+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1391 Carelia (1936 DA) Classification: Main-belt Asteroid          SPK-ID: 2001391 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1646292515629282 2.772e-08   a 2.54847773091772 8.0678e-09 au q 2.128923749451946 7.0722e-08 au i 7.595662533166643 2.8699e-07 deg node 103.3312661985157 6.5454e-06 deg peri 85.7767998418696 1.1735e-05 deg M 324.1649781083095 1.3711e-05 deg tp 2459544.419307414915 (2021-Nov-25.91930741) 5.6981e-05 TDB period 1486.003017671306 4.07 7.0565e-06 1.932e-08 d yr n .2422606116669606 1.1504e-09 deg/d Q 2.968031712383493 9.396e-09 au   Orbit Determination Parameters    # obs. used (total)      2435      data-arc span      31160 days (85.31 yr)      first obs. used      1936-02-14      last obs. used      2021-06-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .38693      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:19:20   Additional Information  Earth MOID = 1.14672 au   Jupiter MOID = 2.02898 au   T_jup = 3.410  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.90   n/a E2021B10   diameter diameter 11.079 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 5.87822 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] geometric albedo albedo 0.214   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.897   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=6.85, mean=12.94, max.=18.69) deg. U-B UB 0.433   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.85, mean=12.60, max.=18.35) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 1391 Carelia (1936 DA)          Discovered 1936-Feb-16 by Vaisala, Y. at Turku Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1936 DA = 1949 MR  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-29 10:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin