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2046 Leningrad (1968 UD1)
Classification: Main-belt Asteroid          SPK-ID: 2002046
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802455730497491 3.6619e-08  
a 3.157864800232119 1.4688e-08 au
q 2.588673649700649 1.1775e-07 au
i 2.735061112541567 3.2282e-06 deg
node 73.56141783657026 8.574e-05 deg
peri 284.3333874063304 8.6134e-05 deg
M 139.5655434685715 9.7298e-06 deg
tp 2458405.870954131404
(2018-Oct-14.37095413)
5.4061e-05 TDB
period 2049.692563101102
5.61
1.4301e-05
3.915e-08
d
yr
n .1756360961057177 1.2254e-09 deg/d
Q 3.727055950763589 1.7336e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3091  
   data-arc span      33319 days (91.22 yr)  
   first obs. used      1929-10-29  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43302  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:00:03  

Additional Information
 Earth MOID = 1.58496 au 
 Jupiter MOID = 1.7263 au 
 T_jup = 3.179 
[ 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 11.56   n/a E2021B10  
diameter diameter 23.968 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.296 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:
[Simpson, G.; Chong, E.; Gerhardt, M.; Gorsky, S.; et al. (2013) Minor Planet Bull. 146-151.]
geometric albedo albedo 0.085   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2046 Leningrad           Discovered 1968 Oct. 22 by T. M. Smirnova at the Crimean Astrophysical Observatory.
Named for one of the largest industrial, cultural and scientific centers of the U.S.S.R.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5282Last Updated: 2007-10-23

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Alternate Designations
 1968 UD1 = 1929 VK = 1934 RK = 1940 UF = 1955 HN = 1957 YV = 1973 QS = 1973 SH3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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