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Post Info TOPIC: Asteroid 2009 DA1
Blobrana


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RE: Asteroid 2009 DA1
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Orbital Elements at Epoch 2454884.5 (2009-Feb-22.0) TDB

Reference: JPL 4 (heliocentric ecliptic J2000)

Element Value Uncertainty (1-sigma) Units
e .7015748080775298 0.0082578
a 2.546455012716472 0.063784 AU
q .7599263258918495 0.0019937 AU
i 5.860107118799023 0.074029 deg
node 156.4277400033911 0.0031282 deg
peri 272.6845925214153 0.042776 deg
M 15.20905405484323 0.60285 deg
tp 2454821.795004412328
(2008-Dec-21.29500442)		 0.13005 JED
period 1484.234215366829
4.06		 55.766
0.1527		 d
yr
n .2425493202304502 0.0091131 deg/d
Q 4.332983699541095 0.10853 AU


 Orbit Determination Parameters
# obs. used (total) 42
data-arc span 5 days
first obs. used 2009-02-19
last obs. used 2009-02-24
planetary ephem. DE405
SB-pert. ephem. SB405-CPV-2
quality code 8
fit RMS .38584
data source ORB
producer Otto Matic
solution date 2009-Feb-25 00:50:15




Additional Information
Earth MOID = .0398939 AU
T_jup = 3.035



Source

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Blobrana


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Posts: 131433
Date:
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Asteroid 2009 DA1 = 92IC237 (NEOCPO)
Orbital elements:
2009 DA1                                                 Earth MOID = 0.0399 AU
Epoch 2009 Feb. 18.0 TT = JDT 2454880.5                 MPC
M  14.45779              (2000.0)            P               Q
n   0.24590055     Peri.  272.67953     +0.35459990     -0.93412832
a   2.5232661      Node   156.42389     +0.89327213     +0.32555830
e   0.6985115      Incl.    5.85228     +0.27626765     +0.14634230
P   4.01           H   22.3           G   0.15
From 18 observations 2009 Feb. 19.

MPEC 2009 -D28

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