+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   615 Roswitha (A906 TF) Classification: Main-belt Asteroid          SPK-ID: 2000615 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1096918867932984 3.5061e-08   a 2.631721249797014 7.5227e-09 au q 2.343042780392762 9.3005e-08 au i 2.761711465089839 3.6435e-06 deg node 13.44845459776668 7.756e-05 deg peri 247.5777110888342 7.9264e-05 deg M 340.711752942339 1.6561e-05 deg tp 2459084.050396847477 (2020-Aug-22.55039685) 7.1767e-05 TDB period 1559.402613165164 4.27 6.6862e-06 1.831e-08 d yr n .230857635456502 9.8984e-10 deg/d Q 2.920399719201265 8.3478e-09 au   Orbit Determination Parameters    # obs. used (total)      3391      data-arc span      43065 days (117.91 yr)      first obs. used      1902-11-21      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41455      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:27:39   Additional Information  Earth MOID = 1.32939 au   Jupiter MOID = 2.13684 au   T_jup = 3.389  [ 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 10.3   n/a MPO337247   diameter diameter 48.626 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 4.422 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, M.; Krugly, Y.N.; et al. (2008) Icarus 196, 601-611.] geometric albedo albedo 0.020   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   B-V BV 0.708   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=3.38, mean=5.43, max.=8.10) deg. U-B UB 0.315   0.054 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.38, mean=4.09, max.=4.80) deg. Tholen spectral type spec_T CX   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 615 Roswitha (A906 TF)          Discovered 1906-Oct-11 by Kopff, A. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A906 TF = A902 WF = A902 YA = A908 BA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-17 22:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin