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91511 (1999 RJ163)
Classification: Main-belt Asteroid          SPK-ID: 2091511
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06788808640116584 3.4748e-08  
a 2.992054740639194 2.167e-08 au
q 2.788929869889662 1.0647e-07 au
i 10.10304266524031 5.5045e-06 deg
node 330.1969873949453 2.2374e-05 deg
peri 80.62223601336295 4.737e-05 deg
M 304.248738253647 4.0888e-05 deg
tp 2459293.255409729783
(2021-Mar-19.75540973)
0.00021476 TDB
period 1890.395736373016
5.18
2.0537e-05
5.623e-08
d
yr
n .1904363160968134 2.0689e-09 deg/d
Q 3.195179611388725 2.3142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      986  
   data-arc span      7647 days (20.94 yr)  
   first obs. used      1999-08-22  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:39  

Additional Information
 Earth MOID = 1.82116 au 
 Jupiter MOID = 2.06438 au 
 T_jup = 3.229 
[ 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 14.0   n/a MPO436411  
rotation period rot_per 6.512 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.]

91511 (1999 RJ163)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RJ163 = 1999 TB279 = 2000 XZ31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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