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2249 Yamamoto (1942 GA)
Classification: Main-belt Asteroid          SPK-ID: 2002249
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0808922027466218 3.2139e-08  
a 3.19168337992336 1.6051e-08 au
q 2.933501080851576 1.0229e-07 au
i 4.103910266961843 4.0827e-06 deg
node 147.9029801329827 5.3834e-05 deg
peri 112.3826340825236 6.0147e-05 deg
M 148.6782715061909 2.7716e-05 deg
tp 2457740.352101272335
(2016-Dec-17.85210127)
0.0001591 TDB
period 2082.706776215553
5.70
1.5711e-05
4.301e-08
d
yr
n .1728519847878678 1.3039e-09 deg/d
Q 3.449865678995144 1.7349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2836  
   data-arc span      28360 days (77.65 yr)  
   first obs. used      1942-04-06  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46824  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:32:56  

Additional Information
 Earth MOID = 1.92104 au 
 Jupiter MOID = 1.60736 au 
 T_jup = 3.188 
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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 11.2   n/a MPO452192  
diameter diameter 33.606 km 0.449 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 31.590 h n/a LCDB (Rev. 2019-January); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.062   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2249 Yamamoto (1942 GA)          Discovered 1942-Apr-06 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1942 GA = 1932 PK = 1949 OX = 1968 WA = 1971 HY = 1972 RM = 1976 GX5 = 1978 RJ5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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