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101923 (1999 RC18)
Classification: Main-belt Asteroid          SPK-ID: 2101923
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210396829774178 3.719e-08  
a 2.420199238322425 7.6707e-09 au
q 1.910996991157506 9.0604e-08 au
i 2.241970799346003 4.8814e-06 deg
node 184.4147435048597 7.6829e-05 deg
peri 211.0477540071408 7.7441e-05 deg
M 200.0537280987007 9.1665e-06 deg
tp 2459811.507762584127
(2022-Aug-20.00776258)
3.6146e-05 TDB
period 1375.229268651049
3.77
6.5381e-06
1.79e-08
d
yr
n .2617745333133587 1.2445e-09 deg/d
Q 2.929401485487343 9.2846e-09 au
  Orbit Determination Parameters
   # obs. used (total)      962  
   data-arc span      7557 days (20.69 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:25  

Additional Information
 Earth MOID = .917071 au 
 Jupiter MOID = 2.50071 au 
 T_jup = 3.482 
[ 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 16.01   n/a E2021B55  

101923 (1999 RC18)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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