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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0938271530449168 4.1083e-08  
a 2.73468305629034 1.4978e-08 au
q 2.478095530638445 1.1536e-07 au
i 15.22821398194458 5.4496e-06 deg
node 293.8496066702143 1.5669e-05 deg
peri 76.70017900187082 3.1854e-05 deg
M 276.8948818955008 2.7035e-05 deg
tp 2458981.815269694315
(2020-May-12.31526969)
0.00012431 TDB
period 1651.805571316813
4.52
1.357e-05
3.715e-08
d
yr
n .2179433259284925 1.7905e-09 deg/d
Q 2.991270581942234 1.6383e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1926  
   data-arc span      25928 days (70.99 yr)  
   first obs. used      1948-12-10  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46814  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 01:34:58  

Additional Information
 Earth MOID = 1.52484 au 
 Jupiter MOID = 2.46723 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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