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27142 (1998 XG61)
Classification: Main-belt Asteroid          SPK-ID: 2027142
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09352640686493091 3.9774e-08  
a 2.732821424114733 1.4295e-08 au
q 2.477230455713779 1.1109e-07 au
i 15.23259237771219 5.2402e-06 deg
node 293.849254967981 1.5564e-05 deg
peri 77.08732556370896 3.1505e-05 deg
M 3.751321319555096 2.644e-05 deg
tp 2458983.305202249645
(2020-May-13.80520225)
0.00012119 TDB
period 1650.119161443067
4.52
1.2947e-05
3.545e-08
d
yr
n .2181660624346498 1.7118e-09 deg/d
Q 2.988412392515687 1.5632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1980  
   data-arc span      26170 days (71.65 yr)  
   first obs. used      1948-12-10  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46464  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:27:22  

Additional Information
 Earth MOID = 1.52527 au 
 Jupiter MOID = 2.47333 au 
 T_jup = 3.296 
[ 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 12.7   n/a MPO452549  
diameter diameter 12.141 km 2.871 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.122   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

27142 (1998 XG61)          Discovered 1998-Dec-13 by Spacewatch at Kitt Peak
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XG61 = 1948 XE = 1999 BR25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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