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101492 (1998 XT1)
Classification: Jupiter Trojan          SPK-ID: 2101492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05845161518776762 7.9187e-08  
a 5.168163994864747 1.2737e-07 au
q 4.866076461809636 4.9816e-07 au
i 21.93430849046966 5.4565e-06 deg
node 230.0036894411176 1.6613e-05 deg
peri 176.9920779154731 5.4811e-05 deg
M 321.3393857437824 5.3031e-05 deg
tp 2459661.360095294713
(2022-Mar-22.86009529)
0.00063609 TDB
period 4291.438134080194
11.75
0.00015864
4.343e-07
d
yr
n .08388796220574217 3.1011e-09 deg/d
Q 5.470251527919857 1.3481e-07 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      8095 days (22.16 yr)  
   first obs. used      1998-11-15  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47317  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:37:02  

Additional Information
 Earth MOID = 3.8755 au 
 Jupiter MOID = .0679513 au 
 T_jup = 2.853 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.16   n/a E2021B55  
diameter diameter 20.862 km 0.611 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.071   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

101492 (1998 XT1)          Discovered 1998-Dec-07 by ODAS at Caussols
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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