+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   737 Arequipa (A912 XC) Classification: Main-belt Asteroid          SPK-ID: 2000737 [ 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 50 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2452114852535252 3.3168e-08   a 2.590517380060064 6.1407e-09 au q 1.955292765720464 8.5763e-08 au i 12.36667491021032 3.9882e-06 deg node 184.6319594565397 1.8109e-05 deg peri 134.1222620399709 1.97e-05 deg M 356.1459528070712 8.8109e-06 deg tp 2459016.803945688417 (2020-Jun-16.30394569) 3.7298e-05 TDB period 1522.923865229015 4.17 5.415e-06 1.483e-08 d yr n .2363873915298214 8.4052e-10 deg/d Q 3.225741994399663 7.6465e-09 au   Orbit Determination Parameters    # obs. used (total)      3019      data-arc span      38539 days (105.51 yr)      first obs. used      1915-05-07      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44987      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:55:48   Additional Information  Earth MOID = .965312 au   Jupiter MOID = 2.23394 au   T_jup = 3.345  [ 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 9.0   n/a MPO492758 IRAS observations used: 5 diameter diameter 47.804 km 0.368 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 7.0259 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Bartczak, P.; et al. (2016) Proc. Polish Ast. Soc. 123, 51-57.] [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.231   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.832   0.053 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.17, mean=18.02, max.=29.88) deg. U-B UB 0.208   0.037 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=29.88 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B S   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) 737 Arequipa (A912 XC)          Discovered 1912-Dec-07 by Metcalf, J. H. at Winchester Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A912 XC = 1961 JH  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 23:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin