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2726 Kotelnikov (1979 SE9)
Classification: Main-belt Asteroid          SPK-ID: 2002726
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07609300861878934 3.0163e-08  
a 2.857339009988416 1.0338e-08 au
q 2.639915488074564 8.6243e-08 au
i 1.558164511677778 3.3449e-06 deg
node 355.6870544733421 0.00011203 deg
peri 47.00618112332344 0.00011407 deg
M 204.3240516899997 2.2492e-05 deg
tp 2460159.386802167280
(2023-Aug-02.88680217)
0.00011171 TDB
period 1764.172640421799
4.83
9.5745e-06
2.621e-08
d
yr
n .2040616613994915 1.1075e-09 deg/d
Q 3.074762531902267 1.1125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3384  
   data-arc span      24472 days (67.00 yr)  
   first obs. used      1954-06-30  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 21:55:44  

Additional Information
 Earth MOID = 1.64802 au 
 Jupiter MOID = 2.22845 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457328.5 (2015-Nov-02.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07477846122752496 3.009e-08  
q 2.645699347857204 8.5956e-08 au
tp 2456634.113713620221
(2013-Dec-07.61371362)
0.0001083 TDB
node 355.7232997426233 0.00011195 deg
peri 47.99867220436985 0.00011407 deg
i 1.5587342519324 3.3443e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3384  
   data-arc span      24472 days (67.00 yr)  
   first obs. used      1954-06-30  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43237  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 21:55:44  

Additional Information
 Jupiter MOID = 2.22845 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.054141001416383E-16 -2.57048537908973E-15 -1.018564689874948E-13 2.049827321577805E-15 -3.998984173304231E-14 8.293418711061081E-17
q -2.57048537908973E-15 7.388407121684275E-15 4.795659453865032E-13 -6.563264096157523E-15 1.577835243861439E-13 -2.155435391561332E-16
tp -1.018564689874948E-13 4.795659453865032E-13 1.172953246221001E-8 -1.141668276603557E-11 2.37741310480808E-9 -1.420215614944969E-13
node 2.049827321577805E-15 -6.563264096157523E-15 -1.141668276603557E-11 1.253331882804009E-8 -1.253091292068074E-8 2.40092126772137E-11
peri -3.998984173304231E-14 1.577835243861439E-13 2.37741310480808E-9 -1.253091292068074E-8 1.301168072791163E-8 -2.402640001903403E-11
i 8.293418711061081E-17 -2.155435391561332E-16 -1.420215614944969E-13 2.40092126772137E-11 -2.402640001903403E-11 1.118413021362804E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.25   n/a E2021B10  
diameter diameter 10.937 km 0.207 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 16.63 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.213   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2726 Kotelnikov (1979 SE9)          Discovered 1979-Sep-22 by Chernykh, N. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 SE9 = 1952 BR1 = 1955 UK1 = 1969 RC1 = 1972 GJ1 = 1974 SH1 = 1974 TN = A906 QE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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