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8707 Arakihiroshi (1994 CE2)
Classification: Main-belt Asteroid          SPK-ID: 2008707
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05563573588319658 3.7106e-08  
a 2.371355124192406 7.9852e-09 au
q 2.239423036817573 8.7864e-08 au
i .5695984187334632 3.5074e-06 deg
node 39.62916888189334 0.00041331 deg
peri 270.7024921764968 0.00041456 deg
M 171.6351394116483 3.214e-05 deg
tp 2457964.587987935382
(2017-Jul-30.08798794)
0.00011936 TDB
period 1333.808013487278
3.65
6.7371e-06
1.845e-08
d
yr
n .2699039114773122 1.3633e-09 deg/d
Q 2.50328721156724 8.4294e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1919  
   data-arc span      10209 days (27.95 yr)  
   first obs. used      1991-05-12  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49307  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 18:57:31  

Additional Information
 Earth MOID = 1.22411 au 
 Jupiter MOID = 2.61469 au 
 T_jup = 3.542 
[ 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 14.0   n/a MPO332901  

8707 Arakihiroshi           Discovered 1994 Feb. 12 by T. Kobayashi at Oizumi.
Hiroshi Araki (b. 1935) has been an amateur astronomer for more than half a century. During the close approach of Mars in 1956 he made many beautiful sketches of the planet. He is also an enthusiast in orbital calculation and optical designing.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 1994 CE2 = 1991 JX6 = 1991 NW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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