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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06814182177334201 3.3642e-08  
a 2.992554107888697 1.8201e-08 au
q 2.788636019221863 1.0531e-07 au
i 10.10317979731513 4.5793e-06 deg
node 330.1964294789482 2.0591e-05 deg
peri 80.78975981546982 4.4259e-05 deg
M 19.51472389420243 3.6475e-05 deg
tp 2459294.000592618978
(2021-Mar-20.50059262)
0.00019183 TDB
period 1890.869010354289
5.18
1.7251e-05
4.723e-08
d
yr
n .1903886509476123 1.7369e-09 deg/d
Q 3.196472196555531 1.9441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1463  
   data-arc span      8018 days (21.95 yr)  
   first obs. used      1999-08-22  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:27  

Additional Information
 Earth MOID = 1.82041 au 
 Jupiter MOID = 2.06275 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 14.09   n/a MPO637244  
rotation period rot_per 6.512 h n/a LCDB (Rev. 2020-October); 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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