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91377 (1999 JR103)
Classification: Main-belt Asteroid          SPK-ID: 2091377
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05074856411128999 2.7814e-08  
a 2.40978675531251 1.0022e-08 au
q 2.287493537665995 6.4939e-08 au
i 8.321444258597408 3.7894e-06 deg
node 183.7549482219792 2.1146e-05 deg
peri 129.7159379009428 4.862e-05 deg
M 252.3258653611834 4.5856e-05 deg
tp 2459805.172331788048
(2022-Aug-13.67233179)
0.00017489 TDB
period 1366.363796999207
3.74
8.5238e-06
2.334e-08
d
yr
n .2634730229171968 1.6436e-09 deg/d
Q 2.532079972959024 1.0531e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      11040 days (30.23 yr)  
   first obs. used      1991-03-17  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:25  

Additional Information
 Earth MOID = 1.28386 au 
 Jupiter MOID = 2.58936 au 
 T_jup = 3.504 
[ 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 15.66   n/a MPO637242  
diameter diameter 2.345 km 0.522 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91377 (1999 JR103)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 JR103 = 2000 SY83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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