160.4     3.8        24.1
2014 08 16    22 08 46.7 -32 29 29   4.2172  5.1820   160.3     3.8        24.1
2014 08 17    22 08 06.4 -32 34 15   4.2145  5.1788   160.3     3.8        24.0
2014 08 18    22 07 25.9 -32 38 56   4.2122  5.1757   160.1     3.8        24.0
2014 08 19    22 06 45.1 -32 43 31   4.2102  5.1725   159.9     3.9        24.0
2014 08 20    22 06 04.2 -32 48 01   4.2084  5.1693   159.7     3.9        24.0


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Blobrana


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Date:
Comet 212P/NEAT
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Title: Detection of Coma Activity of the ACO/Quasi-Hilda Object, 212P/2000YN30
Authors: Y.-C. Cheng, W.-H. Ip

The quasi-Hilda object, 212P/2000YN30 with a cometary-like orbit, was found to display a dust tail structure between January and March, 2009. From orbital calculations, it is shown that this object could have been an active comet in its past history before being transported to the current orbital configuration in quasi-stable 3:2 resonance with Jupiter.

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Blobrana


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Date:
Comet 212P/2000 YN 30 (NEAT)
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An apparent asteroidal object discovered  by the NEAT survey (the discovery observation tabulated below was originally assigned the designation 2000 YN 30 and published on MPO 24160) was recovered a few months ago with the 0.9-m Spacewatch reflector at Kitt Peak (recovery observation also tabulated below; cf. MPEC 2008-V41 and MPO 263011) but only recently noted to show cometary activity.  
A. R. Gibbs reports that four co-added 60-s unfiltered CCD exposures taken on 2009 Jan. 2.53 with the Catalina 0.68-m Schmidt telescope show a compact coma 7" across with a narrow 35" tail in p.a. 285 deg.  Y. C. Cheng and H. Y. Hsiao, Institute of Astronomy, National Central University, Jhongli, Taiwan, report that three 300-s R-band images obtained on Jan. 2.8 with the Lulin 1-m telescope show total mag 18.2-18.4 and a tail < 20" long in p.a. 290 deg.  J. V. Scotti writes that fifteen co-added exposures with the Spacewatch 1.8-m reflector on Jan. 7.4 show an 8" coma and a narrow tail extending at least 2'.2 in p.a. 283 deg; the tail's width expands with distance from the nuclear condensation from about 8" to 12" as it fades.

Date      UT             R.A. (2000) Decl.       Mag.   Observer
2000 Dec. 26.46926    4 19 20.45   + 6 03 33.1   20.4   NEAT
2008 Oct. 30.48499    8 50 58.52   +15 37 57.6   20.5   Spacewatch

The following orbital elements by B. G. Marsden, Smithsonian Astrophysical Observatory, from 69 observations, 2000-2009 (mean residual 0".6), appear on MPC 64768 (with new observations on MPC 64748-64749).  The permanent designation 212P has been assigned to this comet. 
                   Epoch = 2008 Nov. 30.0 TT 
    T = 2008 Dec.  3.2698 TT         Peri. =  15.0488 
    e = 0.578876                     Node  =  98.9290  2000.0 
    q = 1.654465 AU                  Incl. =  22.3979 
    a =  3.928686 AU    n = 0.1265707    P =   7.79 years
Source (Subscription)

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