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7203 Sigeki (1995 DG2)
Classification: Main-belt Asteroid          SPK-ID: 2007203
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620653876450756 1.6957e-08  
a 2.438385021373875 7.5198e-09 au
q 2.043207207656972 4.3121e-08 au
i 2.564329305813591 6.4596e-07 deg
node 325.206998271042 8.6264e-06 deg
peri 203.0082558919964 1.2073e-05 deg
M 274.180940397646 7.1245e-06 deg
tp 2459532.037837314911
(2021-Nov-13.53783731)
2.8281e-05 TDB
period 1390.758905846762
3.81
6.4335e-06
1.761e-08
d
yr
n .2588514792079036 1.1974e-09 deg/d
Q 2.833562835090778 8.7385e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2714  
   data-arc span      38701 days (105.96 yr)  
   first obs. used      1915-03-20  
   last obs. used      2021-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 19:36:42  

Additional Information
 Earth MOID = 1.0498 au 
 Jupiter MOID = 2.14113 au 
 T_jup = 3.484 
[ 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 13.31   n/a E2021B10  
diameter diameter 5.752 km 0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.420 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.307   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

7203 Sigeki           Discovered 1995 Feb. 27 by S. Otomo at Kiyosato.
Sigeki Horiuchi (b. 1949) is a factory manager in the town of Shimosuwa, Nagano prefecture. He is involved with the organization of the annual Haramura star party.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1995 DG2 = 1976 DF = 1976 GD4 = A915 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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