8661 Ratzinger

8661 Ratzinger
Discovery
Discovered by	L. D. Schmadel; F. Börngen
Discovery site	Karl Schwarzschild Obs.
Discovery date	14 October 1990
Designations
MPC designation	(8661) Ratzinger
Named after	Pope Benedict XVI; (Pope, chronology)
Alternative designations	1990 TA13 · 1969 US; 1974 TM1 · 1992 CB1
Minor planet category	main-belt · (outer); Eos
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	49.86 yr (18,213 days)
Aphelion	3.1158 AU
Perihelion	2.9001 AU
Semi-major axis	3.0080 AU
Eccentricity	0.0359
Orbital period (sidereal)	5.22 yr (1,906 days)
Mean anomaly	176.919°
Mean motion	0° 11m 20.04s / day
Inclination	10.556°
Longitude of ascending node	38.061°
Argument of perihelion	90.968°
Physical characteristics
Dimensions	13.394±0.198
Synodic rotation period	4.301035±0.000002 h
Geometric albedo	0.090±0.011
Spectral type	S
Absolute magnitude (H)	12.3

8661 Ratzinger, provisional designation 1990 TA₁₃, is an Eoan asteroid from the outer region of the asteroid belt, approximately 13.4 kilometers in diameter. It was discovered on 14 October 1990, by German astronomers Lutz Schmadel and Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, eastern Germany.^[7] The asteroid was named after Cardinal Joseph Ratzinger, who became Pope Benedict XVI.^[2]

^ ^a ^b ^c Cite error: The named reference jpldata was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference springer was invoked but never defined (see the help page).
^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).
^ Cite error: The named reference Durech2018 was invoked but never defined (see the help page).
^ Cite error: The named reference lcdb was invoked but never defined (see the help page).
^ Cite error: The named reference MPC-Ratzinger was invoked but never defined (see the help page).

[jpldata-1] Cite error: The named reference jpldata was invoked but never defined (see the help page).

[springer-2] Cite error: The named reference springer was invoked but never defined (see the help page).

[Ferret-3] Cite error: The named reference Ferret was invoked but never defined (see the help page).

[Masiero-2011-4] Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).

[Durech2018-5] Cite error: The named reference Durech2018 was invoked but never defined (see the help page).

[lcdb-6] Cite error: The named reference lcdb was invoked but never defined (see the help page).

[MPC-Ratzinger-7] Cite error: The named reference MPC-Ratzinger was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]

[6]

[7]

Discovery ^[1]
Discovered by	L. D. Schmadel F. Börngen
Discovery site	Karl Schwarzschild Obs.
Discovery date	14 October 1990
Designations
MPC designation	(8661) Ratzinger
Named after	Pope Benedict XVI (Pope, chronology)^[2]
Alternative designations	1990 TA₁₃ · 1969 US 1974 TM₁ · 1992 CB₁
Minor planet category	main-belt · (outer) Eos ^[3]
Orbital characteristics ^[1]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	49.86 yr (18,213 days)
Aphelion	3.1158 AU
Perihelion	2.9001 AU
Semi-major axis	3.0080 AU
Eccentricity	0.0359
Orbital period (sidereal)	5.22 yr (1,906 days)
Mean anomaly	176.919°
Mean motion	0° 11^m 20.04^s / day
Inclination	10.556°
Longitude of ascending node	38.061°
Argument of perihelion	90.968°
Physical characteristics
Dimensions	13.394±0.198^[4]
Synodic rotation period	4.301035±0.000002 h^[5]
Geometric albedo	0.090±0.011^[4]
Spectral type	S^[6]
Absolute magnitude (H)	12.3^[1]