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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1606170547571006 3.7165e-08  
a 2.612131264341309 1.1945e-08 au
q 2.192578434023866 9.6803e-08 au
i 12.45239345952992 4.1945e-06 deg
node 283.3110694131342 2.4416e-05 deg
peri 358.6933430550024 2.981e-05 deg
M 106.0534589095226 1.8538e-05 deg
tp 2458146.230834165728
(2018-Jan-27.73083417)
7.8836e-05 TDB
period 1542.023253007298
4.22
1.0577e-05
2.896e-08
d
yr
n .2334595145033758 1.6013e-09 deg/d
Q 3.031684094658751 1.3863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1918  
   data-arc span      18219 days (49.88 yr)  
   first obs. used      1970-01-10  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4545  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:00:49  

Additional Information
 Earth MOID = 1.17554 au 
 Jupiter MOID = 2.12824 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-January); 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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