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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1912667697554971 4.3336e-08  
a 2.210269638681781 9.9281e-09 au
q 1.787518504602467 9.4346e-08 au
i 5.287884641969732 4.3009e-06 deg
node 71.99282778093416 6.0995e-05 deg
peri 214.4678425229725 6.2973e-05 deg
M 84.47736456074442 1.9297e-05 deg
tp 2458318.853622413118
(2018-Jul-19.35362241)
6.3324e-05 TDB
period 1200.235074312362
3.29
8.0868e-06
2.214e-08
d
yr
n .2999412429321408 2.0209e-09 deg/d
Q 2.633020772761095 1.1827e-08 au
  Orbit Determination Parameters
   # obs. used (total)      541  
   data-arc span      7928 days (21.71 yr)  
   first obs. used      1998-03-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:24:34  

Additional Information
 Earth MOID = .773528 au 
 Jupiter MOID = 2.52478 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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