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49418 (1998 XP73)
Classification: Main-belt Asteroid          SPK-ID: 2049418
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459438954395302 4.584e-08  
a 2.577173889774289 1.2706e-08 au
q 2.201051093075583 1.2081e-07 au
i 7.8753435137913 6.0737e-06 deg
node 22.53242966637573 2.5603e-05 deg
peri 121.6900805675676 3.3895e-05 deg
M 26.78491161860509 1.9495e-05 deg
tp 2458888.064947283811
(2020-Feb-08.56494728)
8.1826e-05 TDB
period 1511.17239265828
4.14
1.1176e-05
3.06e-08
d
yr
n .2382256331236502 1.7618e-09 deg/d
Q 2.953296686472995 1.4561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1489  
   data-arc span      21609 days (59.16 yr)  
   first obs. used      1960-09-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54759  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:42:18  

Additional Information
 Earth MOID = 1.22438 au 
 Jupiter MOID = 2.07302 au 
 T_jup = 3.398 
[ 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 14.2   n/a MPO502485  
diameter diameter 4.096 km 0.447 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 3.620 h n/a LCDB (Rev. 2019-August); 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.]
geometric albedo albedo 0.264   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

49418 (1998 XP73)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XP73 = 2000 JE16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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