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102921 (1999 XH27)
Classification: Main-belt Asteroid          SPK-ID: 2102921
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05452411665433923 4.5578e-08  
a 2.578450303229818 1.5339e-08 au
q 2.437862578109099 1.167e-07 au
i 15.37261887524891 5.1515e-06 deg
node 66.69457771936139 1.6188e-05 deg
peri 38.97820539452047 4.3202e-05 deg
M 345.5983375443383 3.9869e-05 deg
tp 2459260.998791826289
(2021-Feb-15.49879183)		 0.00016752 TDB
period 1512.29520373198
4.14		 1.3494e-05
3.694e-08		 d
yr
n .2380487613209423 2.1241e-09 deg/d
Q 2.719038028350537 1.6175e-08 au
   Orbit Determination Parameters
   # obs. used (total)      765  
   data-arc span      7772 days (21.28 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .554  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:32:46  

Additional Information
 Earth MOID = 1.46749 au 
 Jupiter MOID = 2.4723 au 
 T_jup = 3.374 
[ 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 MPO449620  

102921 (1999 XH27)          Discovered 1999-Dec-06 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XH27 = 2001 CM43 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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