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49892 (1999 XG159)
Classification: Main-belt Asteroid          SPK-ID: 2049892
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1512290641911059 3.7334e-08  
a 2.286527719742734 9.2635e-09 au
q 1.940738272439017 8.9036e-08 au
i 7.702704024528402 3.8407e-06 deg
node 139.3747535996694 2.73e-05 deg
peri 238.0188454882329 2.9937e-05 deg
M 30.24570938227107 1.2306e-05 deg
tp 2458894.397795571501
(2020-Feb-14.89779557)
4.3107e-05 TDB
period 1262.883046037902
3.46
7.6746e-06
2.101e-08
d
yr
n .2850620262338968 1.7323e-09 deg/d
Q 2.63231716704645 1.0664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1101  
   data-arc span      8660 days (23.71 yr)  
   first obs. used      1997-02-04  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:19  

Additional Information
 Earth MOID = .953804 au 
 Jupiter MOID = 2.85053 au 
 T_jup = 3.574 
[ 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 15.3   n/a MPO302341  
diameter diameter 2.031 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.428   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49892 (1999 XG159)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20021120/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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