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JPL Small-Body Database Browser
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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1800862448423085 3.8064e-08  
a 3.157995544097826 1.5591e-08 au
q 2.589283985332506 1.2337e-07 au
i 2.735219773963906 3.4276e-06 deg
node 73.56780548366802 8.8726e-05 deg
peri 284.3144514340191 8.9145e-05 deg
M 104.4706021188918 9.7837e-06 deg
tp 2458405.650236557329
(2018-Oct-14.15023656)
5.4912e-05 TDB
period 2049.819858371781
5.61
1.518e-05
4.156e-08
d
yr
n .1756251889792678 1.3006e-09 deg/d
Q 3.726707102863147 1.8399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2771  
   data-arc span      32939 days (90.18 yr)  
   first obs. used      1929-10-29  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 18:23:10  

Additional Information
 Earth MOID = 1.58722 au 
 Jupiter MOID = 1.72576 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 11.5   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1909-Jun-10 15:45 00:02 Jupiter 1.71715500088652 1.71715461598349 1.71715538578916 1.56316194733678 1.20703502981027 2418468.156513727 2.20476310654395 164.683720677203 59.3042764269688 -82.8385133123076 2441146.79428192 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
1919-Dec-23 02:32 00:02 Jupiter 1.78229180438093 1.78229120119759 1.78229240756438 2.0111724635105 1.75907014271713 2422315.605795769 1.98701624413 84.1319849237555 12.2022972055689 -74.2099769949171 2278048.11903592 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
1994-Mar-21 02:02 < 00:01 Jupiter 1.93536159046187 1.93536119817734 1.93536198274628 2.41707684341447 2.22866519841295 2449432.584732993 0.526170170340933 48.3163278666757 7.39354441904936 88.6338612911959 3131112.50708145 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2004-Oct-04 08:02 < 00:01 Jupiter 1.73915259565159 1.73915223441917 1.73915295688391 1.62256985949136 1.28789342251326 2453282.834674138 0.289216997134046 89.9416980682468 47.4512797317536 -76.9258508188405 2593668.99336497 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2015-Apr-20 14:51 < 00:01 Jupiter 1.75878279760782 1.7587824496041 1.75878314561133 1.8273800426899 1.54146881198639 2457133.118883030 0.197322647642808 50.6982804011104 19.5422881306366 -77.6885937904573 2869841.39327573 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2025-Oct-25 06:43 < 00:01 Jupiter 1.97121827999943 1.97121790891048 1.97121865108838 3.12599309387602 2.985371492423 2460973.779823442 0.361196850149042 37.3486713872538 12.4421866158581 -87.6020268867107 3706686.80183841 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2089-Jul-15 05:39 00:02 Jupiter 1.98285627455658 1.98285562442774 1.98285692468518 2.68534584509927 2.52125691999641 2484247.735579366 1.50764934679989 45.1111400005485 14.1562602847331 -88.511294288157 1861797.24806139 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2100-Jan-30 19:26 00:02 Jupiter 1.76391917858337 1.76391864226652 1.76391971489972 1.71445067679801 1.40675304604335 2488099.309673055 1.76610606873282 94.2103307355267 45.3615016849899 79.5293435484986 1833270.42672273 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2110-Aug-18 20:50 00:02 Jupiter 1.734875207391 1.73487478463853 1.73487563014457 1.6814964796884 1.36050187302779 2491951.367882141 2.06000218293989 147.402838321802 33.2623332919281 -76.5640725579832 2832971.52354352 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2121-Feb-24 06:26 00:02 Jupiter 1.92132068898335 1.92131981652104 1.92132156144544 2.74829424974953 2.58290779038893 2495793.768319061 2.352316350088 54.9729853400069 14.6556060116369 78.8227759118309 1726311.32834424 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23
2195-May-30 00:21 00:04 Jupiter 1.80307738224539 1.80307634476034 1.80307841972952 1.87059075982649 1.59986872451454 2522916.514527100 3.76870426083237 103.374548109638 31.0384882690737 71.7273908168266 1301610.3104601 T 33 CATAB v2.0f-lin.ifort 2020-Jan-28 18:23:43 2020-Jan-28 18:23

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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