+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   779 Nina (A914 BH) Classification: Main-belt Asteroid          SPK-ID: 2000779 [ 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 72 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2277994178094218 4.4342e-08   a 2.663909573724142 8.1109e-09 au q 2.057072523732837 1.2053e-07 au i 14.58218412146584 4.923e-06 deg node 283.7370685846914 1.6885e-05 deg peri 49.12553657145855 1.9209e-05 deg M 301.4965918631111 1.0117e-05 deg tp 2459258.581165223982 (2021-Feb-13.08116522) 4.5124e-05 TDB period 1588.099265315283 4.35 7.2531e-06 1.986e-08 d yr n .2266860818228071 1.0353e-09 deg/d Q 3.270746623715446 9.9586e-09 au   Orbit Determination Parameters    # obs. used (total)      2356      data-arc span      38066 days (104.22 yr)      first obs. used      1916-07-29      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .31842      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:25:52   Additional Information  Earth MOID = 1.07541 au   Jupiter MOID = 2.16354 au   T_jup = 3.302  [ 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 7.9   n/a MPO435702   diameter diameter 80.572 km 2.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 11.186 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.] [Warner, B.D. (2009) Minor Planet Bull. 36, 109-116.] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.157   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 779 Nina (A914 BH)          Discovered 1914-Jan-25 by Neujmin, G. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A914 BH = A908 YB = A912 TE  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-02 00:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin