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91157 (1998 QG62)
Classification: Main-belt Asteroid          SPK-ID: 2091157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06029203306198243 4.0636e-08  
a 3.058325653379134 1.9174e-08 au
q 2.87393298197129 1.3372e-07 au
i 9.914695969732762 4.6388e-06 deg
node 297.7587271262184 2.4465e-05 deg
peri 150.1657610292172 4.964e-05 deg
M 350.7218990250839 4.2685e-05 deg
tp 2459446.847813202408
(2021-Aug-20.34781320)
0.00023168 TDB
period 1953.547692773509
5.35
1.8371e-05
5.03e-08
d
yr
n .1842801183363471 1.733e-09 deg/d
Q 3.242718324786978 2.033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1081  
   data-arc span      8250 days (22.59 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50195  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:50  

Additional Information
 Earth MOID = 1.89529 au 
 Jupiter MOID = 1.90075 au 
 T_jup = 3.209 
[ 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 14.38   n/a MPCxxxxx  

91157 (1998 QG62)          Discovered 1998-Aug-26 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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