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26922 Samara (1996 TD40)
Classification: Main-belt Asteroid          SPK-ID: 2026922
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403777413267655 4.3511e-08  
a 3.101384645815171 1.6277e-08 au
q 2.666019274250127 1.328e-07 au
i 2.37813626103559 3.7642e-06 deg
node 117.5475162099522 9.7478e-05 deg
peri 227.7502130409672 9.8274e-05 deg
M 166.4278727179451 1.4363e-05 deg
tp 2458278.235617075370
(2018-Jun-08.73561708)
7.7371e-05 TDB
period 1994.949358125558
5.46
1.5706e-05
4.3e-08
d
yr
n .1804557085791159 1.4207e-09 deg/d
Q 3.536750017380216 1.8562e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1712  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-09-10  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:29:07  

Additional Information
 Earth MOID = 1.65757 au 
 Jupiter MOID = 1.86955 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456998.5 (2014-Dec-07.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1365492145988557 4.2721e-08  
q 2.683881903251605 1.2896e-07 au
tp 2456267.954943793468
(2012-Dec-06.45494379)
7.7631e-05 TDB
node 117.6268939353674 9.701e-05 deg
peri 225.9412106118938 9.7894e-05 deg
i 2.379267541289083 3.772e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1712  
   data-arc span      8952 days (24.51 yr)  
   first obs. used      1996-09-10  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:29:07  

Additional Information
 Jupiter MOID = 1.86955 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.825065528438326E-15 -5.476981679725005E-15 7.957380169762541E-13 -7.182417584640824E-16 1.02996893917375E-13 -1.652661253677854E-16
q -5.476981679725005E-15 1.663011138594208E-14 -2.323109442199678E-12 1.269168465233064E-15 -2.854283797071055E-13 5.239886700880614E-16
tp 7.957380169762541E-13 -2.323109442199678E-12 6.026500487665421E-9 -1.194925113619343E-11 1.04104659083664E-9 -5.824132223267662E-13
node -7.182417584640824E-16 1.269168465233064E-15 -1.194925113619343E-11 9.410942993719442E-9 -9.404939205000395E-9 7.393178239224065E-11
peri 1.02996893917375E-13 -2.854283797071055E-13 1.04104659083664E-9 -9.404939205000395E-9 9.583152060091753E-9 -7.395728121312453E-11
i -1.652661253677854E-16 5.239886700880614E-16 -5.824132223267662E-13 7.393178239224065E-11 -7.395728121312453E-11 1.422812282326748E-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 13.62   n/a E2021B10  
diameter diameter 10.686 km 0.318 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.16 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:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.089   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

26922 Samara           Discovered 1996 Oct. 8 by E. W. Elst at the European Southern Observatory.
The 580-km Samara river, with its source in the foothills of the Urals, flows northwest and joins the Volga at the city of Samara.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

[ show close-approach data ]
Alternate Designations
 1996 TD40 = 1999 AT25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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