+ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2529599962625279 3.7932e-08   a 2.848553561881311 1.1475e-08 au q 2.127983463514204 1.0744e-07 au i 14.58326708754431 4.4707e-06 deg node 249.4330964340292 1.4347e-05 deg peri 179.0720941625582 1.5909e-05 deg M 200.7170387814556 8.4654e-06 deg tp 2459777.465673701391 (2022-Jul-16.96567370) 4.4339e-05 TDB period 1756.042456724092 4.81 1.0611e-05 2.905e-08 d yr n .2050064328578833 1.2388e-09 deg/d Q 3.569123660248417 1.4378e-08 au   Orbit Determination Parameters    # obs. used (total)      2265      data-arc span      31096 days (85.14 yr)      first obs. used      1935-09-22      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38913      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:53:34   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 11.15   n/a E2021B10   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. 2020-October); 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.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] 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 ] 2021-Mar-02 09:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin