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8661 Ratzinger (1990 TA13)
Classification: Main-belt Asteroid          SPK-ID: 2008661
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0358509994264339 3.728e-08  
a 3.007983856459767 1.6099e-08 au
q 2.900144628947105 1.104e-07 au
i 10.55642698514322 4.3625e-06 deg
node 38.0609776735435 2.2463e-05 deg
peri 90.96754327369828 6.7603e-05 deg
M 176.9194709205013 6.4458e-05 deg
tp 2458064.049534850132
(2017-Nov-06.54953485)
0.00033963 TDB
period 1905.511958067285
5.22
1.5298e-05
4.188e-08
d
yr
n .1889256052557861 1.5168e-09 deg/d
Q 3.115823083972428 1.6677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2061  
   data-arc span      18551 days (50.79 yr)  
   first obs. used      1969-10-16  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45745  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:00:54  

Additional Information
 Earth MOID = 1.93932 au 
 Jupiter MOID = 1.91362 au 
 T_jup = 3.224 
[ 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 MPO358715  
diameter diameter 13.394 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.301035 h n/a LCDB (Rev. 2019-August); 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.090   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8661 Ratzinger           Discovered 1990 Oct. 14 by L. D. Schmadel and F. Borngen at Tautenburg.
Joseph Cardinal Ratzinger (b. 1927), German professor of theology, is one of the most authoritative voices in the Vatican. Under his supervision, the Vatican opened its archives in 1998 to enable researchers to investigate judicial errors against Galileo and other medieval scientists. The name was proposed by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ 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
1927-Mar-14 01:40 00:02 Jupiter 1.97444679563998 1.97444630707389 1.97444728420652 3.56953106193251 3.44725504681846 2424953.569264244 2.09559603713909 125.696649156065 21.0150192561211 -82.6982766696117 3319275.44916001 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 00:01:10 2020-Aug-25 00:01
1964-Jun-07 18:03 00:01 Jupiter 1.9867245964899 1.98672404269396 1.98672515028607 4.50766275851948 4.41206767598708 2438554.251934899 1.11844814843617 79.606650085359 22.1392051432648 -80.2554237543845 3420484.47165891 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 00:01:10 2020-Aug-25 00:01
2010-Nov-11 21:06 < 00:01 Jupiter 1.92358000780783 1.92357960148565 1.92358041413002 3.98851390754871 3.87654100480157 2455512.379290790 0.205608286027665 86.37995301928 17.6931652626078 -88.1565898514638 3534969.18668458 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 00:01:10 2020-Aug-25 00:01
2094-Jul-04 22:11 00:02 Jupiter 1.93634385581113 1.93634347289223 1.93634423873003 4.31781740828767 4.21529112846908 2486063.424453433 1.79265538288629 98.5255759771682 16.764323946082 -88.0872537633337 3897626.71879694 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 00:01:10 2020-Aug-25 00:01
2140-Dec-04 08:50 00:03 Jupiter 1.9422874943996 1.9422867678803 1.94228822092408 3.75022060879672 3.63207433078715 2503016.868323701 2.94073265414744 210.680118272984 21.374482663657 -80.9044299200522 3545223.5762545 T 28 CATAB v2.0f-lin.ifort 2020-Aug-25 00:01:10 2020-Aug-25 00:01

Alternate Designations
 1990 TA13 = 1969 US = 1974 TM1 = 1992 CB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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