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49901 (1999 XK164)
Classification: Main-belt Asteroid          SPK-ID: 2049901
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07304439648353285 3.6862e-08  
a 2.197093066956483 6.6152e-09 au
q 2.036607729862492 8.1171e-08 au
i 6.61031422285265 3.6644e-06 deg
node 88.44721374856556 3.1223e-05 deg
peri 286.1389890586673 3.8838e-05 deg
M 187.0801653656927 2.3297e-05 deg
tp 2459571.864716812440
(2021-Dec-23.36471681)
7.7391e-05 TDB
period 1189.518244031846
3.26
5.3723e-06
1.471e-08
d
yr
n .3026435296862602 1.3668e-09 deg/d
Q 2.357578404050473 7.0984e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1571  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1998-06-26  
   last obs. used      2020-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50662  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:15  

Additional Information
 Earth MOID = 1.04952 au 
 Jupiter MOID = 2.93157 au 
 T_jup = 3.656 
[ 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 15.0   n/a MPO417162  
diameter diameter 2.296 km 0.303 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.403   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49901 (1999 XK164)          Discovered 1999-Dec-08 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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