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91339 (1999 JR15)
Classification: Main-belt Asteroid          SPK-ID: 2091339
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1127919800587695 5.3517e-08  
a 2.571739417719942 1.1171e-08 au
q 2.281667836600123 1.413e-07 au
i 18.00848830805531 5.0224e-06 deg
node 41.55091203436976 1.3902e-05 deg
peri 107.6723522983311 2.7722e-05 deg
M 108.8521903570874 2.1306e-05 deg
tp 2458545.015564904627
(2019-Mar-02.51556490)
8.9618e-05 TDB
period 1506.395012322853
4.12
9.8152e-06
2.687e-08
d
yr
n .238981141768972 1.5571e-09 deg/d
Q 2.861810998839761 1.2431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1753  
   data-arc span      7751 days (21.22 yr)  
   first obs. used      1999-03-29  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47602  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:15  

Additional Information
 Earth MOID = 1.35355 au 
 Jupiter MOID = 2.23907 au 
 T_jup = 3.352 
[ 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 13.9   n/a MPO385378  
diameter diameter 6.406 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 101.919 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.133   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91339 (1999 JR15)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 JR15 = 2001 TR36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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