+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   184 Dejopeja (A878 DA) Classification: Main-belt Asteroid          SPK-ID: 2000184 [ 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 87 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06593039687648225 3.8781e-08   a 3.186591877081145 1.3182e-08 au q 2.97649860994181 1.2341e-07 au i 1.143319759756728 4.2766e-06 deg node 331.5618715181206 0.00019574 deg peri 210.3939809543493 0.00019804 deg M .9149847172227549 2.987e-05 deg tp 2458995.219203481419 (2020-May-25.71920348) 0.00017239 TDB period 2077.725136720897 5.69 1.2892e-05 3.53e-08 d yr n .1732664218367972 1.0751e-09 deg/d Q 3.396685144220479 1.4051e-08 au   Orbit Determination Parameters    # obs. used (total)      3268      data-arc span      46713 days (127.89 yr)      first obs. used      1892-09-30      last obs. used      2020-08-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43711      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:32:27   Additional Information  Earth MOID = 1.979 au   Jupiter MOID = 1.56642 au   T_jup = 3.194  [ 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 8.4   n/a MPO502154 IRAS observations used: 12 diameter diameter 62.483 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.4416 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.] [Gil-Hutton, R. (1995) Rev. Mexicana Astron. Astrof. 31, 19-21.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J. (2006) IAU 2006, poster paper.] [Marciniak, A.; Michalowski, T.; Kaasalainen, M.; Durech, J.; et al. (2007) Astron. Astrophys. 473, 633-639.] [Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.] [Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.] [Shevchenko, V.G.; Velichko, F.P.; Checha, V.A.; Krugly, Y.N. (2014) Minor Planet Bull. 41, 195-198.] [Lang, K.; Jacobsen, J.; Kristensen, L.H.; Larsen, F.R. (2018) Minor Planet Bull. 45, 197-198.] geometric albedo albedo 0.215   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.699   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=.19, mean=7.02, max.=14.03) deg. U-B UB 0.227   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=.19, mean=7.02, max.=14.03) deg. Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices 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) 184 Dejopeja (A878 DA)          Discovered 1878-Feb-28 by Palisa, J. at Pola Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A878 DA = 1959 LL = A903 QB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-02 01:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin