+ 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 | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1648311276451445 3.9104e-08   a 2.547784034959369 9.0076e-09 au q 2.12782991948072 9.8162e-08 au i 7.596225340405531 4.0489e-06 deg node 103.33063917 3.2557e-05 deg peri 85.87526042708649 3.582e-05 deg M 228.1323605952303 1.7847e-05 deg tp 2459544.599185500523 (2021-Nov-26.09918550) 7.4929e-05 TDB period 1485.396323649541 4.07 7.8773e-06 2.157e-08 d yr n .2423595603868864 1.2853e-09 deg/d Q 2.967738150438019 1.0492e-08 au   Orbit Determination Parameters    # obs. used (total)      2017      data-arc span      30851 days (84.47 yr)      first obs. used      1936-02-14      last obs. used      2020-08-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41033      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:33:35   Additional Information  Earth MOID = 1.14486 au   Jupiter MOID = 2.03122 au   T_jup = 3.411  [ 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 11.8   n/a MPO502166   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. 2019-August); 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 [ show close-approach data ] Alternate Designations  1936 DA = 1949 MR  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 20:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin