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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1800862446418982 3.6839e-08  
a 3.157995544159971 1.5144e-08 au
q 2.589283986016354 1.188e-07 au
i 2.735219752057028 3.3875e-06 deg
node 73.56780405850691 8.6252e-05 deg
peri 284.3144528107193 8.6683e-05 deg
M 104.470602167574 9.7688e-06 deg
tp 2458405.650236262577
(2018-Oct-14.15023626)
5.485e-05 TDB
period 2049.819858432288
5.61
1.4745e-05
4.037e-08
d
yr
n .1756251889740837 1.2633e-09 deg/d
Q 3.726707102303588 1.7871e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2955  
   data-arc span      33239 days (91.00 yr)  
   first obs. used      1929-10-29  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44006  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:06  

Additional Information
 Earth MOID = 1.58722 au 
 Jupiter MOID = 1.72576 au 
 T_jup = 3.179 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456565.5 (2013-Sep-30.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736136370710822 3.5786e-08  
q 2.611856288923013 1.1385e-07 au
tp 2456337.870957932692
(2013-Feb-14.37095793)
5.8818e-05 TDB
node 74.09955532822443 8.5727e-05 deg
peri 281.7243279731316 8.6262e-05 deg
i 2.741216241373049 3.3936e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2955  
   data-arc span      33239 days (91.00 yr)  
   first obs. used      1929-10-29  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44006  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:06  

Additional Information
 Jupiter MOID = 1.72576 au 
 T_jup = 3.179 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.280639089386634E-15 -4.050263420288696E-15 6.392415136519267E-14 -3.418469524900406E-15 -3.868255025305425E-15 3.627193220812588E-16
q -4.050263420288696E-15 1.296188503689231E-14 -2.469938804380071E-13 9.601360262099783E-15 9.051738037563863E-15 -9.488884313108918E-16
tp 6.392415136519267E-14 -2.469938804380071E-13 3.459615580019675E-9 -8.523198397491353E-12 5.982277747800365E-10 1.903274468278083E-13
node -3.418469524900406E-15 9.601360262099783E-15 -8.523198397491353E-12 7.349035688781942E-9 -7.34123286615906E-9 -1.383807870509509E-11
peri -3.868255025305425E-15 9.051738037563863E-15 5.982277747800365E-10 -7.34123286615906E-9 7.441056937469017E-9 1.382735379586137E-11
i 3.627193220812588E-16 -9.488884313108918E-16 1.903274468278083E-13 -1.383807870509509E-11 1.382735379586137E-11 1.151620944089206E-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 11.5   n/a MPO452189  
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. 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:
[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

[ show close-approach data ]
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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