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6353 Semper (3107 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2006353
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1586836008755902 2.8199e-08  
a 3.09713363885431 1.362e-08 au
q 2.605669320647988 9.183e-08 au
i 2.508386596929303 3.4339e-06 deg
node 31.35002895250262 8.2344e-05 deg
peri 61.325218611301 8.3183e-05 deg
M 245.0098460176511 1.266e-05 deg
tp 2459636.411237190384
(2022-Feb-25.91123719)
7.0935e-05 TDB
period 1990.849107165113
5.45
1.3133e-05
3.596e-08
d
yr
n .1808273659235909 1.1929e-09 deg/d
Q 3.588597957060632 1.5782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2482  
   data-arc span      24631 days (67.44 yr)  
   first obs. used      1953-05-18  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:36:25  

Additional Information
 Earth MOID = 1.62351 au 
 Jupiter MOID = 1.61019 au 
 T_jup = 3.202 
[ 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 12.6   n/a MPO435759  
diameter diameter 15.497 km 0.633 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 24. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.074   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6353 Semper (3107 T-3)          Discovered 1977-Oct-16 by van Houten & Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1938-Oct-22 07:41 00:02 Jupiter 1.78571315465674 1.78571238376297 1.78571392555041 2.55850235407066 2.36585470331577 2429193.820293598 1.58382593939032 60.2981283216863 10.2012430593546 83.3538662069021 1918331.99032183 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
1948-Aug-21 15:20 00:01 Jupiter 1.67275195721698 1.67275149031355 1.67275242411993 1.50547806463137 1.11970301222482 2432785.138663696 1.36133271119525 92.1574729575954 63.3794337448007 50.0236058685374 2413238.18770058 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2009-Feb-14 18:58 < 00:01 Jupiter 1.63645975880396 1.63645939692354 1.63646012068412 1.69063385957084 1.35020513779375 2454877.290228917 0.222454753639127 62.840599046916 41.8933641906404 62.3872438088815 2484972.39131424 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2018-Dec-19 22:38 < 00:01 Jupiter 1.84997595120276 1.84997565277568 1.84997624962974 2.02764871900059 1.78763738127008 2458472.443367016 0.234041381077236 47.5016637997184 7.12195906034416 84.4549547996269 3951682.84153428 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2069-Aug-12 00:00 00:01 Jupiter 1.81851276322838 1.81851218577218 1.81851334068448 2.79534487536756 2.62343243982444 2476970.500176546 1.09582593813953 48.0203790977956 12.4133452356925 83.6705318071114 2258215.34842787 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2079-Jun-12 02:20 00:01 Jupiter 1.63983966546036 1.63983932585751 1.63984000506302 1.46008962140728 1.04823967600799 2480561.597081677 1.34589376946712 93.8522151327825 81.2195263509193 78.7530441442 3007052.7697318 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2139-Dec-07 07:56 00:03 Jupiter 1.64397191184252 1.64397122068612 1.64397260299779 1.8209289312174 1.51172866285517 2502653.830779050 2.59109192976825 84.6365818634099 50.5095253052572 -36.4315876659415 1160152.32986585 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2149-Oct-07 18:20 00:03 Jupiter 1.79940781387026 1.79940657569874 1.79940905204025 1.87340505515292 1.60256065207007 2506246.263762871 2.77861806259983 56.2696535731557 21.2290498882284 -87.8452569823151 1180534.37984602 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36
2200-Jun-03 07:00 00:04 Jupiter 1.86084351612344 1.86084174843033 1.86084528381845 3.05567938672539 2.90289725426698 2524746.791624945 3.69762521576178 139.357846024474 17.4085089728312 68.6060968871794 2124305.22631942 T 29 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:32 2020-Nov-13 03:36

Alternate Designations
 3107 T-3 = 1972 VZ = 1985 FN2 = 1988 VU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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