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91522 (1999 RJ185)
Classification: Main-belt Asteroid          SPK-ID: 2091522
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06720395711456173 5.6248e-08  
a 2.609326595340229 1.8312e-08 au
q 2.433969522729099 1.5415e-07 au
i 22.27004744844959 7.0154e-06 deg
node 6.941985133333981 1.1007e-05 deg
peri 110.6582833568855 6.5503e-05 deg
M 209.0508068165817 5.9203e-05 deg
tp 2459646.034389548140
(2022-Mar-07.53438955)
0.00025102 TDB
period 1539.540393269612
4.22
1.6206e-05
4.437e-08
d
yr
n .2338360211747657 2.4615e-09 deg/d
Q 2.784683667951359 1.9542e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1121  
   data-arc span      7639 days (20.91 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49606  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:39  

Additional Information
 Earth MOID = 1.5077 au 
 Jupiter MOID = 2.27824 au 
 T_jup = 3.302 
[ 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 14.1   n/a MPO395814  
diameter diameter 4.033 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.299   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91522 (1999 RJ185)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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