+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1676994663792633 3.2076e-08   a 3.138227297422895 1.0308e-08 au q 2.611948254268238 1.0304e-07 au i 2.659543038652867 3.3431e-06 deg node 92.78050290348513 7.7757e-05 deg peri 324.5010398739336 7.8411e-05 deg M 357.5662279512557 9.3029e-06 deg tp 2459214.227846637020 (2020-Dec-30.72784664) 5.2469e-05 TDB period 2030.602985960348 5.56 1.0004e-05 2.739e-08 d yr n .1772872405335022 8.7345e-10 deg/d Q 3.664506340577552 1.2036e-08 au   Orbit Determination Parameters    # obs. used (total)      3770      data-arc span      46374 days (126.97 yr)      first obs. used      1894-01-30      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44966      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:46:06   Additional Information  Earth MOID = 1.62394 au   Jupiter MOID = 1.68576 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 9.93   n/a E2021B10 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. 2020-October); Warner et al., 2009 Published Reference List: [Tedesco, E.F. (1979) PhD Dissertation, New. Mex. State Univ. 280pp.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] 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 1.81869784768771 1.8186973256293 1.81869836974612 2.42060693799895 2.21988232671852 2419991.810600578 1.49908051052408 52.7987633476654 4.69628375939541 87.1262922702674 2534613.86118232 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 1923-Dec-09 03:44 00:01 Jupiter 1.71291355861963 1.71291323148975 1.71291388574931 1.64746723753965 1.31345489323221 2423762.655537502 1.29481532909807 69.8947628160466 39.3147596684142 87.8463762909221 2923314.56903339 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 1934-Apr-14 17:17 00:01 Jupiter 1.91256519850577 1.91256465160081 1.91256574541107 2.22046446910206 2.01114829744094 2427542.219805622 1.10731019149546 74.2221388118138 3.72713050417001 88.903387817566 3135290.50308031 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 1997-Feb-02 08:49 < 00:01 Jupiter 1.87473909513348 1.87473873857412 1.87473945169273 2.78494993872712 2.61769550179699 2450481.867438999 0.336996401481117 36.1238049222665 9.01168038727089 85.0645119251663 3590089.91250552 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2007-May-29 21:11 < 00:01 Jupiter 1.69979885864265 1.69979856918157 1.69979914810354 1.68543241463593 1.35796444318178 2454250.382455278 0.223144342587772 59.0343189694761 35.7193353708941 84.1578758298359 2953010.74293962 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2017-Oct-01 18:34 < 00:01 Jupiter 1.84989629035613 1.84989593811314 1.84989664259903 1.99777567617543 1.75366938129103 2458028.273809575 0.225967394279057 53.5734970546629 9.21782227151649 -89.1878722763002 3211574.88541915 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2080-Jul-24 20:55 < 00:01 Jupiter 1.92666590593729 1.92666539345335 1.92666641842122 3.17739174917575 3.03587810253025 2480970.371689327 0.94647290032946 45.5630754517797 12.9434225971948 77.2280942490996 2875128.24509917 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2090-Nov-17 22:50 00:01 Jupiter 1.70163063958272 1.7016302915226 1.70163098764264 1.78290435247346 1.47756752009366 2484738.451576237 1.1329901463971 56.386401639658 34.3394236612669 -77.1524784761108 2414248.90475815 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2101-Mar-21 19:29 00:01 Jupiter 1.78801003361161 1.78800955510185 1.78801051212166 1.81605072440549 1.53316439816872 2488514.311740464 1.29357694079125 84.2511597769424 20.1768084433511 -88.3906978141684 2910520.66050781 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2164-Jan-15 18:21 00:02 Jupiter 1.99721387790796 1.99721297666741 1.99721477914942 3.65591732573705 3.53801178300784 2511459.264755383 2.10274393773664 90.7270506517775 15.1062964839262 70.6579918014503 3075064.01625095 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2174-May-12 06:42 00:02 Jupiter 1.72720381685094 1.72720320107636 1.72720443262553 1.96895671651863 1.70176041465495 2515228.779205514 2.34987690506086 77.429105377458 22.3234437911181 -71.0549879185014 1994934.66329028 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 2184-Sep-07 20:48 00:02 Jupiter 1.73984541880097 1.73984479292456 1.73984604467788 1.70459082951193 1.38994758761225 2519000.366562085 2.48135369386447 96.2519523906091 32.0723578159148 -87.1281573081331 2632187.55870261 T 45 CATAB v2.0f-lin.ifort 2021-Feb-24 00:46:16 2021-Feb-24 00:46 Alternate Designations  A894 BC = 1925 QC = 1936 QQ1 = 1936 RO  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 14:00 UT (server date/time)   Site Manager:   Ryan S. 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