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27139 (1998 XX46)
Classification: Main-belt Asteroid          SPK-ID: 2027139
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606071057524318 3.707e-08  
a 2.612430944072846 1.187e-08 au
q 2.192855971167214 9.6448e-08 au
i 12.4530835101308 4.1676e-06 deg
node 283.3092839661664 2.3165e-05 deg
peri 358.7907346205222 2.8375e-05 deg
M 199.3020861521236 1.8229e-05 deg
tp 2459688.951568827509
(2022-Apr-19.45156883)
7.9509e-05 TDB
period 1542.288626176702
4.22
1.0511e-05
2.878e-08
d
yr
n .2334193444014637 1.5908e-09 deg/d
Q 3.032005916978479 1.3776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2009  
   data-arc span      18285 days (50.06 yr)  
   first obs. used      1970-01-10  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44718  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:57:48  

Additional Information
 Earth MOID = 1.1764 au 
 Jupiter MOID = 2.12955 au 
 T_jup = 3.358 
[ 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 12.8   n/a MPO351014  
diameter diameter 7.905 km 1.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.195 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 0.235   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

27139 (1998 XX46)          Discovered 1998-Dec-14 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XX46 = 1970 AH1 = 2000 AQ203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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