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2475 Semenov (1972 TF2)
Classification: Main-belt Asteroid          SPK-ID: 2002475
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1014788184328199 4.5857e-08  
a 3.039288757102304 1.512e-08 au
q 2.730865325155408 1.4434e-07 au
i 9.084992783002576 4.6277e-06 deg
node 209.9624414532842 2.3954e-05 deg
peri 181.0404563806018 3.0689e-05 deg
M 3.005963514254876 1.9345e-05 deg
tp 2458984.340140656627
(2020-May-14.84014066)
0.00010398 TDB
period 1935.335986623377
5.30
1.4442e-05
3.954e-08
d
yr
n .1860142127714474 1.3881e-09 deg/d
Q 3.347712189049199 1.6655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2412  
   data-arc span      40667 days (111.34 yr)  
   first obs. used      1908-09-21  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:22:48  

Additional Information
 Earth MOID = 1.73637 au 
 Jupiter MOID = 2.08424 au 
 T_jup = 3.214 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456817.5 (2014-Jun-09.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1017913998133603 4.6174e-08  
q 2.73097051040533 1.4543e-07 au
tp 2457029.821795397581
(2015-Jan-07.32179540)
0.00010123 TDB
node 210.053440798509 2.3974e-05 deg
peri 177.9398948465063 3.0549e-05 deg
i 9.075633663915633 4.6345e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2412  
   data-arc span      40667 days (111.34 yr)  
   first obs. used      1908-09-21  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:22:48  

Additional Information
 Jupiter MOID = 2.08424 au 
 T_jup = 3.214 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.132055027222132E-15 -6.68874692881476E-15 -1.369937384503858E-12 -4.092442119885042E-15 -1.826790144446356E-13 -9.637587677261147E-16
q -6.68874692881476E-15 2.114913953757585E-14 4.22524382707972E-12 1.284791104761416E-14 5.540174225822808E-13 3.666355847462649E-15
tp -1.369937384503858E-12 4.22524382707972E-12 1.024650996700532E-8 2.989262100433285E-12 1.925325143037062E-9 3.733257356937617E-12
node -4.092442119885042E-15 1.284791104761416E-14 2.989262100433285E-12 5.747724281454128E-10 -5.670217239569911E-10 -3.215815749321659E-11
peri -1.826790144446356E-13 5.540174225822808E-13 1.925325143037062E-9 -5.670217239569911E-10 9.332233694538018E-10 3.243361861953024E-11
i -9.637587677261147E-16 3.666355847462649E-15 3.733257356937617E-12 -3.215815749321659E-11 3.243361861953024E-11 2.147824679933415E-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 11.6   n/a MPO452196  
diameter diameter 14.494 km 0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.171   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2475 Semenov (1972 TF2)          Discovered 1972-Oct-08 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1972 TF2 = 1961 TC1 = 1972 TK4 = 1977 RW4 = 1977 TF4 = A908 SB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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