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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1800862447010269 3.7435e-08  
a 3.157995544116309 1.5377e-08 au
q 2.589283985793827 1.2104e-07 au
i 2.73521989080063 3.4157e-06 deg
node 73.56779917220804 8.7448e-05 deg
peri 284.3144577289564 8.7874e-05 deg
M 104.4706021159145 9.7762e-06 deg
tp 2458405.650236569059
(2018-Oct-14.15023657)
5.4893e-05 TDB
period 2049.819858389777
5.61
1.4971e-05
4.099e-08
d
yr
n .1756251889777259 1.2827e-09 deg/d
Q 3.726707102438792 1.8146e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2814  
   data-arc span      32968 days (90.26 yr)  
   first obs. used      1929-10-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44563  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:11:35  

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 1.71715500079661 1.71715461694806 1.71715538464488 1.56316195881955 1.20703504465955 2418468.156515139 2.17884100633861 161.76359686649 58.9051298131797 -83.1460470275354 2455772.81474233 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
1919-Dec-23 02:32 00:02 Jupiter 1.78229180790294 1.78229121168984 1.78229240411616 2.0111724985923 1.75907018336058 2422315.605786144 1.96455892426483 83.0832346474577 12.0167851049123 -74.278914489561 2306387.08759137 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
1994-Mar-21 02:02 < 00:01 Jupiter 1.93536159025658 1.93536119834313 1.93536198216993 2.41707690675395 2.22866526708632 2449432.584739944 0.522801098356134 48.2130203378742 7.36330744605486 88.6379501363975 3140254.36217271 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2004-Oct-04 08:02 < 00:01 Jupiter 1.73915259623416 1.73915223933514 1.73915295313308 1.6225698778216 1.28789344573353 2453282.834677331 0.288967283889315 88.7170330205168 46.7074751801187 -76.9257173384922 2630911.4707228 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2015-Apr-20 14:51 < 00:01 Jupiter 1.75878279887808 1.75878245168196 1.758783146074 1.82738001245112 1.54146877636458 2457133.118889824 0.194173123904363 50.0738755514078 19.3317691410056 -77.418718392522 2887396.37944049 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2025-Oct-25 06:43 < 00:01 Jupiter 1.97121828082268 1.97121791319004 1.9712186484552 3.12599308548531 2.98537148369718 2460973.779824384 0.351752517378308 36.7236131310146 12.3107667625124 -87.5818374080124 3733479.01121359 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2089-Jul-15 05:39 00:01 Jupiter 1.9828562741083 1.98285563702885 1.98285691118752 2.68534593783941 2.52125701873398 2484247.735589112 1.48397713477109 45.07575357821 13.9215921204462 -88.5912864783022 1903330.80331896 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2100-Jan-30 19:26 00:02 Jupiter 1.76391917852364 1.76391865619025 1.76391970085652 1.71445070244939 1.40675307729386 2488099.309676166 1.73802935210137 93.5394137363402 44.3666493622243 80.0243862383745 1879844.38004794 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2110-Aug-18 20:50 00:02 Jupiter 1.73487520865968 1.73487478602554 1.7348756312948 1.68149644926407 1.36050183568762 2491951.367893489 2.02768537387186 145.718423572663 32.9177674578063 -76.2684350163161 2856430.99895601 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2121-Feb-24 06:26 00:02 Jupiter 1.92132069065857 1.92131983119584 1.9213215501212 2.74829432090922 2.58290786625387 2495793.768311067 2.31512021388099 54.0664741970906 14.4433208763032 78.8574023790763 1747907.9640552 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11
2195-May-30 00:21 00:04 Jupiter 1.80307738265425 1.80307636790934 1.80307839739834 1.87059076374546 1.59986872916324 2522916.514525361 3.71331137109952 102.633012498741 30.4620190346038 72.1095852052198 1330238.89933693 T 34 CATAB v2.0f-lin.ifort 2020-Feb-22 16:11:50 2020-Feb-22 16:11

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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