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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 
[ 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 1.71715500136686 1.71715461846287 1.71715538427056 1.56316195193876 1.20703503588434 2418468.156512754 2.15334715315173 158.877707086653 58.5337797327021 -83.4218724773987 2469503.26274658 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
1919-Dec-23 02:32 00:02 Jupiter 1.78229180500471 1.78229121445968 1.78229239554974 2.01117244521025 1.75907012188872 2422315.605797741 1.94256136913864 82.0193106550279 11.8185784212016 -74.3118261680964 2336109.18156249 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
1994-Mar-21 02:02 < 00:01 Jupiter 1.93536159124024 1.93536120026948 1.93536198221088 2.41707687731313 2.22866523525638 2449432.584736983 0.519871882178214 47.9769791755106 7.33240037282345 88.6847265450471 3155171.46611445 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2004-Oct-04 08:02 < 00:01 Jupiter 1.73915259626652 1.73915224363695 1.739152948896 1.62256987488982 1.28789344204693 2453282.834679180 0.288802498601162 87.2984711922022 45.9185060551645 -76.7222424386708 2671569.30091491 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2015-Apr-20 14:51 < 00:01 Jupiter 1.75878279764011 1.75878245117162 1.75878314410841 1.82738004611091 1.54146881604767 2457133.118882522 0.190195305200243 49.2586785948421 19.1440037824481 -77.0476555295149 2902857.01936323 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2025-Oct-25 06:43 < 00:01 Jupiter 1.9712182794939 1.97121791730335 1.97121864168445 3.12599308417958 2.98537148223292 2460973.779824240 0.341375474932943 36.0479329106858 12.1121038036001 -87.5402636301235 3780468.88318809 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2089-Jul-15 05:39 00:01 Jupiter 1.98285627456856 1.98285565293093 1.98285689620597 2.68534596255228 2.52125704509454 2484247.735592334 1.45929648096045 45.0373764207639 13.6237975780712 -88.660279719291 1953223.51141148 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2100-Jan-30 19:26 00:02 Jupiter 1.76391917863076 1.76391867091914 1.76391968634189 1.71445069076287 1.40675306307189 2488099.309675086 1.70896658352737 92.5567399153383 43.3689653756025 80.5436104192544 1929946.25492704 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2110-Aug-18 20:50 00:02 Jupiter 1.73487520774259 1.73487478577264 1.73487562971354 1.68149646472087 1.36050185460157 2491951.367886995 1.994368318057 143.757079652905 32.5937678375109 -75.972348662489 2879534.02335367 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2121-Feb-24 06:26 00:02 Jupiter 1.92132068951539 1.92131984543879 1.92132153359178 2.74829425993375 2.58290780127253 2495793.768316934 2.27696225206599 53.0448290472927 14.1744369144412 78.8987280081887 1776705.64383615 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13
2195-May-30 00:21 00:04 Jupiter 1.80307738256989 1.80307639173795 1.80307837340112 1.87059076843131 1.59986873462828 2522916.514527585 3.65673101730448 101.67932521792 29.8648909871474 72.4732650686806 1362367.15026272 T 36 CATAB v2.0f-lin.ifort 2020-Nov-13 04:13:14 2020-Nov-13 04:13

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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