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173631 (2001 FH87)
Classification: Main-belt Asteroid          SPK-ID: 2173631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1645410656811069 5.5426e-08  
a 2.434993626687517 1.5257e-08 au
q 2.034337180425649 1.2736e-07 au
i 13.9054455596258 5.7385e-06 deg
node 38.92844965012254 2.2106e-05 deg
peri 81.86163443624832 3.1507e-05 deg
M 70.93609662354848 2.3587e-05 deg
tp 2458727.029832666447
(2019-Aug-31.52983267)
8.9438e-05 TDB
period 1387.858437750537
3.80
1.3044e-05
3.571e-08
d
yr
n .25939244969645 2.4379e-09 deg/d
Q 2.835650072949385 1.7767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      389  
   data-arc span      7022 days (19.23 yr)  
   first obs. used      2001-03-21  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:19:10  

Additional Information
 Earth MOID = 1.10339 au 
 Jupiter MOID = 2.37427 au 
 T_jup = 3.447 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO412971  

173631 (2001 FH87)          Discovered 2001-Mar-21 by LONEOS at Anderson Mesa
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 2001 FH87 = 2003 UY11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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