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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05061862340060412 3.0567e-08  
a 2.410234754863247 1.1416e-08 au
q 2.288231989499777 6.9721e-08 au
i 8.319926176641941 3.9143e-06 deg
node 183.7629362740711 2.3668e-05 deg
peri 129.4146280084939 5.0904e-05 deg
M 148.3231511904984 4.6395e-05 deg
tp 2458437.389161383052
(2018-Nov-14.88916138)
0.0001754 TDB
period 1366.74484242678
3.74
9.7107e-06
2.659e-08
d
yr
n .2633995672233795 1.8715e-09 deg/d
Q 2.532237520226718 1.1994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      966  
   data-arc span      10543 days (28.87 yr)  
   first obs. used      1991-03-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:28:52  

Additional Information
 Earth MOID = 1.28531 au 
 Jupiter MOID = 2.59051 au 
 T_jup = 3.504 
[ 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 15.6   n/a MPO449561  
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

[ show close-approach data ]
Alternate Designations
 1999 JR103 = 2000 SY83 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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