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181889 (1999 RQ92)
Classification: Main-belt Asteroid          SPK-ID: 2181889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2290781634182041 5.2621e-08  
a 2.225493515237296 6.7287e-09 au
q 1.715681548067613 1.1557e-07 au
i 7.507637891105507 5.6164e-06 deg
node 1.503368284423363 2.6217e-05 deg
peri 330.6996297705238 2.8604e-05 deg
M 161.1242606829506 1.3527e-05 deg
tp 2458657.754334900694
(2019-Jun-23.25433490)
4.4474e-05 TDB
period 1212.656856314285
3.32
5.4996e-06
1.506e-08
d
yr
n .2968688117545255 1.3464e-09 deg/d
Q 2.735305482406979 8.2701e-09 au
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      7937 days (21.73 yr)  
   first obs. used      1999-07-16  
   last obs. used      2021-04-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48825  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:09:53  

Additional Information
 Earth MOID = .708624 au 
 Jupiter MOID = 2.64887 au 
 T_jup = 3.600 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.29   n/a MPCxxxxx  

181889 (1999 RQ92)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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