+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2151 Hadwiger (1977 VX) Classification: Main-belt Asteroid          SPK-ID: 2002151 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05661011109361938 3.0131e-08   a 2.560708199875101 9.7097e-09 au q 2.415746224201829 8.0136e-08 au i 15.48654447956324 5.3893e-06 deg node 27.9145882652554 1.2144e-05 deg peri 86.14409542700891 7.0101e-05 deg M 106.7297534285583 6.5017e-05 deg tp 2458756.767160943668 (2019-Sep-30.26716094) 0.00027111 TDB period 1496.713118214102 4.10 8.5128e-06 2.331e-08 d yr n .2405270559995872 1.368e-09 deg/d Q 2.705670175548373 1.0259e-08 au   Orbit Determination Parameters    # obs. used (total)      2961      data-arc span      31728 days (86.87 yr)      first obs. used      1934-03-07      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .3719      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:05:08   Additional Information  Earth MOID = 1.48926 au   Jupiter MOID = 2.37285 au   T_jup = 3.382  [ 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 11.07   n/a E2021B10   diameter diameter 13.767 km 0.540 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 5.872 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Sada, P.V.; Canizales, E.D.; Armada, E.M. (2005) Minor Planet Bull. 32, 73-75.] [Kim, M.-J.; Choi, Y.-J.; Moon, H.-K.; Byun, Y.-I.; et al. (2014) Astron. J. 147, A56.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.446   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   Tholen spectral type spec_T CSU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 2151 Hadwiger (1977 VX)          Discovered 1977-Nov-03 by Wild, P. at Zimmerwald Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1977 VX = 1932 UC = 1940 SB = 1963 FF = 1969 UU2 = 1973 SQ6 = 1975 EA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 13:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin