(15788) 1993 SB
Encyclopedia
1993 SB is a trans-Neptunian object
of the plutino
class. Apart from Pluto
, it was one of the first such objects discovered (beaten by two days by 1993 RO
and by one day by 1993 RP
), and the first to have an orbit calculated well enough to receive a number. The discovery was made in 1993 at the La Palma
Observatory with the Isaac Newton Telescope
.
Very little is known about the object. Even the diameter estimate of ~130 km is based on an assumed albedo of 0.09.
Trans-Neptunian object
A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater distance on average than Neptune.The first trans-Neptunian object to be discovered was Pluto in 1930...
of the plutino
Plutino
In astronomy, a plutino is a trans-Neptunian object in 2:3 mean motion resonance with Neptune. For every 2 orbits that a plutino makes, Neptune orbits 3 times. Plutinos are named after Pluto, which follows an orbit trapped in the same resonance, with the Italian diminutive suffix -ino...
class. Apart from Pluto
Pluto
Pluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System and the tenth-most-massive body observed directly orbiting the Sun...
, it was one of the first such objects discovered (beaten by two days by 1993 RO
1993 RO
1993 RO is a trans-Neptunian object of the plutino class.It was the first plutino discovered after Pluto itself, with 1993 RP and 1993 SB a day and two days behind. The discovery was made in 1993 at the Mauna Kea Observatory with a 2.2m telescope....
and by one day by 1993 RP
1993 RP
1993 RP is a trans-Neptunian object of the plutino class.It was discovered a day after 1993 RO, and a day before 1993 SB. The discovery was made in 1993 at the Mauna Kea Observatory with a 2.2m telescope.Very little is known about the object....
), and the first to have an orbit calculated well enough to receive a number. The discovery was made in 1993 at the La Palma
La Palma
La Palma is the most north-westerly of the Canary Islands. La Palma has an area of 706 km2 making it the fifth largest of the seven main Canary Islands...
Observatory with the Isaac Newton Telescope
Isaac Newton Telescope
The Isaac Newton Telescope or INT is a 2.54 m optical telescope run by the ING at Roque de los Muchachos Observatory on La Palma in the Canary Islands since 1984....
.
Very little is known about the object. Even the diameter estimate of ~130 km is based on an assumed albedo of 0.09.