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JPL Small-Body Database Browser
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108004 (2001 FS138)
Classification: Main-belt Asteroid          SPK-ID: 2108004
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02817832462188303 4.4165e-08  
a 2.727041741724127 1.8514e-08 au
q 2.650198274268399 1.1782e-07 au
i 6.747770606695076 4.7635e-06 deg
node 110.9558560962094 4.5094e-05 deg
peri 33.23319909000335 0.00010635 deg
M 131.3224660836782 9.5327e-05 deg
tp 2458400.470456539550
(2018-Oct-08.97045654)
0.00043561 TDB
period 1644.887139936292
4.50
1.6751e-05
4.586e-08
d
yr
n .2188600003365235 2.2288e-09 deg/d
Q 2.803885209179855 1.9036e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      7068 days (19.35 yr)  
   first obs. used      1999-12-07  
   last obs. used      2019-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58842  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:00:00  

Additional Information
 Earth MOID = 1.66604 au 
 Jupiter MOID = 2.1954 au 
 T_jup = 3.345 
[ 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 15.3   n/a MPO280495  
diameter diameter 4.987 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 8.764 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.071   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108004 (2001 FS138)          Discovered 2001-Mar-21 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 FS138 = 1999 XS63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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