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23989 Farpoint (1999 RF)
Classification: Main-belt Asteroid          SPK-ID: 2023989
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905869463614805 4.5099e-08  
a 2.617777367950271 1.1501e-08 au
q 2.118863173138436 1.2004e-07 au
i 14.61326455764963 4.8064e-06 deg
node 174.0857299118514 1.4546e-05 deg
peri 207.4246817839534 1.7111e-05 deg
M 302.3279499002363 9.9842e-06 deg
tp 2459248.333710411899
(2021-Feb-02.83371041)
4.3498e-05 TDB
period 1547.025562537597
4.24
1.0195e-05
2.791e-08
d
yr
n .2327046228049971 1.5335e-09 deg/d
Q 3.116691562762107 1.3693e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1076  
   data-arc span      9972 days (27.30 yr)  
   first obs. used      1993-04-14  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57842  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:05:22  

Additional Information
 Earth MOID = 1.1296 au 
 Jupiter MOID = 2.36697 au 
 T_jup = 3.335 
[ 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 MPO474081  
diameter diameter 3.519 km 1.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.206   0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

23989 Farpoint           Discovered 1999 Sept. 3 by G. Hug and G. Bell at Farpoint Observatory.
Farpoint Observatory was constructed near the towns of Harveyville and Eskridge, Kansas. Finished in Sept. 1997, this facility was a project of the Northeast Kansas Amateur Astronomers League, Inc. NEKAAL members worked very hard over years to make Farpoint a first-class amateur-run observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1999 RF = 1997 GG4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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