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46108 (2001 FW18)
Classification: Main-belt Asteroid          SPK-ID: 2046108
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828963955911875 4.5479e-08  
a 2.241880507573534 7.5442e-09 au
q 1.831848643392193 1.0042e-07 au
i 2.033389839548199 3.6857e-06 deg
node 281.8108484235731 0.00011887 deg
peri 57.03677186512109 0.00011942 deg
M 116.7219583977195 1.3267e-05 deg
tp 2458602.972494775031
(2019-Apr-29.47249477)
4.4395e-05 TDB
period 1226.075229078617
3.36
6.1888e-06
1.694e-08
d
yr
n .2936198297314401 1.4821e-09 deg/d
Q 2.651912371754876 8.924e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      10518 days (28.80 yr)  
   first obs. used      1991-04-13  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51092  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:21:45  

Additional Information
 Earth MOID = .823801 au 
 Jupiter MOID = 2.73021 au 
 T_jup = 3.611 
[ 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 15.5   n/a MPO250640  
rotation period rot_per 3.06 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.]

46108 (2001 FW18)          Discovered 2001-Mar-19 by LONEOS at Anderson Mesa
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 FW18 = 1992 XF1 = 1998 KW22 = 2000 AY12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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