(15788) 1993 SB
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| Discovery A | |
|---|---|
| Discoverer | Iwan P. Williams, Alan Fitzsimmons, and Donal O'Ceallaigh |
| Discovery date | September 16, 1993 |
| Alternate designations B |
none |
| Category | Plutino |
| Orbital elements C | |
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| Eccentricity (e) | 0.317 |
| Semi-major axis (a) | 5,856.2 Gm (39.146 AU) |
| Perihelion (q) | 3,997.1 Gm (26.719 AU) |
| Aphelion (Q) | 7,715.1 Gm (51.572 AU) |
| Orbital period (P) | 89,461 d (244.93 a) |
| Mean orbital speed | 4.64 km/s |
| Inclination (i) | 1.9° |
| Longitude of the ascending node (Ω) |
354.9° |
| Argument of perihelion (ω) |
79.5° |
| Mean anomaly (M) | 335.2° |
| Physical characteristics D | |
| Dimensions | 130? km |
| Mass | ~2×1018 kg |
| Density | 2.0? g/cm³ |
| Surface gravity | ~0.04 m/s² |
| Escape velocity | ~0.07 km/s |
| Rotation period | ? d |
| Spectral class | ? |
| Absolute magnitude | 7.7 |
| Albedo (geometric) | 0.09? |
| Mean surface temperature |
~44 K |
(15788) 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 the guess of an albedo of 0.09 [1].
[edit] External links
- First MPEC listing
- MPEC: recovery of the object
- list of known TNOs, including size estimates
- IAU minor planet lists
| Minor planets | ||
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| Previous minor planet | (15788) 1993 SB | Next minor planet |
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| Plutinos : Pluto* | 1993 RO | 1993 RP | 1993 SB | 1993 SC | 1994 TB | 1995 QZ9 | 1996 SZ4 | 1996 TP66 | 38083 Rhadamanthus | 1999 TC36 | 38628 Huya | 28978 Ixion | 2002 VR128 | 2003 VS2 | 90482 Orcus | Unnumbered: 2003 AZ84
Cubewanos: 1992 QB1 | 1994 GV9 | 1994 JQ1 | 1994 VK8 | 1996 TO66 | 58534 Logos| 1998 WW31 | 19521 Chaos | 53311 Deucalion | 20000 Varuna | 2001 KP77 | 2002 AW197 | 50000 Quaoar | 2002 MS4 | 2002 TX300 | 2002 UX25 | 2003 EL61 | 2004 GV9| 2005 FY9 | Unnumbered: | 2003 MW12 | 2003 QW90 | 2005 RN43 Twotinos: 2002 WC19 | 1996 TR66 | Unnumbered: 1998 SM165 | 1997 SZ10 | 1999 RB216 | 2000 JG81 Scattered disc objects: Eris* | 1995 TL8 | 1996 GQ21 | 1996 TL66 | 1999 DE9 | 2000 OO67 | 2000 OM67 | 2001 KC77 | 2001 UR163 | 2002 CY224 | 2002 GX32 | 2002 RP120 | 2002 TC302 | 90377 Sedna** Unnumbered: 2000 CR105 | 2000 EE173 | 2004 XR190 | 2005 TN74 Unclassified Objects : 1994 JS | 1994 JR1 | 1995 DA2 | 1995 SM55 | 1996 TQ66 | 1997 CR29 | 1997 CS29 | 1997 CU29 | 1997 QJ4 | 1998 HJ151 | 1998 HK151 | 1998 HP151 | 1998 HM151 | 1998 KR65 | 1998 SM165 | 1998 SN1651998 US43 | 1998 VG44 | 1998 WW24 | 1998 WA31 | 1998 WU31 | 1998 WA25 | 1999 CP133 | 1999 CL158 | 1999 CC158 | 1999 DF9 | 1999 HT11 | 1999 HB12 | 1999 HC12 | 1999 KR16 | 1999 OY3 Natural satellites : Charon (Pluto) | Hydra (Pluto) | Nix (Pluto) | Dysnomia (Eris) | S/2000 (1998 WW31) 1 | S/2005 (2003 EL61) 1 | S/2005 (2003 EL61) 2 | (58534) Logos I Zoe |
| * - Also classified as a dwarf planet ** - Currently classified as an SDO, though may be part of the Inner Oort Cloud |
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| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
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