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46793 Phinney (1998 JP)
Classification: Main-belt Asteroid          SPK-ID: 2046793
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817800131639483 2.962e-08  
a 2.253102683673266 7.1209e-09 au
q 1.843533648175412 6.6427e-08 au
i 6.55821618332941 4.5803e-06 deg
node 1.776019697970058 2.7864e-05 deg
peri 297.3491538554868 3.0727e-05 deg
M 244.9362178545126 1.4591e-05 deg
tp 2459791.326276884831
(2022-Jul-30.82627688)
5.0839e-05 TDB
period 1235.29278308286
3.38
5.8562e-06
1.603e-08
d
yr
n .2914288862771185 1.3816e-09 deg/d
Q 2.662671719171119 8.4153e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      13073 days (35.79 yr)  
   first obs. used      1985-08-24  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:48:41  

Additional Information
 Earth MOID = .838915 au 
 Jupiter MOID = 2.57918 au 
 T_jup = 3.595 
[ 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 14.87   n/a MPCxxxxx  
diameter diameter 2.202 km 0.466 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.83 h n/a LCDB (Rev. 2020-October); 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:
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.276   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46793 Phinney           Discovered 1998 May 1 by NEAT at Haleakala.
Jeffrey L. Phinney's (b. 1957) love of the sky brought him to Palomar Observatory in 1985. After a short stint as a telescope operator, he joined the 1.2-m Oschin Schmidt Telescope team, where his wide-ranging skills contributed significantly to the success of the Second Palomar Sky Survey.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

Alternate Designations
 1998 JP = 1985 QA7 = 1999 XQ236 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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