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4461 Sayama (1990 EL)
Classification: Main-belt Asteroid          SPK-ID: 2004461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1305614757697577 4.0218e-08  
a 2.850744393060078 1.6009e-08 au
q 2.478546998059792 1.1736e-07 au
i 16.02252181419775 4.8645e-06 deg
node 133.1937884250213 1.7519e-05 deg
peri 150.8804984051639 2.6594e-05 deg
M 277.0390437484381 2.1599e-05 deg
tp 2459005.641837639511
(2020-Jun-05.14183764)
0.00010653 TDB
period 1758.068712563544
4.81
1.4809e-05
4.054e-08
d
yr
n .2047701534231064 1.7249e-09 deg/d
Q 3.222941788060364 1.8099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1851  
   data-arc span      28182 days (77.16 yr)  
   first obs. used      1942-03-15  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46109  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 00:27:56  

Additional Information
 Earth MOID = 1.47301 au 
 Jupiter MOID = 2.05395 au 
 T_jup = 3.236 
[ 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 11.4   n/a MPO395039  
diameter diameter 17.233 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 40.8 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 161-165.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.136   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B X   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)

4461 Sayama (1990 EL)          Discovered 1990-Mar-05 by Sugie, A. at Dynic
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 EL = 1932 EJ = 1942 FA = 1943 OJ = 1975 BN = 1977 QC3 = 1980 EL = 1987 VP = 1988 VG7 = 1988 XC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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