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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 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

[ 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 1.7171550009503 1.71715461864045 1.71715538325985 1.56316195951521 1.20703504559703 2418468.156489660 2.11684060199215 156.063762021772 58.4716745575833 -83.3045531742884 2471334.99498295 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
1919-Dec-23 02:32 00:02 Jupiter 1.78229180835274 1.78229121866278 1.7822923980428 2.01117248934081 1.75907017285139 2422315.605774145 1.91136737113476 80.7081917559191 11.5705963099074 -74.1619622058254 2376155.41717148 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
1994-Mar-21 02:02 < 00:01 Jupiter 1.93536159676568 1.93536121109687 1.93536198243438 2.41707692674316 2.22866528942588 2449432.584736946 0.51803086403701 46.3203481852818 7.25491760375789 88.9568074885329 3204705.40969318 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2004-Oct-04 08:02 < 00:01 Jupiter 1.73915260040075 1.73915224988202 1.73915295091939 1.62256988059095 1.28789345012852 2453282.834673231 0.288594349264671 85.0497257165756 45.1342991522505 -75.3743103400674 2712088.62308065 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2015-Apr-20 14:51 < 00:01 Jupiter 1.75878279403288 1.75878245304073 1.75878313502484 1.82737997474806 1.54146873080767 2457133.118899002 0.177746281579751 47.3376851602296 19.0387212731248 -76.4399711538264 2929700.32469453 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2025-Oct-25 06:43 < 00:01 Jupiter 1.97121826876985 1.97121793190726 1.97121860563244 3.1259930177742 2.98537141191657 2460973.779832195 0.320565463693858 35.3330718239524 11.2647977726501 -87.3358086667401 4060215.20392006 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2089-Jul-15 05:39 00:01 Jupiter 1.98285629362382 1.98285571067288 1.98285687657453 2.68534600626675 2.52125709328225 2484247.735608372 1.41393359969996 44.2833714572003 12.7061380617513 -88.6970615488347 2071937.46890079 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2100-Jan-30 19:26 00:02 Jupiter 1.76391919142204 1.76391870204608 1.76391968079761 1.71445076385852 1.40675315463102 2488099.309707990 1.65782866288962 89.3172077127743 42.5760016991057 81.3834066606091 1982499.76011781 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2110-Aug-18 20:50 00:02 Jupiter 1.73487520049534 1.73487478864094 1.73487561235062 1.68149643135608 1.36050181186564 2491951.367918704 1.9367854495797 138.559504499928 32.4464530016196 -75.8917896422519 2901767.18714501 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2121-Feb-24 06:26 00:02 Jupiter 1.92132066540503 1.92131986401665 1.9213214667932 2.74829406335121 2.58290758996073 2495793.768359649 2.21298219794338 51.2229043486135 13.4527977893963 79.3292076875917 1864948.78353299 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00
2195-May-30 00:21 00:04 Jupiter 1.80307740944512 1.80307645592279 1.80307836296672 1.87059087002733 1.59986885779245 2522916.514583456 3.56196472716046 98.5909087473448 29.23020588148 72.7207729990382 1408785.62256678 T 40 CATAB v2.0f-lin.ifort 2021-Feb-24 01:00:11 2021-Feb-24 01:00

Alternate Designations
 1968 UD1 = 1929 VK = 1934 RK = 1940 UF = 1955 HN = 1957 YV = 1973 QS = 1973 SH3 
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