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JPL Small-Body Database Browser
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49396 (1998 XG40)
Classification: Main-belt Asteroid          SPK-ID: 2049396
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08168582077011952 3.2701e-08  
a 2.472287060755932 1.1862e-08 au
q 2.270336263018738 8.1946e-08 au
i 10.03744811201067 5.1838e-06 deg
node 47.1826932961357 3.2592e-05 deg
peri 41.6852123525961 6.1527e-05 deg
M 83.57001407125408 4.9724e-05 deg
tp 2458270.894275926369
(2018-Jun-01.39427593)
0.0001969 TDB
period 1419.864074275924
3.89
1.0219e-05
2.798e-08
d
yr
n .2535453967194614 1.8247e-09 deg/d
Q 2.674237858493127 1.2831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1439  
   data-arc span      7474 days (20.46 yr)  
   first obs. used      1998-11-22  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52823  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:40:46  

Additional Information
 Earth MOID = 1.29571 au 
 Jupiter MOID = 2.51833 au 
 T_jup = 3.458 
[ 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 14.2   n/a MPO436129  

49396 (1998 XG40)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XG40 = 2000 HK9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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