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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .159013484707095 2.0706e-08  
a 3.095174459894916 1.3172e-08 au
q 2.602999983250625 6.9553e-08 au
i 2.509054236255008 9.3514e-07 deg
node 31.32743796675923 5.3929e-06 deg
peri 61.56499169856836 6.8894e-06 deg
M 280.9902670234134 5.3718e-06 deg
tp 2459637.020073655817
(2022-Feb-26.52007366)
3.1018e-05 TDB
period 1988.960354576347
5.45
1.2697e-05
3.476e-08
d
yr
n .1809990828483259 1.1554e-09 deg/d
Q 3.587348936539207 1.5267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      24735 days (67.72 yr)  
   first obs. used      1953-05-18  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45141  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:36:12  

Additional Information
 Earth MOID = 1.6206 au 
 Jupiter MOID = 1.61059 au 
 T_jup = 3.203 
[ 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 12.73   n/a MPCxxxxx  
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. 2020-October); 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 1.78571332127441 1.78571269847486 1.78571394407418 2.55850299283725 2.36585541391064 2429193.820428592 1.51744611826758 51.0635839787447 3.228604486261 80.8243361457276 5156623.90959768 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
1948-Aug-21 15:20 00:01 Jupiter 1.67275194959739 1.67275155186512 1.67275234732937 1.50547816813431 1.11970315182626 2432785.138784435 1.2953679508077 66.4946959566648 20.8891931812241 26.1718032808329 4840157.86576236 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2009-Feb-14 18:58 < 00:01 Jupiter 1.63645983953254 1.63645967375748 1.63646000530751 1.6906337947023 1.35020507759843 2454877.290216871 0.139416269470134 30.8248593425914 10.4700161501667 46.872896375311 7332275.20432397 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2018-Dec-19 22:38 < 00:01 Jupiter 1.84997595806909 1.84997580888223 1.84997610725595 2.0276490356829 1.78763774283623 2458472.443338021 0.177617549205214 5.04969842247559 4.76262366074963 -23.8382809265468 8712048.17459917 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2069-Aug-12 00:00 00:01 Jupiter 1.81851267754948 1.81851219238133 1.81851316271773 2.79534413571673 2.62343164432039 2476970.499973185 1.07588020454559 36.4817634395834 4.6644616073066 75.0152977592802 5705499.50113373 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2079-Jun-12 02:19 00:01 Jupiter 1.63983979692222 1.63983952693714 1.6398400669075 1.46008979501968 1.04823996005737 2480561.596832223 1.32163304261267 54.5075247966808 46.4128429981695 19.7702480596946 5064875.33859598 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2139-Dec-07 07:56 00:03 Jupiter 1.64397180320431 1.64397118874985 1.64397241765802 1.82092767855371 1.511727133339 2502653.830261259 2.53845923395345 76.7608228094032 21.9314904729841 -29.1924812891658 1855019.87608013 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2149-Oct-07 18:19 00:03 Jupiter 1.79940824148027 1.7994070237135 1.79940945924561 1.87340660066081 1.60256253020452 2506246.263189759 2.72203651003755 28.9920095097115 6.54583729690339 -50.4137946823147 4614411.42054188 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37
2200-Jun-03 06:59 00:04 Jupiter 1.86084289009356 1.86084115731381 1.86084462287522 3.05567596543286 2.90289360102266 2524746.790784005 3.61516598168396 133.233654143468 5.52224343671856 66.9833305964145 6681669.08184627 T 35 CATAB v2.0f-lin.ifort 2021-Apr-12 18:37:27 2021-Apr-12 18:37

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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