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9871 Jeon (1992 DG1)
Classification: Main-belt Asteroid          SPK-ID: 2009871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1495943179817566 2.0056e-08  
a 2.370902654674515 7.0418e-09 au
q 2.016229089047345 4.8435e-08 au
i 5.568447887991851 8.4203e-07 deg
node 347.8601079789999 3.3651e-06 deg
peri 231.7820031423244 4.688e-06 deg
M 287.6497286210765 5.9831e-06 deg
tp 2459468.482648485934
(2021-Sep-10.98264849)
2.2906e-05 TDB
period 1333.426283222486
3.65
5.9406e-06
1.626e-08
d
yr
n .2699811789595067 1.2028e-09 deg/d
Q 2.725576220301685 8.0953e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2509  
   data-arc span      22661 days (62.04 yr)  
   first obs. used      1959-03-06  
   last obs. used      2021-03-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:25:23  

Additional Information
 Earth MOID = 1.01349 au 
 Jupiter MOID = 2.26671 au 
 T_jup = 3.523 
[ 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 13.40   n/a MPCxxxxx  
diameter diameter 3.763 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.787   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

9871 Jeon           Discovered 1992 Feb. 28 by T. Fujii and K. Watanabe at Kitami.
Jeon San-Woon (b. 1928) is a historian of Korean astronomy and technology. He served as president of the Korean Society of History and Science. He was also a guest professor at Kyoto University in Japan and at Yonsei University in Korea.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040928/MPCPages.arcLast Updated: 2004-09-28

Alternate Designations
 1992 DG1 = 1952 HD2 = 1959 EN = 1970 EH3 = 1988 BN1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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