+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1897 Hind (1971 UE1) Classification: Main-belt Asteroid          SPK-ID: 2001897 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1420434842534085 3.0955e-08   a 2.283568853795939 5.6862e-09 au q 1.959202777270201 7.1144e-08 au i 4.053257994895648 2.8403e-06 deg node 63.41668214828415 4.6684e-05 deg peri 269.0496183806392 4.7702e-05 deg M 138.2371760924822 9.6535e-06 deg tp 2458716.503806620353 (2019-Aug-21.00380662) 3.3788e-05 TDB period 1260.432501168177 3.45 4.7078e-06 1.289e-08 d yr n .2856162465394613 1.0668e-09 deg/d Q 2.607934930321677 6.4939e-09 au   Orbit Determination Parameters    # obs. used (total)      2823      data-arc span      23689 days (64.86 yr)      first obs. used      1956-03-16      last obs. used      2021-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41495      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:58:57   Additional Information  Earth MOID = .951986 au   Jupiter MOID = 2.72728 au   T_jup = 3.587  [ 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 13.51   n/a E2021B10   diameter diameter 5.007 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 2.6336 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: [Hills, K. (2013) Minor Planet Bull. 40, 12-13.] geometric albedo albedo 0.307   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   1897 Hind (1971 UE1)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1971 UE1 = 1957 SG  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 14:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin