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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05611983294241265 1.0868e-08  
a 2.371777195856446 6.3257e-09 au
q 2.238673455848359 2.7929e-08 au
i .569597960194184 8.6923e-07 deg
node 39.62084269449541 6.8812e-05 deg
peri 270.4705907668147 7.1912e-05 deg
M 333.8508608391081 2.136e-05 deg
tp 2459297.409009801961
(2021-Mar-23.90900980)
7.9209e-05 TDB
period 1334.16413114213
3.65
5.3375e-06
1.461e-08
d
yr
n .269831868206363 1.0795e-09 deg/d
Q 2.504880935864533 6.6807e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2342  
   data-arc span      10695 days (29.28 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-08-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46788  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:49:45  

Additional Information
 Earth MOID = 1.22214 au 
 Jupiter MOID = 2.61233 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 14.05   n/a E2021B10  

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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