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85485 (1997 RJ2)
Classification: Main-belt Asteroid          SPK-ID: 2085485
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1719701864714704 3.5956e-08  
a 2.374317356516757 6.9098e-09 au
q 1.966005557974121 8.5216e-08 au
i 2.630198919448229 3.9462e-06 deg
node 167.6566711985076 7.4844e-05 deg
peri 229.7705810500947 7.543e-05 deg
M 169.1162448093356 9.4189e-06 deg
tp 2458768.746122919029
(2019-Oct-12.24612292)
3.4445e-05 TDB
period 1336.308028858706
3.66
5.8334e-06
1.597e-08
d
yr
n .2693989650780318 1.176e-09 deg/d
Q 2.782629155059392 8.098e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      10134 days (27.75 yr)  
   first obs. used      1993-08-17  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5045  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:26:15  

Additional Information
 Earth MOID = .973762 au 
 Jupiter MOID = 2.63619 au 
 T_jup = 3.521 
[ 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 16.00   n/a MPO637173  
diameter diameter 4.483 km 0.237 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85485 (1997 RJ2)          Discovered 1997-Sep-04 by ODAS at Caussols
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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