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3829 Gunma (1988 EM)
Classification: Main-belt Asteroid          SPK-ID: 2003829
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166429020569514 1.9156e-08  
a 2.785534704614818 9.9116e-09 au
q 2.321940891963383 5.4853e-08 au
i 7.550677392583721 3.4195e-07 deg
node 189.5251108990668 7.8567e-06 deg
peri 314.4618721205657 1.0604e-05 deg
M 22.71987878227299 5.3001e-06 deg
tp 2459093.332081268715
(2020-Aug-31.83208127)
2.4939e-05 TDB
period 1698.09227914388
4.65
9.0633e-06
2.481e-08
d
yr
n .2120026128270837 1.1315e-09 deg/d
Q 3.249128517266252 1.1561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2655  
   data-arc span      26057 days (71.34 yr)  
   first obs. used      1949-11-19  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:14:14  

Additional Information
 Earth MOID = 1.34085 au 
 Jupiter MOID = 1.79725 au 
 T_jup = 3.298 
[ 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 12.23   n/a MPCxxxxx  
diameter diameter 24.33 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
rotation period rot_per 4.728 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Black, S.; Linville, D.; Michalik, D.; Wolf, M.; Ditteon, R. (2016) Minor Planet Bull. 43, 287-289.]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 234-239.]
[Lang, K.; Jacobsen, J.; Kristensen, L.H. (2016) Minor Planet Bull. 43, 255-256.]
[Zeigler, K.; Hanshaw, B. (2016) Minor Planet Bull. 43, 199-200.]
geometric albedo albedo 0.0393   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 7
SMASSII spectral type spec_B Ch   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3829 Gunma           Discovered 1988 Mar. 10 by T. Kojima at Chiyoda.
Named for the prefecture in central Japan that is home to the discoverer. A public astronomical observatory under construction in Gunma will include a 1.5-m telescope, the largest in Japan for public use. This telescope will also be used for astronomical research and discovery.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19961026/MPCPages.arcLast Updated: 2003-09-26

[ show close-approach data ]
Alternate Designations
 1988 EM = 1951 GO1 = 1958 TD = 1979 HX6 = 1981 SU4 = 1981 UY10 = 1984 KG = 1986 UE2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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