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JPL Small-Body Database Browser
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91387 (1999 JP129)
Classification: Main-belt Asteroid          SPK-ID: 2091387
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509735695556361 4.3592e-08  
a 2.653796389341726 1.4543e-08 au
q 2.253143275568947 1.1577e-07 au
i 11.49146057342143 6.6653e-06 deg
node 186.632984548528 1.9235e-05 deg
peri 59.44592074589117 2.8863e-05 deg
M 306.4414248362369 2.1158e-05 deg
tp 2459235.423433292446
(2021-Jan-20.92343329)
9.3409e-05 TDB
period 1579.064337068115
4.32
1.298e-05
3.554e-08
d
yr
n .2279831109785053 1.8741e-09 deg/d
Q 3.054449503114505 1.6739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      783  
   data-arc span      7215 days (19.75 yr)  
   first obs. used      1999-05-12  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58322  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:54:20  

Additional Information
 Earth MOID = 1.266 au 
 Jupiter MOID = 2.00862 au 
 T_jup = 3.344 
[ 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 15.0   n/a MPO426568  
diameter diameter 5.815 km 0.244 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91387 (1999 JP129)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 JP129 = 2000 SL68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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