astro.wikisort.org - Asteroid

Prymno (minor planet designation: 261 Prymno) is a somewhat large Main belt asteroid. It is classified as a B-type asteroid and probably has a primitive composition not unlike common C-type carbonaceous asteroids.

261 Prymno

Discovery
Discovered by	C. H. F. Peters
Discovery date	31 October 1886
Designations
MPC designation	(261) Prymno
Pronunciation	/ˈprɪmnoʊ/
Named after	Πρυμνώ Prymnō
Alternative designations	A886 UA
Minor planet category	Main belt
Adjectives	Prymnoian /prɪmˈnoʊ.iən/
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	98.79 yr (36082 d)
Aphelion	2.54054 AU (380.059 Gm)
Perihelion	2.12336 AU (317.650 Gm)
Semi-major axis	2.33195 AU (348.855 Gm)
Eccentricity	0.089449
Orbital period (sidereal)	3.56 yr (1300.7 d)
Average orbital speed	19.51 km/s
Mean anomaly	35.7611°
Mean motion	0° 16m 36.386s / day
Inclination	3.63567°
Longitude of ascending node	96.6415°
Argument of perihelion	65.9065°
Physical characteristics
Dimensions	50.93±1.3 km
Synodic rotation period	8.002 h (0.3334 d)
Geometric albedo	0.1141±0.006
Spectral type	B
Absolute magnitude (H)	9.44

It was discovered by C. H. F. Peters on October 31, 1886, in Clinton, New York and was named after the Greek Oceanid Prymno.

References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File

External links

• Lightcurve plot of 261 Prymno, Palmer Divide Observatory, B. D. Warner (2009)
• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 261 Prymno at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 261 Prymno at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

---

[de] (261) Prymno

(261) Prymno ist ein Asteroid des Asteroiden-Hauptgürtels, der am 31. Oktober 1886 von Christian Heinrich Friedrich Peters am Observatorium von Clinton (USA) entdeckt wurde.

---

- [en] 261 Prymno

---

[es] (261) Prymno

(261) Prymno es un asteroide perteneciente al cinturón de asteroides descubierto por Christian Heinrich Friedrich Peters desde el observatorio Litchfield de Clinton, Estados Unidos, el 31 de octubre de 1886. Está nombrado por Primno, una diosecilla de la mitología griega.[2]

---

[ru] (261) Примно

(261) При́мно (др.-греч. Πρυμνώ) — один из типичных астероидов главного пояса, который принадлежит к очень редкому спектральному классу B, близкому по составу к астероидам C-класса.

---

---