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118108 (2398 T-3)
Classification: Mars-crossing Asteroid          SPK-ID: 2118108
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3144188150540529 4.1221e-08  
a 2.420875025148264 1.0732e-08 au
q 1.659706368347196 9.7509e-08 au
i 4.840741670770957 4.895e-06 deg
node 352.3647301261335 5.4769e-05 deg
peri 60.80943147923388 5.5507e-05 deg
M 142.8665289482664 9.484e-06 deg
tp 2458654.509640400636
(2019-Jun-20.00964040)
3.4247e-05 TDB
period 1375.8053121522
3.77
9.1484e-06
2.505e-08
d
yr
n .2616649294927091 1.7399e-09 deg/d
Q 3.182043681949331 1.4106e-08 au
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      15562 days (42.61 yr)  
   first obs. used      1977-10-12  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5583  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:55:45  

Additional Information
 Earth MOID = .67644 au 
 Jupiter MOID = 2.23407 au 
 T_jup = 3.440 
[ 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 16.02   n/a E2021B55  
diameter diameter 1.742 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.254   0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

118108 (2398 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2398 T-3 = 2000 WV55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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