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49863 (1999 XK104)
Classification: Main-belt Asteroid          SPK-ID: 2049863
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686167512655816 4.1128e-08  
a 2.176606838207738 6.4578e-09 au
q 1.8095944643667 8.8292e-08 au
i 2.047604889661429 3.3318e-06 deg
node 291.1842361563758 0.00013099 deg
peri 57.05682569360113 0.0001315 deg
M 205.2568858717235 1.349e-05 deg
tp 2459504.670281620897
(2021-Oct-17.17028162)
4.5041e-05 TDB
period 1172.920051441287
3.21
5.22e-06
1.429e-08
d
yr
n .306926290123211 1.3659e-09 deg/d
Q 2.543619212048777 7.5467e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1063  
   data-arc span      8423 days (23.06 yr)  
   first obs. used      1997-01-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49605  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:36:03  

Additional Information
 Earth MOID = .8039 au 
 Jupiter MOID = 2.86781 au 
 T_jup = 3.665 
[ 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 16.0   n/a MPO449320  
diameter diameter 4.178 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49863 (1999 XK104)          Discovered 1999-Dec-07 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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