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3097 Tacitus (2011 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2003097
[ 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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09023450166857344 2.4504e-08  
a 2.928688737815043 1.0853e-08 au
q 2.664419969015939 7.1441e-08 au
i 7.461722772300126 3.4073e-06 deg
node 196.6662222569544 2.1838e-05 deg
peri 86.72257292502181 3.0859e-05 deg
M 39.38983160533248 2.0391e-05 deg
tp 2458800.195882894636
(2019-Nov-12.69588289)		 0.00010371 TDB
period 1830.662361810381
5.01		 1.0176e-05
2.786e-08		 d
yr
n .1966501346780235 1.0931e-09 deg/d
Q 3.192957506614146 1.1833e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2954  
   data-arc span      24681 days (67.57 yr)  
   first obs. used      1953-04-15  
   last obs. used      2020-11-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45446  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:10:20  

Additional Information
 Earth MOID = 1.66175 au 
 Jupiter MOID = 1.9394 au 
 T_jup = 3.258 
[ 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 12.3   n/a MPO435727  
diameter diameter 20.810 km 0.170 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.7759 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.054   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3097 Tacitus (2011 P-L)          Discovered 1960-Sep-24 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
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
1941-May-28 05:03 00:01 Jupiter 1.93441205112838 1.93441173799605 1.93441236426093 3.36747888358368 3.23483731726485 2430142.710541219 1.22830806614325 70.8165261756037 11.3842240864265 82.6021960012719 4217667.5677334 T 42 CATAB v2.0f-lin.ifort 2020-Dec-18 02:10:28 2020-Dec-18 02:10
1976-Feb-19 05:19 < 00:01 Jupiter 1.97555801507994 1.97555769679999 1.97555833335989 3.92233977350961 3.8114626138871 2442827.721708982 0.645050164632559 50.087714357633 13.1403055689801 -86.5850358285744 4382299.12728564 T 42 CATAB v2.0f-lin.ifort 2020-Dec-18 02:10:28 2020-Dec-18 02:10
2071-Oct-29 05:39 < 00:01 Jupiter 1.94220639607594 1.94220610256183 1.94220668959004 3.41412119811435 3.28389958222537 2477778.735571167 0.945552829071087 60.2158287071677 11.1458761926568 89.4396107858672 3947566.81944275 T 42 CATAB v2.0f-lin.ifort 2020-Dec-18 02:10:28 2020-Dec-18 02:10
2106-Jul-22 10:12 00:01 Jupiter 1.99514113389183 1.99514061791054 1.99514164987436 4.02126241840762 3.91426444251871 2490462.925317633 1.47470593963716 103.592720412211 13.2463673248513 -80.2863791644158 4323604.88616872 T 42 CATAB v2.0f-lin.ifort 2020-Dec-18 02:10:28 2020-Dec-18 02:10
2167-Jul-17 04:10 00:03 Jupiter 1.99420897057196 1.99420848904264 1.99420945210173 2.96338935115357 2.81641514029807 2512737.673329106 2.60222551785785 61.8109670156443 14.0227329502607 64.0298458515154 4039574.00573311 T 42 CATAB v2.0f-lin.ifort 2020-Dec-18 02:10:28 2020-Dec-18 02:10

Alternate Designations
 2011 P-L = 1965 SX = 1975 TL = 1979 MH9 = 1980 RW2 = 1980 TR6 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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