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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804419624595184 2.016e-08  
a 3.157436536889586 1.3881e-08 au
q 2.587702491831844 6.5815e-08 au
i 2.735043847028338 3.6695e-07 deg
node 73.55465011038372 1.8836e-05 deg
peri 284.3580063979506 2.0873e-05 deg
M 173.9603283865994 8.3664e-06 deg
tp 2458406.242614347210
(2018-Oct-14.74261435)
4.4827e-05 TDB
period 2049.27561439615
5.61
1.3514e-05
3.7e-08
d
yr
n .1756718312905312 1.1585e-09 deg/d
Q 3.727170581947329 1.6386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3485  
   data-arc span      33484 days (91.67 yr)  
   first obs. used      1929-10-29  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41583  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:18:36  

Additional Information
 Earth MOID = 1.58482 au 
 Jupiter MOID = 1.72666 au 
 T_jup = 3.179 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457068.5 (2015-Feb-15.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1746301097910098 1.9804e-08  
q 2.615535434263246 6.4165e-08 au
tp 2456342.334314730987
(2013-Feb-18.83431473)
4.3243e-05 TDB
node 73.96710929083184 1.8826e-05 deg
peri 282.796623460656 2.097e-05 deg
i 2.73437657895185 3.6527e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3485  
   data-arc span      33484 days (91.67 yr)  
   first obs. used      1929-10-29  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41583  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:18:36  

Additional Information
 Jupiter MOID = 1.72666 au 
 T_jup = 3.179 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.921943138341277E-16 -1.249679981292957E-15 6.374189581920641E-14 1.464600784117678E-13 -1.578418271421032E-13 2.694760346179614E-15
q -1.249679981292957E-15 4.117204010840193E-15 -1.670722259773972E-13 -4.558023819653378E-13 5.051196614559442E-13 -8.259672885654528E-15
tp 6.374189581920641E-14 -1.670722259773972E-13 1.869927911801007E-9 -1.200885694271092E-10 3.754687528626114E-10 -6.371656113435304E-13
node 1.464600784117678E-13 -4.558023819653378E-13 -1.200885694271092E-10 3.544276034629965E-10 -3.786330139445358E-10 -1.625439633082063E-12
peri -1.578418271421032E-13 5.051196614559442E-13 3.754687528626114E-10 -3.786330139445358E-10 4.39754981956274E-10 1.360253166221137E-12
i 2.694760346179614E-15 -8.259672885654528E-15 -6.371656113435304E-13 -1.625439633082063E-12 1.360253166221137E-12 1.334191245163675E-13

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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