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118404 (1999 RC93)
Classification: Main-belt Asteroid          SPK-ID: 2118404
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09273673949910327 4.5405e-08  
a 3.087234870585497 2.2866e-08 au
q 2.800934774619462 1.5071e-07 au
i 9.658715658514668 4.4786e-06 deg
node 165.1462890971326 2.3137e-05 deg
peri 221.7900354046686 3.3869e-05 deg
M 312.7312662305352 2.6649e-05 deg
tp 2459460.650342018597
(2021-Sep-03.15034202)
0.00014782 TDB
period 1981.312289503184
5.42
2.2012e-05
6.027e-08
d
yr
n .1816977575454651 2.0187e-09 deg/d
Q 3.373534966551532 2.4987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      9054 days (24.79 yr)  
   first obs. used      1996-01-21  
   last obs. used      2020-11-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:57:07  

Additional Information
 Earth MOID = 1.8111 au 
 Jupiter MOID = 2.11361 au 
 T_jup = 3.198 
[ 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 14.70   n/a E2021B55  
rotation period rot_per 0.98 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

118404 (1999 RC93)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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