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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956515025075192 2.9721e-08  
a 2.270734919117537 7.6367e-09 au
q 1.826462220395901 6.7759e-08 au
i 3.821683473143351 4.1435e-06 deg
node 321.2711006153618 5.0059e-05 deg
peri 88.77957392124304 5.1251e-05 deg
M 210.2880134848631 1.2098e-05 deg
tp 2459520.259166044456
(2021-Nov-01.75916604)		 4.3387e-05 TDB
period 1249.821768660359
3.42		 6.3049e-06
1.726e-08		 d
yr
n .288041070356673 1.4531e-09 deg/d
Q 2.715007617839174 9.1308e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      32070 days (87.80 yr)  
   first obs. used      1932-11-22  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:49:34  

Additional Information
 Earth MOID = .841695 au 
 Jupiter MOID = 2.67012 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456708.5 (2014-Feb-20.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1950773781516313 2.9638e-08  
q 1.827885373657496 6.7479e-08 au
tp 2457021.345116143736
(2014-Dec-29.84511614)		 3.8329e-05 TDB
node 321.3319706439793 5.0008e-05 deg
peri 88.8238130830041 5.1212e-05 deg
i 3.823912369682411 4.1445e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1838  
   data-arc span      32070 days (87.80 yr)  
   first obs. used      1932-11-22  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49051  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:49:34  

Additional Information
 Jupiter MOID = 2.67012 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.784265225897495E-16 -1.991484445002371E-15 -1.165153995395544E-13 -2.644672503665154E-16 -5.292639868020652E-14 6.481452892554349E-17
q -1.991484445002371E-15 4.553454117358516E-15 3.287125178666147E-13 9.022084980448504E-16 1.338999938034743E-13 -4.077750771532687E-17
tp -1.165153995395544E-13 3.287125178666147E-13 1.46914520751001E-9 -3.881119694077615E-12 4.299101519977865E-10 3.925769849994377E-13
node -2.644672503665154E-16 9.022084980448504E-16 -3.881119694077615E-12 2.500755109073508E-9 -2.495822893379542E-9 2.458738205511147E-11
peri -5.292639868020652E-14 1.338999938034743E-13 4.299101519977865E-10 -2.495822893379542E-9 2.622620851818737E-9 -2.442845916043309E-11
i 6.481452892554349E-17 -4.077750771532687E-17 3.925769849994377E-13 2.458738205511147E-11 -2.442845916043309E-11 1.717692348072679E-11

[ 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 14.3   n/a MPO365303  
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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