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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1675172791050317 3.2113e-08  
a 3.137618334661179 1.0585e-08 au
q 2.612013048368678 1.0306e-07 au
i 2.659582911247124 3.3971e-06 deg
node 92.77942398964028 7.9864e-05 deg
peri 324.4957501111097 8.0522e-05 deg
M 322.1001023156277 9.7401e-06 deg
tp 2459214.214571778596
(2020-Dec-30.71457178)		 5.4913e-05 TDB
period 2030.011966813805
5.56		 1.0273e-05
2.813e-08		 d
yr
n .1773388560684379 8.9739e-10 deg/d
Q 3.66322362095368 1.2358e-08 au
   Orbit Determination Parameters
   # obs. used (total)      3615  
   data-arc span      46311 days (126.79 yr)  
   first obs. used      1894-01-30  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4577  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:53:12  

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. 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.DBLast 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 1.81869776496085 1.81869721820516 1.81869831171653 2.42060650614739 2.21988184627525 2419991.810478814 1.53905045862029 54.2882305430361 4.7555659099011 86.9549615076695 2420607.50440078 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
1923-Dec-09 03:44 00:01 Jupiter 1.71291355579298 1.71291322848726 1.7129138830986 1.64746716562982 1.3134548024144 2423762.655423269 1.33009181102767 71.0952625075971 39.5771007109111 87.8261190215073 2911529.22335003 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
1934-Apr-14 17:16 00:01 Jupiter 1.91256526173306 1.912564701644 1.91256582182245 2.22046469889395 2.01114855842896 2427542.219713041 1.13812809379724 76.1060575249749 3.86802659163192 88.8277652072152 3122995.68302538 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
1997-Feb-02 08:49 < 00:01 Jupiter 1.87473905557272 1.87473869095928 1.87473942018605 2.78494968594019 2.6176952292164 2450481.867411500 0.341295106663286 36.6034285653809 9.19627055805872 84.9596151540659 3507666.67248923 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2007-May-29 21:11 < 00:01 Jupiter 1.69979883868167 1.69979854652473 1.69979913083841 1.6854323631806 1.35796437500902 2454250.382455511 0.223879345639288 61.1110121879117 35.884713650059 84.3149418148481 2933306.1264028 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2017-Oct-01 18:34 < 00:01 Jupiter 1.84989629623072 1.84989594375743 1.8498966487039 1.99777561682485 1.75366931450814 2458028.273827918 0.226967130451977 53.9196830127623 9.263430172838 -89.0803860720378 3210095.66163419 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2080-Jul-24 20:55 < 00:01 Jupiter 1.92666592163371 1.92666540805196 1.92666643521557 3.17739194802246 3.03587831182572 2480970.371773930 0.975556135067587 46.4579666082533 13.0005276343161 77.5522894060853 2870290.14322823 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2090-Nov-17 22:50 00:01 Jupiter 1.70163062943793 1.70163028091633 1.70163097795933 1.7829043995368 1.47756757487412 2484738.451670817 1.16510063246839 58.4768480219336 34.7633996366449 -79.1606915423706 2398128.6864657 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2101-Mar-21 19:29 00:01 Jupiter 1.78800999191655 1.78800950517039 1.78801047866303 1.81605058304077 1.53316422351531 2488514.311847689 1.3295570661454 85.7477643512144 20.2361097673518 -88.1946884969315 2892615.2226689 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2164-Jan-15 18:22 00:02 Jupiter 1.99721395391116 1.9972130396803 1.99721486814292 3.65591785553368 3.53801233502174 2511459.264930975 2.16608056121671 93.286141269965 15.2055460267644 70.9180316126731 3064236.26934002 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2174-May-12 06:42 00:02 Jupiter 1.72720384418503 1.72720322552148 1.72720446284858 1.96895693958059 1.70176067730076 2515228.779391961 2.41734785968815 79.6766739308319 23.03641196131 -71.617760549356 1952269.15834085 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53
2184-Sep-07 20:48 00:03 Jupiter 1.7398453453707 1.73984470142136 1.73984598932044 1.70459068955221 1.38994740118718 2519000.366751115 2.55178258830486 98.7355392495007 32.2518469839439 -86.787576520723 2593741.63297473 T 43 CATAB v2.0f-lin.ifort 2020-Dec-18 01:53:22 2020-Dec-18 01:53

Alternate Designations
 A894 BC = 1925 QC = 1936 QQ1 = 1936 RO 
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