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117873 (2212 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2117873
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1642195252817933 5.8673e-08  
a 2.220771093158172 9.2032e-09 au
q 1.856077118480208 1.3212e-07 au
i 3.089906172710886 7.3021e-06 deg
node 193.8936415833025 9.4697e-05 deg
peri 208.2324200644135 9.7454e-05 deg
M 347.0609748712393 2.5393e-05 deg
tp 2459043.946337951961
(2020-Jul-13.44633795)
8.5436e-05 TDB
period 1208.799079301586
3.31
7.5141e-06
2.057e-08
d
yr
n .297816242719178 1.8513e-09 deg/d
Q 2.585465067836136 1.0714e-08 au
  Orbit Determination Parameters
   # obs. used (total)      358  
   data-arc span      20998 days (57.49 yr)  
   first obs. used      1960-09-24  
   last obs. used      2018-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53779  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:34:42  

Additional Information
 Earth MOID = .865091 au 
 Jupiter MOID = 2.80727 au 
 T_jup = 3.630 
[ 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 16.8   n/a MPO436566  
rotation period rot_per 5.718 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

117873 (2212 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2212 P-L = 1990 WQ10 = 2000 YZ72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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