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103205 (1999 XJ252)
Classification: Main-belt Asteroid          SPK-ID: 2103205
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160752167608118 4.0818e-08  
a 3.064315089715321 1.9019e-08 au
q 2.571719796809319 1.2844e-07 au
i 2.30320313093208 4.0586e-06 deg
node 108.4384517815944 0.00012536 deg
peri 62.65471791626767 0.00012621 deg
M 279.5764295487759 1.6192e-05 deg
tp 2459638.202881572606
(2022-Feb-27.70288157)
9.0157e-05 TDB
period 1959.289254158447
5.36
1.8241e-05
4.994e-08
d
yr
n .1837400982197634 1.7106e-09 deg/d
Q 3.556910382621324 2.2076e-08 au
  Orbit Determination Parameters
   # obs. used (total)      663  
   data-arc span      22027 days (60.31 yr)  
   first obs. used      1960-09-26  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52997  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:41  

Additional Information
 Earth MOID = 1.57828 au 
 Jupiter MOID = 1.41045 au 
 T_jup = 3.212 
[ 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 15.0   n/a MPO453484  
diameter diameter 3.844 km 0.910 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.109   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

103205 (1999 XJ252)          Discovered 1999-Dec-09 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XJ252 = 2000 AU255 = 2001 HD4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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