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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03717270045590789 1.925e-08  
a 3.003650767579785 1.4631e-08 au
q 2.891996957322384 6.0236e-08 au
i 10.56182655518588 1.2726e-06 deg
node 37.98725793894589 1.0118e-05 deg
peri 92.16268644072416 3.7397e-05 deg
M 250.6988208695676 3.9803e-05 deg
tp 2459973.791186822734
(2023-Jan-29.29118682)
0.00021154 TDB
period 1901.396022527631
5.21
1.3893e-05
3.804e-08
d
yr
n .1893345708809426 1.3834e-09 deg/d
Q 3.115304577837187 1.5175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2344  
   data-arc span      18925 days (51.81 yr)  
   first obs. used      1969-10-16  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 19:41:37  

Additional Information
 Earth MOID = 1.9315 au 
 Jupiter MOID = 1.91225 au 
 T_jup = 3.225 
[ 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 12.37   n/a MPO636197  
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. 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:
[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 01:41 00:02 Jupiter 1.97444675794816 1.97444638945471 1.97444712644329 3.56953246710149 3.44725650014137 2424953.569940152 1.95807170229948 111.513033664224 6.78009578820126 -79.1984891168358 5150373.94397884 T 35 CATAB v2.0g-lin.ifort 2021-Aug-24 19:42:21 2021-Aug-24 19:42
1964-Jun-07 18:03 00:01 Jupiter 1.98672478157668 1.98672436708632 1.98672519606715 4.50766381292791 4.41206876277719 2438554.252282396 1.04906681915506 32.336663490195 9.4367389195689 -57.1388463221898 8938946.03043078 T 35 CATAB v2.0g-lin.ifort 2021-Aug-24 19:42:21 2021-Aug-24 19:42
2010-Nov-11 21:06 < 00:01 Jupiter 1.92358011230272 1.92357987922172 1.92358034538372 3.98851430385072 3.87654141934873 2455512.379296092 0.113309473289215 27.8784336569322 7.08620093135243 -74.8961126163256 6917939.41592244 T 35 CATAB v2.0g-lin.ifort 2021-Aug-24 19:42:21 2021-Aug-24 19:42
2094-Jul-04 22:11 00:02 Jupiter 1.93634389401778 1.93634363743847 1.93634415059709 4.31781797527645 4.21529171186928 2486063.424525671 1.67172916630559 43.2700304667702 11.1774413187249 89.2423817502921 6029337.22738161 T 35 CATAB v2.0g-lin.ifort 2021-Aug-24 19:42:21 2021-Aug-24 19:42
2140-Dec-04 08:51 00:03 Jupiter 1.9422875766665 1.94228702003757 1.94228813330138 3.75022091086649 3.63207464843167 2503016.868452494 2.75551648689086 183.898071859728 7.00791605178096 -80.2264630593117 5504959.45498721 T 35 CATAB v2.0g-lin.ifort 2021-Aug-24 19:42:21 2021-Aug-24 19:42

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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