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100631 (1997 UH8)
Classification: Main-belt Asteroid          SPK-ID: 2100631
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 .2273469256091366 6.1292e-08  
a 2.899695571668461 2.3295e-08 au
q 2.240458698247209 1.7959e-07 au
i 1.72561882187795 7.1122e-06 deg
node 236.9539868493202 0.00017188 deg
peri 82.43713437249579 0.00017357 deg
M 253.8073719311172 3.0036e-05 deg
tp 2459532.508906495710
(2021-Nov-14.00890650)
0.00015348 TDB
period 1803.545216097509
4.94
2.1733e-05
5.95e-08
d
yr
n .1996068614120826 2.4053e-09 deg/d
Q 3.558932445089714 2.8591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      10067 days (27.56 yr)  
   first obs. used      1992-10-23  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:05:06  

Additional Information
 Earth MOID = 1.22828 au 
 Jupiter MOID = 1.77202 au 
 T_jup = 3.248 
[ 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 15.6   n/a MPO257473  

100631 (1997 UH8)          Discovered 1997-Oct-29 by Comba, P. G. at Prescott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 UH8 = 2002 TU45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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