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101940 (1999 RW23)
Classification: Main-belt Asteroid          SPK-ID: 2101940
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .233073625654372 5.7913e-08  
a 2.295743775228045 4.8983e-09 au
q 1.760666449962189 1.3161e-07 au
i 6.001830304242178 4.8711e-06 deg
node 21.13613566461663 2.4612e-05 deg
peri 339.7515265813681 2.5624e-05 deg
M 36.40039541872615 7.2584e-06 deg
tp 2459072.034310944724
(2020-Aug-10.53431094)
2.5444e-05 TDB
period 1270.525979948761
3.48
4.0663e-06
1.113e-08
d
yr
n .2833472165712962 9.0684e-10 deg/d
Q 2.830821100493901 6.04e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1122  
   data-arc span      7831 days (21.44 yr)  
   first obs. used      1999-09-05  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45199  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:39:31  

Additional Information
 Earth MOID = .757888 au 
 Jupiter MOID = 2.62543 au 
 T_jup = 3.551 
[ 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 16.08   n/a E2021B55  

101940 (1999 RW23)          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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