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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05590493637170488 3.0021e-08  
a 2.370972700313658 6.8166e-09 au
q 2.238423622363574 7.3702e-08 au
i .5696439585852769 3.484e-06 deg
node 39.6218782054852 0.0003101 deg
peri 270.7438596388616 0.00031175 deg
M 279.594049785264 3.1918e-05 deg
tp 2459298.333774210945
(2021-Mar-24.83377421)
0.00011817 TDB
period 1333.48537551752
3.65
5.7507e-06
1.574e-08
d
yr
n .2699692149681699 1.1643e-09 deg/d
Q 2.503521778263742 7.1977e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2321  
   data-arc span      10695 days (29.28 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46613  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:18:57  

Additional Information
 Earth MOID = 1.22392 au 
 Jupiter MOID = 2.61491 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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