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1979 Sakharov (2006 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2001979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1010586595814625 3.148e-08  
a 2.373461738884257 7.2802e-09 au
q 2.133602876984727 7.4809e-08 au
i 6.047812090089525 3.9058e-06 deg
node 202.6373108234548 3.4565e-05 deg
peri 221.0518620557317 4.0191e-05 deg
M 120.9169053693002 2.011e-05 deg
tp 2458751.903064448235
(2019-Sep-25.40306445)
7.4421e-05 TDB
period 1335.585758710937
3.66
6.145e-06
1.682e-08
d
yr
n .2695446530872417 1.2402e-09 deg/d
Q 2.613320600783787 8.0159e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2248  
   data-arc span      22032 days (60.32 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:59:33  

Additional Information
 Earth MOID = 1.14966 au 
 Jupiter MOID = 2.65824 au 
 T_jup = 3.529 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456579.5 (2013-Oct-14.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1003244480509612 3.1399e-08  
q 2.135413143646465 7.4518e-08 au
tp 2456078.083675910635
(2012-May-30.58367591)
7.5303e-05 TDB
node 202.6784273325468 3.4568e-05 deg
peri 220.5967983900958 4.0306e-05 deg
i 6.046090668954435 3.9069e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2248  
   data-arc span      22032 days (60.32 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:59:33  

Additional Information
 Jupiter MOID = 2.65824 au 
 T_jup = 3.529 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.858700591078884E-16 -2.330837343569525E-15 -2.714558181045783E-13 1.638725238736019E-15 -7.886459968295398E-14 -3.995926036833975E-17
q -2.330837343569525E-15 5.552977141568136E-15 6.067416623805151E-13 -4.351006569039687E-15 1.798995175698258E-13 2.765170185318044E-16
tp -2.714558181045783E-13 6.067416623805151E-13 5.670547063234429E-9 -1.14238623209722E-11 1.572925092015699E-9 4.391272570631263E-13
node 1.638725238736019E-15 -4.351006569039687E-15 -1.14238623209722E-11 1.194915535017574E-9 -1.190877417475796E-9 -2.04168617062983E-11
peri -7.886459968295398E-14 1.798995175698258E-13 1.572925092015699E-9 -1.190877417475796E-9 1.624556540357838E-9 2.041988656282635E-11
i -3.995926036833975E-17 2.765170185318044E-16 4.391272570631263E-13 -2.04168617062983E-11 2.041988656282635E-11 1.526351107823334E-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 13.68   n/a E2021B10  
diameter diameter 4.760 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.5209 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2011) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J.; Inasaridze, R.Y.; Kvaratskhelia, O.I.; Ayvazian, V.; et al. (2013) Minor Planet Bull. 40, 169-172.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm]
[Oey, J. (2014) Minor Planet Bull. 41, 276-281.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.394   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1979 Sakharov           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Named in honor of Academician Andrej Dmitrievich Sakharov, distinguished physicist and mathematician -- and a courageous individual.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 6207Last Updated: 2006-03-21

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1989-Jul-08 11:06 < 00:01 Eunom 0.0360824353955434 0.0360809302561057 0.0360839405367083 4.84362453106487 4.84362445074416 2447715.962365974 0.393527612654022 76.1778106188434 26.6164524098334 -10.753717396611 79175.8044441569 T 31 CATAB v2.0f-lin.ifort 2021-Feb-24 00:59:39 2021-Feb-24 00:59

Alternate Designations
 2006 P-L = 1971 SQ3 = 1982 SZ12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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