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JPL Small-Body Database Browser
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59921 (1999 RM163)
Classification: Main-belt Asteroid          SPK-ID: 2059921
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1335235365755164 5.6469e-08  
a 3.016233804753714 2.5525e-08 au
q 2.613495600004373 1.6934e-07 au
i 3.106519397337772 6.2073e-06 deg
node 255.1497300500556 0.00012429 deg
peri 67.08070642221482 0.00012694 deg
M 3.996154311264854 2.6936e-05 deg
tp 2458979.260920976024
(2020-May-09.76092098)
0.00014306 TDB
period 1913.356655692119
5.24
2.4288e-05
6.65e-08
d
yr
n .1881510166591378 2.3884e-09 deg/d
Q 3.418972009503056 2.8933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      7618 days (20.86 yr)  
   first obs. used      1998-06-25  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58284  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:16:08  

Additional Information
 Earth MOID = 1.60295 au 
 Jupiter MOID = 1.89038 au 
 T_jup = 3.232 
[ 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 MPO347919  
rotation period rot_per 2.82 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

59921 (1999 RM163)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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