+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   434 Hungaria (A898 RB) Classification: Inner Main-belt Asteroid          SPK-ID: 2000434 [ 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 74 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07383879928429064 3.4412e-08   a 1.944392256126707 2.7965e-09 au q 1.800820666596638 6.6272e-08 au i 22.50907354420531 4.2749e-06 deg node 175.3048949021371 8.1038e-06 deg peri 123.86849786 2.6706e-05 deg M 10.04527214689669 2.5131e-05 deg tp 2458972.866655113731 (2020-May-03.36665511) 6.9125e-05 TDB period 990.3170380635319 2.71 2.1365e-06 5.849e-09 d yr n .3635199498374225 7.8425e-10 deg/d Q 2.087963845656776 3.003e-09 au   Orbit Determination Parameters    # obs. used (total)      3122      data-arc span      44620 days (122.16 yr)      first obs. used      1898-09-11      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .35342      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:53:35   Additional Information  Earth MOID = .834577 au   Jupiter MOID = 3.07265 au   T_jup = 3.802  [ 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 11.2   n/a MPO473767   diameter diameter 8.934 km 0.748 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 26.521 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J. (2006) IAU 2006, poster paper.] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2010) Minor Planet Bull. 37, 24-27.] [Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.] [Warner, B.D. (2014) Minor Planet Bull. 41, 144-155.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.726   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.717   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=8.90, mean=18.56, max.=28.25) deg. U-B UB 0.247   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=8.90, mean=16.94, max.=24.74) deg. Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B Xe   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) 434 Hungaria (A898 RB)          Discovered 1898-Sep-11 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 17:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin