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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08069104394106535 2.2648e-08  
a 3.191811923773003 1.3395e-08 au
q 2.934261287580219 7.6103e-08 au
i 4.10478114919314 1.0666e-06 deg
node 147.88648286191 9.6571e-06 deg
peri 112.6938648772824 1.18e-05 deg
M 252.0330646560153 8.5453e-06 deg
tp 2459825.158478951433
(2022-Sep-02.65847895)
4.9794e-05 TDB
period 2082.832597832414
5.70
1.3112e-05
3.59e-08
d
yr
n .1728415429903723 1.0881e-09 deg/d
Q 3.449362559965786 1.4476e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3413  
   data-arc span      28842 days (78.97 yr)  
   first obs. used      1942-04-06  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44272  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:05:46  

Additional Information
 Earth MOID = 1.92041 au 
 Jupiter MOID = 1.60726 au 
 T_jup = 3.188 
[ 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 11.23   n/a MPCxxxxx  
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. 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:
[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

[ show close-approach data ]
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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