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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 ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .194742596761979 1.4784e-08  
a 2.270906381466054 6.9593e-09 au
q 1.828664175736006 3.353e-08 au
i 3.822266192858065 5.1484e-07 deg
node 321.2585710946104 7.977e-06 deg
peri 88.77368507389539 8.4575e-06 deg
M 324.2645057354144 4.4828e-06 deg
tp 2459520.577937418932
(2021-Nov-02.07793742)
1.6034e-05 TDB
period 1249.963331697422
3.42
5.7458e-06
1.573e-08
d
yr
n .2880084486247513 1.3239e-09 deg/d
Q 2.713148587196103 8.3145e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1922  
   data-arc span      32402 days (88.71 yr)  
   first obs. used      1932-11-22  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49086  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:43:47  

Additional Information
 Earth MOID = .843392 au 
 Jupiter MOID = 2.67333 au 
 T_jup = 3.584 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456896.5 (2014-Aug-27.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195008106266873 1.4688e-08  
q 1.827873579574187 3.3311e-08 au
tp 2457021.401070292408
(2014-Dec-29.90107029)
9.1392e-06 TDB
node 321.3321508479713 7.9728e-06 deg
peri 88.8428859657827 8.4547e-06 deg
i 3.8239994560421 5.1451e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      1922  
   data-arc span      32402 days (88.71 yr)  
   first obs. used      1932-11-22  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49086  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 10:43:47  

Additional Information
 Jupiter MOID = 2.67333 au 
 T_jup = 3.584 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.157410778512075E-16 -4.825358175146744E-16 -9.089201701080796E-14 -3.550847415860375E-14 2.161626052680969E-15 9.352114420129529E-16
q -4.825358175146744E-16 1.109620827370708E-15 2.172533034000645E-13 8.039035645393793E-14 -5.28073112170957E-16 -2.131714217788897E-15
tp -9.089201701080796E-14 2.172533034000645E-13 8.352528820241302E-11 -3.922160490154394E-12 3.223635492055073E-11 -9.661751560656694E-13
node -3.550847415860375E-14 8.039035645393793E-14 -3.922160490154394E-12 6.356594514544124E-11 -6.248713675441076E-11 2.613112933596027E-12
peri 2.161626052680969E-15 -5.28073112170957E-16 3.223635492055073E-11 -6.248713675441076E-11 7.148263138777776E-11 -2.935388166947029E-12
i 9.352114420129529E-16 -2.131714217788897E-15 -9.661751560656694E-13 2.613112933596027E-12 -2.935388166947029E-12 2.647219138755311E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

Alternate Designations
 1973 SO4 = 1932 WK = 1973 UG4 = 1987 YG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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