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2582 Harimaya-Bashi (1981 SA)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002582
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06490343709722284 3.9432e-08  
a 3.202882780404572 2.276e-08 au
q 2.995004679336806 1.3198e-07 au
i 18.12241527015924 5.2069e-06 deg
node 56.25107196065968 1.3444e-05 deg
peri 234.3488180696823 4.3797e-05 deg
M 20.33715821798259 4.1629e-05 deg
tp 2458882.223691790341
(2020-Feb-02.72369179)
0.0002422 TDB
period 2093.67850213347
5.73
2.2317e-05
6.11e-08
d
yr
n .1719461701656476 1.8328e-09 deg/d
Q 3.410760881472338 2.4238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2264  
   data-arc span      30006 days (82.15 yr)  
   first obs. used      1938-04-23  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41001  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:47:07  

Additional Information
 Earth MOID = 2.01364 au 
 Jupiter MOID = 1.70371 au 
 T_jup = 3.113 
[ 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 10.5   n/a MPO452198  
diameter diameter 28.87 km 3.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
rotation period rot_per 7.238 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Sauppe, J.; Torno, S.; Lemke-Oliver, R.; Ditteon, R. (2007) Minor Planet Bull. 34, 119-122.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.1337   0.043 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3
SMASSII spectral type spec_B Xc   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)

2582 Harimaya-Bashi (1981 SA)          Discovered 1981-Sep-26 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1981 SA = 1927 JC = 1935 WA = 1938 HB = 1958 VH = 1975 XT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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