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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 | 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06138463069203946 1.9624e-08  
a 2.418172856561487 7.3117e-09 au
q 2.269734208811946 4.7064e-08 au
i 5.042100805447996 9.2392e-07 deg
node 275.45716626073 9.5584e-06 deg
peri 125.6506344861577 1.1564e-05 deg
M 266.4434023891434 1.5824e-05 deg
tp 2459557.445045717657
(2021-Dec-08.94504572)
6.1085e-05 TDB
period 1373.502454555327
3.76
6.2295e-06
1.706e-08
d
yr
n .2621036451780863 1.1888e-09 deg/d
Q 2.566611504311028 7.7605e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2846  
   data-arc span      24031 days (65.79 yr)  
   first obs. used      1954-12-22  
   last obs. used      2020-10-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41324  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:51:58  

Additional Information
 Earth MOID = 1.2816 au 
 Jupiter MOID = 2.66932 au 
 T_jup = 3.507 
[ 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 12.89   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

[ show close-approach data ]
Alternate Designations
 1987 SH = 1961 VD1 = 1972 RG1 = 1983 RL7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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