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71214 (1999 XG261)
Classification: Outer Main-belt Asteroid          SPK-ID: 2071214
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164151100017601 7.9619e-08  
a 3.233703578837319 3.637e-08 au
q 2.857251620993887 2.555e-07 au
i 18.90272191878415 8.3159e-06 deg
node 344.6251384079957 1.5348e-05 deg
peri 155.3176898829591 2.8034e-05 deg
M 158.1479348922338 2.4558e-05 deg
tp 2458067.439590669744
(2017-Nov-09.93959067)
0.00013948 TDB
period 2123.97175839055
5.82
3.5833e-05
9.811e-08
d
yr
n .1694937790852698 2.8595e-09 deg/d
Q 3.61015553668075 4.0604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      7164 days (19.61 yr)  
   first obs. used      1998-10-30  
   last obs. used      2018-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57321  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:16:03  

Additional Information
 Earth MOID = 1.87808 au 
 Jupiter MOID = 1.40922 au 
 T_jup = 3.091 
[ 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 14.1   n/a MPO347978  

71214 (1999 XG261)          Discovered 1999-Dec-03 by LONEOS at Anderson Mesa
Reference: 20031109/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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