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212933 (2008 DQ8)
Classification: Main-belt Asteroid          SPK-ID: 2212933
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234005075203445 5.5066e-08  
a 3.155872880927391 3.1636e-08 au
q 2.766436565751259 1.8526e-07 au
i 1.993043340993396 6.0213e-06 deg
node 59.0422057852445 0.000168 deg
peri 196.1996687321404 0.00016983 deg
M 316.4053633886655 2.4475e-05 deg
tp 2459248.475194832442
(2021-Feb-02.97519483)
0.00013969 TDB
period 2047.753510037723
5.61
3.0792e-05
8.43e-08
d
yr
n .1758024089497804 2.6435e-09 deg/d
Q 3.545309196103522 3.554e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      10247 days (28.05 yr)  
   first obs. used      1992-04-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 08:51:18  

Additional Information
 Earth MOID = 1.75172 au 
 Jupiter MOID = 1.50044 au 
 T_jup = 3.194 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO470284  
rotation period rot_per 11.57 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

212933 (2008 DQ8)          Discovered 2008-Feb-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2008 DQ8 = 2005 RR42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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