+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   373 Melusina (A893 RA) Classification: Main-belt Asteroid          SPK-ID: 2000373 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 52 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1379382969822174 2.2791e-08   a 3.120022524623382 1.0306e-08 au q 2.689651931030674 6.8948e-08 au i 15.37840570183614 9.5574e-07 deg node 3.64459723540746 1.3272e-06 deg peri 348.698075919657 7.2921e-06 deg M 52.67239549090122 5.7199e-06 deg tp 2458905.979458519837 (2020-Feb-26.47945852) 3.1658e-05 TDB period 2012.959424850427 5.51 9.9741e-06 2.731e-08 d yr n .1788411607088155 8.8615e-10 deg/d Q 3.550393118216089 1.1728e-08 au   Orbit Determination Parameters    # obs. used (total)      3411      data-arc span      43437 days (118.92 yr)      first obs. used      1902-04-04      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .39325      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:46:58   Additional Information  Earth MOID = 1.68512 au   Jupiter MOID = 1.90076 au   T_jup = 3.147  [ 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 9.18   n/a E2021B10 IRAS observations used: 18 diameter diameter 98.695 km 0.947 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 12.97 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] geometric albedo albedo 0.040   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.669   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.06, mean=14.28, max.=21.50) deg. U-B UB 0.371   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.06, mean=14.28, max.=21.50) deg. Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 373 Melusina (A893 RA)          Discovered 1893-Sep-15 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A893 RA = 1937 TL = 1948 TZ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 00:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin