261 Prymno

Minor Planet | name=261 Prymno
discoverer=C. H. F. Peters
discovery_date=October 31, 1886
designations="n/a"
category=Main belt
epoch=30 January, 2005 (JD 2453400.5)
semimajor=348.746 Gm (2.331 AU)
perihelion=317.429 Gm (2.122 AU)
aphelion=380.063 Gm (2.541 AU)
eccentricity=0.09
period=1300.07 d (3.56 a)
inclination=3.635°
asc_node=96.779°
arg_peri=65.502°
mean_anomaly=313.525°
speed=19.51 km/s
dimensions=51.0 km
mass="unknown"
density="unknown"
gravity="unknown"
escape_velocity="unknown"
rotation=8.002 h
spectral_class=B
abs_mag=9.44
albedo=0.114
temperature="unknown"

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.

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

* [ftp://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
* [http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT Asteroid Lightcurve Data File]