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49885 (1999 XG146)
Classification: Main-belt Asteroid          SPK-ID: 2049885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912846757828774 4.3326e-08  
a 2.210494131037221 9.9489e-09 au
q 1.787660477861813 9.4296e-08 au
i 5.28735052168517 4.2882e-06 deg
node 71.99127900686477 6.0046e-05 deg
peri 214.5395264374358 6.202e-05 deg
M 204.3465731434751 1.9693e-05 deg
tp 2459519.525459836129
(2021-Nov-01.02545984)
6.7764e-05 TDB
period 1200.417936915945
3.29
8.1042e-06
2.219e-08
d
yr
n .2998955521481912 2.0246e-09 deg/d
Q 2.633327784212629 1.1852e-08 au
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      7975 days (21.83 yr)  
   first obs. used      1998-03-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:36:23  

Additional Information
 Earth MOID = .774282 au 
 Jupiter MOID = 2.52592 au 
 T_jup = 3.628 
[ 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 15.9   n/a MPO452848  

49885 (1999 XG146)          Discovered 1999-Dec-07 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XG146 = 1998 HH63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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