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85176 (1990 RP2)
Classification: Main-belt Asteroid          SPK-ID: 2085176
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1878499112645285 2.8058e-08  
a 2.289801779682815 6.4245e-09 au
q 1.859662718556038 6.5988e-08 au
i 2.802185995158807 3.2367e-06 deg
node 242.0987841537827 7.0028e-05 deg
peri 116.746519320318 7.0775e-05 deg
M 317.5043257901689 9.7312e-06 deg
tp 2459545.895488552294
(2021-Nov-27.39548855)
3.4364e-05 TDB
period 1265.596484321306
3.47
5.3263e-06
1.458e-08
d
yr
n .2844508533800607 1.1971e-09 deg/d
Q 2.719940840809591 7.6314e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      11286 days (30.90 yr)  
   first obs. used      1990-09-15  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48384  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 01:53:45  

Additional Information
 Earth MOID = .857349 au 
 Jupiter MOID = 2.7408 au 
 T_jup = 3.574 
[ 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 15.86   n/a MPO637170  

85176 (1990 RP2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1990 RP2 = 2001 XW190 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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