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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03585100071213403 3.7572e-08  
a 3.007983858512816 1.6834e-08 au
q 2.900144627059186 1.108e-07 au
i 10.55642921995253 4.8295e-06 deg
node 38.06097823707341 2.2472e-05 deg
peri 90.96752930557604 7.38e-05 deg
M 176.9194834658712 7.0092e-05 deg
tp 2458064.049467487637
(2017-Nov-06.54946749)
0.00037049 TDB
period 1905.511960018148
5.22
1.5996e-05
4.379e-08
d
yr
n .1889256050623641 1.586e-09 deg/d
Q 3.115823089966446 1.7438e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1979  
   data-arc span      18506 days (50.67 yr)  
   first obs. used      1969-10-16  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46364  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:50:51  

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 1.97444685098105 1.97444633558489 1.97444736637767 3.56953123270049 3.44725522713168 2424953.569230460 2.13441131247369 129.255404335579 22.477609799939 -82.9371532573401 3271817.4497484 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:08 2020-Jun-23 16:51
1964-Jun-07 18:03 00:01 Jupiter 1.98672461147712 1.98672404748068 1.98672517547378 4.50766322816569 4.41206815653794 2438554.251920737 1.1364505319193 84.6984342652223 22.7239580492685 -80.9643349628359 3250462.84533235 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:08 2020-Jun-23 16:51
2010-Nov-11 21:06 < 00:01 Jupiter 1.92358003999191 1.92357961854935 1.92358046143447 3.98851429059419 3.87654140081173 2455512.379298799 0.219660328903985 93.2314708960597 18.292787171359 -88.7646475412986 3377600.84793291 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:08 2020-Jun-23 16:51
2094-Jul-04 22:11 00:02 Jupiter 1.93634389131389 1.936343450862 1.93634433176577 4.31781794965634 4.21529168490784 2486063.424512134 1.86838062245783 104.830925605465 19.3173318458094 -88.2149745376692 3474831.4110319 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:08 2020-Jun-23 16:51
2140-Dec-04 08:51 00:03 Jupiter 1.94228751088122 1.94228677546129 1.94228824630644 3.75022111199149 3.63207485136899 2503016.868425974 3.05699752628324 219.717834551796 22.5549920620765 -81.2983017667288 3403281.55648074 T 27 CATAB v2.0f-lin.ifort 2020-Jun-23 16:51:08 2020-Jun-23 16:51

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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