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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459439095452646 4.5267e-08  
a 2.577173883192781 1.1341e-08 au
q 2.201051051101675 1.1999e-07 au
i 7.875349316956884 5.197e-06 deg
node 22.53242894513301 2.5166e-05 deg
peri 121.6900696248472 3.2834e-05 deg
M 26.78492839286478 1.7243e-05 deg
tp 2458888.064877301183
(2020-Feb-08.56487730)
7.2568e-05 TDB
period 1511.172386869501
4.14
9.9748e-06
2.731e-08
d
yr
n .2382256340362102 1.5724e-09 deg/d
Q 2.953296715283886 1.2996e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1756  
   data-arc span      21762 days (59.58 yr)  
   first obs. used      1960-09-29  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51257  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:52:56  

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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