+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   383 Janina (A894 BC) Classification: Main-belt Asteroid          SPK-ID: 2000383 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1675172798015279 3.2315e-08   a 3.137618335748925 1.1556e-08 au q 2.612013047088868 1.0334e-07 au i 2.659585740723163 3.648e-06 deg node 92.77946368565922 8.2567e-05 deg peri 324.4957112828183 8.33e-05 deg M 322.1001010249722 1.1347e-05 deg tp 2459214.214579167637 (2020-Dec-30.71457917) 6.4221e-05 TDB period 2030.011967869448 5.56 1.1215e-05 3.07e-08 d yr n .1773388559762185 9.7975e-10 deg/d Q 3.663223624408982 1.3492e-08 au   Orbit Determination Parameters    # obs. used (total)      3363      data-arc span      46207 days (126.51 yr)      first obs. used      1894-01-30      last obs. used      2020-08-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47199      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:15:20   Additional Information  Earth MOID = 1.62473 au   Jupiter MOID = 1.68628 au   T_jup = 3.188  [ 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 9.9   n/a MPO502156 IRAS observations used: 10 diameter diameter 43.482 km 0.475 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 6.4 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.] geometric albedo albedo 0.040   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   B-V BV 0.682   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=4.18, mean=11.79, max.=18.24) deg. U-B UB 0.352   0.042 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=4.18, mean=11.79, max.=18.24) deg. Tholen spectral type spec_T B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B B   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) 383 Janina (A894 BC)          Discovered 1894-Jan-29 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1913-Aug-12 07:27 00:02 Jupiter 1.81869773513305 1.81869709282045 1.81869837744564 2.42060645406401 2.21988178604158 2419991.810436793 1.69743846180154 58.1527267751715 4.96510456239402 86.4205637382663 2112043.15989646 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 1923-Dec-09 03:44 00:01 Jupiter 1.71291356040809 1.71291323183571 1.71291388898028 1.64746720320431 1.31345485055847 2423762.655400721 1.47007010297673 76.2655693778068 40.9870341039093 86.9440126053124 2841348.20549617 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 1934-Apr-14 17:16 00:01 Jupiter 1.91256529426069 1.91256468481192 1.91256590370988 2.22046472272409 2.01114858848444 2427542.219687219 1.26063660552579 83.9738775009539 4.33344075008639 88.5772394921284 3062629.03693955 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 1997-Feb-02 08:49 < 00:01 Jupiter 1.87473904182435 1.8747386450844 1.87473943856421 2.78494972163134 2.61769526592224 2450481.867406857 0.357932078703726 37.0211903137502 9.92663185570832 84.5269692967302 3213389.90704291 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2007-May-29 21:11 < 00:01 Jupiter 1.6997988344645 1.69979852830186 1.69979914062695 1.68543243193651 1.35796445943476 2454250.382452697 0.226612403933693 67.6394570921386 36.8365387210708 83.9913675083365 2829800.34904428 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2017-Oct-01 18:34 < 00:01 Jupiter 1.84989630867568 1.84989595578724 1.84989666156401 1.99777564016959 1.75366934285891 2458028.273824653 0.231405438181254 56.1775171975149 9.31498848032393 -88.8086787403979 3200527.58722665 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2080-Jul-24 20:55 00:01 Jupiter 1.92666592902791 1.92666541039802 1.9266664476579 3.17739202285838 3.03587839070579 2480970.371798356 1.09244875700174 49.958103273156 13.1776961913077 78.6014877012584 2865703.02618645 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2090-Nov-17 22:50 00:01 Jupiter 1.70163062633796 1.70163027490828 1.70163097776745 1.78290452290131 1.47756772311795 2484738.451701142 1.293968995487 63.8422194398685 35.7954481996365 -83.2996261474514 2358986.12532237 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2101-Mar-21 19:29 00:01 Jupiter 1.78800998543161 1.78800946121061 1.78801050965302 1.81605053961996 1.53316417096221 2488514.311889274 1.47363809369347 92.6187061981648 20.4989626157597 -87.5743601928457 2791258.09225706 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2164-Jan-15 18:22 00:02 Jupiter 1.99721398739067 1.99721301803911 1.99721495674347 3.65591804990992 3.53801253788503 2511459.264993039 2.41905570781517 103.736079701009 15.5460362919318 71.7676440301975 3019750.9133773 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2174-May-12 06:42 00:03 Jupiter 1.72720385472263 1.72720322506094 1.72720448438433 1.96895719021335 1.70176096904391 2515228.779471183 2.68698008008849 86.9161234113664 24.4891460682009 -72.4321409297909 1878108.47462654 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 2184-Sep-07 20:48 00:03 Jupiter 1.73984532257679 1.73984460160866 1.73984604354541 1.70459066277004 1.38994736375356 2519000.366836325 2.83297531907877 109.023855449632 33.2789416257195 -85.7085958462929 2421811.7556357 T 40 CATAB v2.0f-lin.ifort 2020-Aug-24 22:15:33 2020-Aug-24 22:15 Alternate Designations  A894 BC = 1925 QC = 1936 QQ1 = 1936 RO  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-22 19:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin