+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1902 Shaposhnikov (1972 HU) Classification: Outer Main-belt Asteroid          SPK-ID: 2001902 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2222081728098575 3.4479e-08   a 3.974077469756804 2.7971e-08 au q 3.091004976597322 1.4498e-07 au i 12.4872393035429 4.3015e-06 deg node 59.31615766063525 1.8101e-05 deg peri 267.5437028083713 2.1035e-05 deg M 311.610134942587 1.4059e-05 deg tp 2459389.459900548406 (2021-Jun-23.95990055) 0.00011551 TDB period 2893.696108292314 7.92 3.055e-05 8.364e-08 d yr n .1244083644334202 1.3134e-09 deg/d Q 4.857149962916284 3.4186e-08 au   Orbit Determination Parameters    # obs. used (total)      3038      data-arc span      29293 days (80.20 yr)      first obs. used      1940-04-05      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43933      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:38:36   Additional Information  Earth MOID = 2.11457 au   Jupiter MOID = .991757 au   T_jup = 2.973  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.3   n/a MPO473790 IRAS observations used: 6 diameter diameter 83.430 km 0.825 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)   rotation period rot_per 20.977 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Gonano, M.; Di Martino, M.; Mottola, S.; Neukum, G. (1991) Adv. Space Res. 11, no. 12, 197-200.] [Dahlgren, M.; Lahulla, J.F.; Lagerkvist, C.-I.; Lagerros, J.; et al. (1998) Icarus 133, 247-285.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Warner, B.D.; Stephens, R.D (2017) Minor Planet Bull. 44, 220-222.] [Warner, B.D.; Stephens, R.D. (2018) Minor Planet Bull. 45, 262-265.] [Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46-4, submitted. (Hildas)] geometric albedo albedo 0.040   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)   B-V BV 0.729   0.111 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.04, mean=6.51, max.=7.99) deg. U-B UB 0.254   0.088 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.04, mean=6.51, max.=7.99) deg. Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices 1902 Shaposhnikov (1972 HU)          Discovered 1972-Apr-18 by Smirnova, T. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1972 HU = 1940 GK = 1941 MC = 1950 TD4 = 1951 WY1 = 1951 YD = 1958 TP1 = 1958 VB = 1959 XA = 1972 JA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-13 06:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin