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4682 Bykov (1973 SO4)
Classification: Main-belt Asteroid          SPK-ID: 2004682
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1951277745065203 1.4821e-08  
a 2.27163995633163 7.0525e-09 au
q 1.82837990717255 3.3617e-08 au
i 3.822309577343201 5.1457e-07 deg
node 321.2597060912496 7.9824e-06 deg
peri 88.72239544412477 8.4655e-06 deg
M 267.9165360346865 4.3358e-06 deg
tp 2459520.379805027637
(2021-Nov-01.87980503)
1.6292e-05 TDB
period 1250.569047373446
3.42
5.8238e-06
1.594e-08
d
yr
n .287868951143564 1.3406e-09 deg/d
Q 2.71490000549071 8.4287e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1875  
   data-arc span      32070 days (87.80 yr)  
   first obs. used      1932-11-22  
   last obs. used      2020-09-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49313  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:38:23  

Additional Information
 Earth MOID = .842747 au 
 Jupiter MOID = 2.67109 au 
 T_jup = 3.584 
[ 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 14.29   n/a E2021B10  
diameter diameter 3.934 km 0.391 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
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)

4682 Bykov (1973 SO4)          Discovered 1973-Sep-27 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1973 SO4 = 1932 WK = 1973 UG4 = 1987 YG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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