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2127 Tanya (1971 KB1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2002127
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03203626126268962 3.5001e-08  
a 3.212424984549562 1.8788e-08 au
q 3.109510898457741 1.0867e-07 au
i 13.09365415059514 3.9308e-06 deg
node 106.380087471976 1.8324e-05 deg
peri 187.0918409483704 7.1079e-05 deg
M 152.8938250731344 6.9446e-05 deg
tp 2458107.327456007632
(2017-Dec-19.82745601)
0.00040475 TDB
period 2103.041870287748
5.76
1.8449e-05
5.051e-08
d
yr
n .1711806146544972 1.5017e-09 deg/d
Q 3.315339070641384 1.939e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3087  
   data-arc span      24397 days (66.80 yr)  
   first obs. used      1953-04-14  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39477  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:13:16  

Additional Information
 Earth MOID = 2.09355 au 
 Jupiter MOID = 1.84184 au 
 T_jup = 3.150 
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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 11.1   n/a MPO458850  
diameter diameter 37.736 km 0.197 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.864 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.048   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2127 Tanya           Discovered 1971 May 29 by L. I. Chernykh at the Crimean Astrophysical Observatory.
Named in memory of Tanya Savicheva, a 12-year-old schoolgirl who perished during the 1941-1944 blockade of Leningrad. In her diary she made a record as her parents and other relatives died, one by one. Her last note was "... all the Savichev's have died, Tanya is left alone."
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5283Last Updated: 2007-10-23

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Alternate Designations
 1971 KB1 = 1953 GH1 
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