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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05590493705552911 3.0034e-08  
a 2.370972700432765 6.8182e-09 au
q 2.238423620854693 7.3728e-08 au
i .5696439701315812 3.4852e-06 deg
node 39.62187630940257 0.00031042 deg
peri 270.7438617989767 0.00031207 deg
M 279.5940494297078 3.1921e-05 deg
tp 2459298.333775550413
(2021-Mar-24.83377555)
0.00011818 TDB
period 1333.485375618002
3.65
5.7521e-06
1.575e-08
d
yr
n .2699692149478269 1.1645e-09 deg/d
Q 2.503521780010837 7.1994e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2309  
   data-arc span      10676 days (29.23 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46644  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:01:15  

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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