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46169 (2001 FY87)
Classification: Main-belt Asteroid          SPK-ID: 2046169
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05492945260989489 3.9301e-08  
a 2.788103615932746 1.5193e-08 au
q 2.634954610489892 1.1635e-07 au
i 6.905120807654355 4.4001e-06 deg
node 73.8328209090409 3.5138e-05 deg
peri 244.1377208308264 5.586e-05 deg
M 280.9681916362901 4.3923e-05 deg
tp 2459373.802767798355
(2021-Jun-08.30276780)
0.00020745 TDB
period 1700.441875111098
4.66
1.3899e-05
3.805e-08
d
yr
n .2117096769194063 1.7305e-09 deg/d
Q 2.941252621375601 1.6028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      884  
   data-arc span      10709 days (29.32 yr)  
   first obs. used      1991-02-15  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55506  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:39:23  

Additional Information
 Earth MOID = 1.63008 au 
 Jupiter MOID = 2.21626 au 
 T_jup = 3.317 
[ 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 14.7   n/a MPO436104  
rotation period rot_per 4.588 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.]

46169 (2001 FY87)          Discovered 2001-Mar-21 by LONEOS at Anderson Mesa
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 FY87 = 1999 XN171 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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