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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09352640857011522 4.093e-08  
a 2.732821423803055 1.4709e-08 au
q 2.477230450771287 1.1495e-07 au
i 15.23259240700637 5.4485e-06 deg
node 293.8492548681401 1.5648e-05 deg
peri 77.08732508141244 3.2e-05 deg
M 3.751322050129804 2.7277e-05 deg
tp 2458983.305198903877
(2020-May-13.80519890)
0.00012502 TDB
period 1650.119161160773
4.52
1.3322e-05
3.647e-08
d
yr
n .2181660624719724 1.7614e-09 deg/d
Q 2.988412396834824 1.6085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1934  
   data-arc span      25931 days (71.00 yr)  
   first obs. used      1948-12-10  
   last obs. used      2019-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:57:48  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2191-Mar-29 10:11 00:06 Eunom 0.0204877982502287 0.0204745166210382 0.0205011440634714 2.07111640230631 2.07111607148451 2521393.924323288 5.6961427090633 1923.56364770251 46.1836532125276 69.9094319361351 62087.8499970389 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 00:58:02 2020-Feb-23 00:58

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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