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JPL Small-Body Database Browser
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35890 (1999 JR81)
Classification: Main-belt Asteroid          SPK-ID: 2035890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1362398243899394 3.1987e-08  
a 2.305397922380343 7.7121e-09 au
q 1.991310914286314 7.4071e-08 au
i 7.672176817450297 3.8658e-06 deg
node 143.3581827994898 2.9437e-05 deg
peri 105.8646457843 3.3234e-05 deg
M 339.1085656809843 1.4987e-05 deg
tp 2459074.696433526604
(2020-Aug-13.19643353)
5.3257e-05 TDB
period 1278.548694249534
3.50
6.4156e-06
1.756e-08
d
yr
n .2815692524024734 1.4129e-09 deg/d
Q 2.619484930474372 8.7628e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1087  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-02-03  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53582  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:09:48  

Additional Information
 Earth MOID = .993625 au 
 Jupiter MOID = 2.43893 au 
 T_jup = 3.564 
[ 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 15.5   n/a MPO365675  
diameter diameter 3.975 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35890 (1999 JR81)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2036-Aug-05 00:23 00:01 David 0.0463158512993115 0.0463138539248637 0.046317848827039 4.72851884115203 4.72851877217123 2464910.515749006 1.36156572929444 169.614415187333 25.3946662036467 54.9735652333354 224508.799586987 T 24 CATAB v2.0f-lin.ifort 2020-May-20 08:10:01 2020-May-20 08:10

Alternate Designations
 1999 JR81 = 2000 SR76 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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