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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05822610176864544 7.9406e-08  
a 5.168090408177542 1.2974e-07 au
q 4.867172650121436 5.0071e-07 au
i 21.9343576039377 5.5588e-06 deg
node 230.0032346612484 1.6982e-05 deg
peri 176.8057671029955 5.5984e-05 deg
M 304.7152029106478 5.4408e-05 deg
tp 2459659.517275953799
(2022-Mar-21.01727595)
0.00065486 TDB
period 4291.346479212477
11.75
0.0001616
4.424e-07
d
yr
n .08388975389050039 3.159e-09 deg/d
Q 5.469008166233648 1.373e-07 au
  Orbit Determination Parameters
   # obs. used (total)      637  
   data-arc span      8015 days (21.94 yr)  
   first obs. used      1998-11-15  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:17  

Additional Information
 Earth MOID = 3.87746 au 
 Jupiter MOID = .067665 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 12.1   n/a MPO337992  
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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