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91510 (1999 RA162)
Classification: Main-belt Asteroid          SPK-ID: 2091510
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2910447774238399 5.6898e-08  
a 2.760545010198635 1.4455e-08 au
q 1.957102802136882 1.5505e-07 au
i 8.593409338339937 6.845e-06 deg
node 180.3286400278439 3.7472e-05 deg
peri 239.7800316953642 3.8777e-05 deg
M 223.8813511232999 1.0546e-05 deg
tp 2460029.940467093416
(2023-Mar-26.44046709)
5.2229e-05 TDB
period 1675.292621808149
4.59
1.3158e-05
3.602e-08
d
yr
n .2148878323187807 1.6878e-09 deg/d
Q 3.563987218260389 1.8661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      11272 days (30.86 yr)  
   first obs. used      1990-09-28  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56478  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:27  

Additional Information
 Earth MOID = .98491 au 
 Jupiter MOID = 1.87644 au 
 T_jup = 3.263 
[ 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 15.92   n/a E2021B10  
diameter diameter 4.473 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91510 (1999 RA162)          Discovered 1999-Sep-09 by LINEAR at Socorro
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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