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187957 (2001 OA57)
Classification: Main-belt Asteroid          SPK-ID: 2187957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082126227157788 3.9876e-08  
a 2.374675167650449 9.5253e-09 au
q 1.880237822895917 9.8282e-08 au
i 3.556041352940036 4.4351e-06 deg
node 116.0468933461957 7.7868e-05 deg
peri 210.1872928290923 7.8914e-05 deg
M 98.69790724070634 1.4517e-05 deg
tp 2458834.053830436517
(2019-Dec-16.55383044)
5.2807e-05 TDB
period 1336.610113942167
3.66
8.0421e-06
2.202e-08
d
yr
n .269338078654982 1.6206e-09 deg/d
Q 2.869112512404981 1.1509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      7126 days (19.51 yr)  
   first obs. used      2001-07-16  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60518  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:30  

Additional Information
 Earth MOID = .867464 au 
 Jupiter MOID = 2.47 au 
 T_jup = 3.510 
[ 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 16.5   n/a MPO436930  

187957 (2001 OA57)          Discovered 2001-Jul-16 by LONEOS at Anderson Mesa
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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