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49864 (1999 XS104)
Classification: Main-belt Asteroid          SPK-ID: 2049864
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 .06075372996674552 3.5405e-08  
a 2.202633187898789 6.1555e-09 au
q 2.068815005985394 7.7561e-08 au
i 5.294173775638702 3.5883e-06 deg
node 56.14391881336253 3.5081e-05 deg
peri 112.9209939995064 4.5665e-05 deg
M 28.25911169096851 2.7997e-05 deg
tp 2458906.772356107450
(2020-Feb-27.27235611)
9.2901e-05 TDB
period 1194.02025691069
3.27
5.0052e-06
1.37e-08
d
yr
n .3015024225229095 1.2639e-09 deg/d
Q 2.336451369812183 6.5295e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2091  
   data-arc span      13878 days (38.00 yr)  
   first obs. used      1982-07-20  
   last obs. used      2020-07-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4521  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:27  

Additional Information
 Earth MOID = 1.08027 au 
 Jupiter MOID = 2.63135 au 
 T_jup = 3.656 
[ 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 14.6   n/a MPO459191  
diameter diameter 3.195 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.301   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49864 (1999 XS104)          Discovered 1999-Dec-10 by Kobayashi, T. at Oizumi
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XS104 = 1989 XR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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