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JPL Small-Body Database Browser
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108081 (2001 FM171)
Classification: Main-belt Asteroid          SPK-ID: 2108081
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1724025324861558 5.4512e-08  
a 2.63029962631071 1.2096e-08 au
q 2.176829309537355 1.4475e-07 au
i 32.62895188379478 6.7453e-06 deg
node 170.6701219915212 7.4744e-06 deg
peri 155.3143298548251 2.0659e-05 deg
M 65.25327968465038 1.4972e-05 deg
tp 2458718.073069797849
(2019-Aug-22.57306980)
6.5176e-05 TDB
period 1558.139228620126
4.27
1.0748e-05
2.943e-08
d
yr
n .2310448215329337 1.5937e-09 deg/d
Q 3.083769943084066 1.4181e-08 au
  Orbit Determination Parameters
   # obs. used (total)      960  
   data-arc span      7733 days (21.17 yr)  
   first obs. used      1998-09-27  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51167  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:58:21  

Additional Information
 Earth MOID = 1.18774 au 
 Jupiter MOID = 2.40106 au 
 T_jup = 3.158 
[ 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 14.4   n/a MPO351613  
diameter diameter 3.293 km 0.444 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 31.386 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.409   0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108081 (2001 FM171)          Discovered 2001-Mar-24 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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