(26308) 1998 SM165

Infobox Planet | discovery=yes | physical_characteristics=yes | bgcolour=#FFFFC0
name=mp|(26308) 1998 SM|165
discoverer=Nichole M. Danzl [ [http://cfa-www.harvard.edu/iau/lists/TNOs.html List Of Transneptunian Objects ] ]
discovered=September 16, 1998
mp_name=mp|(26308) 1998 SM|165
alt_names="none"
mp_category=twotino
epoch=December 31, 2006 (JD 2454100.5)
semimajor=7110.100 Gm (47.528 AU)
perihelion=4473.234 Gm (29.902 AU)
aphelion=9746.966 Gm (65.154 AU)
eccentricity=0.371
period=119680.629 d (327.67 a)
inclination=13.515°
asc_node=183.158°
arg_peri=130.468°
mean_anomaly=35.495°
avg_speed=4.17 km/s
dimensions=238 km (96±12 km satellite) [ [http://www.johnstonsarchive.net/astro/tnoslist.html List of known trans-Neptunian objects ] ]
mass=1.4e|19? kg
density=2.0? g/cm³
surface_grav=0.0665? m/s²
escape_velocity=0.1258? km/s
sidereal_day=? d
spectral_type=?
abs_magnitude=5.8
albedo=0.10?
single_temperature=~40 K

mp|(26308) 1998 SM|165, also written as (26308) 1998 SM165, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. It was discovered on September 16, 1998 by Nichole M. Danzl. It is in a 1:2 orbital resonance with the planet Neptune.

Satellite

Along with 10% of all trans-Neptunian objects, mp|(26308) 1998 SM|165 has a natural satellite. Designated S/2005 (26308) 1, it is about 96±12 km in diameter and it orbits its primary at a distance of 11,310±110 km, assuming a circular orbit, this takes 130.1±1 days to complete one orbit. [ [http://www.johnstonsarchive.net/astro/astmoons/am-26308.html (26308) 1998 SM165 and S/2001 (26308) 1 ] ]

References