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103004 (1999 XR98)
Classification: Main-belt Asteroid          SPK-ID: 2103004
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219755586381962 4.2948e-08  
a 2.725978520252677 1.9663e-08 au
q 2.393475767409133 1.1494e-07 au
i 6.541515263482217 4.8906e-06 deg
node 75.36236722161222 4.7514e-05 deg
peri 358.3733952592564 5.3421e-05 deg
M 251.5311484032455 2.7472e-05 deg
tp 2459695.818572211840
(2022-Apr-26.31857221)
0.00012827 TDB
period 1643.925268603081
4.50
1.7787e-05
4.87e-08
d
yr
n .2189880567417207 2.3694e-09 deg/d
Q 3.058481273096221 2.2062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      7147 days (19.57 yr)  
   first obs. used      1999-12-07  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54889  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:43:21  

Additional Information
 Earth MOID = 1.40793 au 
 Jupiter MOID = 2.19525 au 
 T_jup = 3.336 
[ 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 15.1   n/a MPO474903  
rotation period rot_per 4.562 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

103004 (1999 XR98)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XR98 = 2003 UY60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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