+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   430 Hybris (A897 YA) Classification: Main-belt Asteroid          SPK-ID: 2000430 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2529599967648984 3.7938e-08   a 2.848553562009708 1.1476e-08 au q 2.127983462179093 1.0745e-07 au i 14.58326705896847 4.4716e-06 deg node 249.4330965408328 1.4351e-05 deg peri 179.0720939376598 1.5914e-05 deg M 200.7170388202011 8.4656e-06 deg tp 2459777.465673564927 (2022-Jul-16.96567356) 4.434e-05 TDB period 1756.042456842821 4.81 1.0612e-05 2.905e-08 d yr n .2050064328440225 1.2389e-09 deg/d Q 3.569123661840323 1.4379e-08 au   Orbit Determination Parameters    # obs. used (total)      2261      data-arc span      31066 days (85.05 yr)      first obs. used      1935-09-22      last obs. used      2020-10-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38911      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:29:40   Additional Information  Earth MOID = 1.14223 au   Jupiter MOID = 1.75484 au   T_jup = 3.212  [ 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 11.1   n/a MPO384747   diameter diameter 31.702 km 0.661 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 7.205 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2003) Minor Planet Bull. 30, 1-2.] [Hanus, J.; Delbo, M.; Durech, J.; Ali-Lagoa, V. (2018) Icarus 309, 297-337.] geometric albedo albedo 0.054   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   430 Hybris (A897 YA)          Discovered 1897-Dec-18 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A897 YA = 1952 HO2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-28 18:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin