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4039 Souseki (1987 SH)
Classification: Main-belt Asteroid          SPK-ID: 2004039
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06088808495816504 1.9534e-08  
a 2.417242227524588 7.4035e-09 au
q 2.270060977410607 4.6756e-08 au
i 5.039984036592418 9.2331e-07 deg
node 275.4290871951147 9.5609e-06 deg
peri 125.8937780573471 1.1546e-05 deg
M 317.5700720330962 1.5883e-05 deg
tp 2459558.288809477047
(2021-Dec-09.78880948)
6.0895e-05 TDB
period 1372.709646294201
3.76
6.3065e-06
1.727e-08
d
yr
n .2622550231011084 1.2049e-09 deg/d
Q 2.564423477638569 7.8543e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2884  
   data-arc span      24305 days (66.54 yr)  
   first obs. used      1954-12-22  
   last obs. used      2021-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41205  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:32:59  

Additional Information
 Earth MOID = 1.28236 au 
 Jupiter MOID = 2.66892 au 
 T_jup = 3.508 
[ 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 12.89   n/a E2021B10  
diameter diameter 6.634 km 0.703 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 2.77196 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2018) Minor Planet Bull. 45, 135-137.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.473   0.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B S   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)

4039 Souseki (1987 SH)          Discovered 1987-Sep-17 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1987 SH = 1961 VD1 = 1972 RG1 = 1983 RL7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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