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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03195394881602413 1.4558e-08  
a 3.212782577291071 1.5377e-08 au
q 3.110121487259298 5.281e-08 au
i 13.09311401458828 3.1361e-07 deg
node 106.3800410740217 6.1735e-07 deg
peri 187.3807284206923 3.8394e-05 deg
M 186.8211754415672 4.07e-05 deg
tp 2460212.342035663788
(2023-Sep-24.84203566)
0.0002389 TDB
period 2103.393031842969
5.76
1.5101e-05
4.134e-08
d
yr
n .1711520360436737 1.2288e-09 deg/d
Q 3.315443667322844 1.5869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3680  
   data-arc span      24812 days (67.93 yr)  
   first obs. used      1953-04-14  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37196  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:00:07  

Additional Information
 Earth MOID = 2.09225 au 
 Jupiter MOID = 1.84116 au 
 T_jup = 3.149 
[ show covariance matrix ]

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 11.11   n/a E2021B10  
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 7.854 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:
[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.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

[ show close-approach data ]
Alternate Designations
 1971 KB1 = 1953 GH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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