(55636) 2002 TX300
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| Discovery A | |
|---|---|
| Discoverer | NEAT |
| Discovery date | October 15, 2002 (JD 2452562.5) |
| Alternate designations B | (55636) 2002 TX300 |
| Category | Trans-Neptunian object |
| Orbital elements C | |
| Eccentricity (e) | 0.123 |
| Semi-major axis (a) | 43.088 AU |
| Perihelion (q) | 37.802 AU (5.655 Tm) |
| Aphelion (Q) | 48.374 AU (7.237 Tm) |
| Orbital period (P) | ~103305 d |
| Mean orbital speed | ~4.5 km/s (average) |
| Inclination (i) | 25.9° |
| Longitude of the ascending node (Ω) | 324.6° |
| Argument of perihelion (ω) | 338.6° |
| Mean anomaly (M) | 61.5° |
| Physical characteristics D | |
| Dimensions | 530?H - 709 km |
| Mass | ? |
| Density | ? |
| Surface gravity | ? |
| Escape velocity | ? |
| Rotation period | ?(7.9h or 15.8h) |
| Spectral class | (neutral) B-V=0.63; V-R=0.36<ref>Doressoundiram (2004). The Meudon Multicolor Survey (2MS) of Centraurs and Trans-Neptunian objects. Retrieved on 2006-11-06.</ref> |
| Absolute magnitude | 3.5 |
| Albedo (geometric) | >0.19 |
| Mean surface temperature | ? |
- The correct title of this article is (55636) 2002 TX300. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
(55636) 2002 TX300 (Also written as (55636) 2002 TX300) is a large Trans-Neptunian object discovered in October 15, 2002 by the NEAT program.
A Classical Kuiper Belt object with the absolute magnitude between that of (50000) Quaoar and (20000) Varuna, 2003 TX 300 has the most eccentric and inclined orbit of the three.
A variability of the visual brightness was also detected which could fit to 7.9 h or 15.8 h rotational period (the distinction between single or double-peaked curved cold not be made with confidence). The changes in brightness are quite close to the error margin and could also be due to irregular shape.
Contents |
[edit] Size
The non-detection of IR thermal emissions puts an upper limit of 709 km on its diameter and a lower limit on the albedo of 0.19.
[edit] Orbit
2002 TX300 is classified as a classical Kuiper belt object and follows an orbit very similar to that of 2003 EL61: highly inclined (26°) and moderately eccentric (e~0.12), far from Neptune’s perturbations (perihelion at ~37AU). Other mid-sizes cubewanos follow similar orbits as well, notably 2002 UX25 and 2002 AW197.
The diagrams show polar and ecliptic views of the orbits of the two cubewanos. The perihelia (q) and the aphelia (Q) are marked with the dates of passage. The present positions (as of April 2006) are marked with the spheres illustrating relative sizes and differences in albedo (both objects appear neutral in the visible spectrum). Very similar orbits for these 'hot' classical objects do not imply similar physical properties; 2002 TX300 is smaller and much dimmer (albedo<0.08) than 2003 EL61.
[edit] Surface
The spectrum in visible and infrared is very similar to that of Charon characterised by neutral to blue slope (1%/1000Å) with deep (60%) water absorption bands at 1.5 and 2.0 μm) (Licandro et al,2006). Mineralogical analysis indicates a substantial fraction of large water (ice) particles. The signal/noise ratio of the observations was insufficient to differentiate between amorphous or crystalline ice (crystalline ice was reported on Charon, (50000) Quaoar and 2003 EL61). The proportion of highly processed organic materials (tholins), typically present on numerous trans-Neptunian objects, is very low. This lack of irradiated mantle suggest either a recent collision or comet activity.
[edit] External links
- AstDys orbital elements
- Orbit simulation from JPL (Java).
[edit] References
<references/>
- J. L. Ortiz, A. Sota, R. Moreno, E. Lellouch, N. Biver, A. Doressoundiram, P. Rousselot, P. J. Gutiérrez, I. Márquez, R. M. González Delgado and V. Casanova A study of Trans-Neptunian object (55636) 2002 TX300, Astronomy & Astrophysics, 420 (2004), Issue 1, pp. 383-388. Abstract.
- Pinilla-Alonso, N.; Licandro, J.; Campins, H. Mineralogical analysis of two different kind of icy surfaces in the trans-neptunian belt, TNOs (50000) Quaoar and 2002 TX300, American Astronomical Society, DPS meeting #36, #11.07 (2004). Abstract.
- J.Licandro, L. di Fabrizio, N. Pinilla-Alonso, J. de León, and E. Oliva Trans-Neptunian object (55636) 2002 TX300 ,a fresh icy surface in the outer Solar System. 2006, A&A,457,329-333 [1]
- Grundy, W. M.; Noll, K. S.; Stephens, D. C. "Diverse albedos of small trans-neptunian objects." Icarus, Volume 176, Issue 1, p. 184-191. (07/2005). Abstract. (Preprint on arXiv.)
| Minor planets | ||
|---|---|---|
| Previous minor planet | (55636) 2002 TX300 | Next minor planet |
| Large trans-Neptunian objects |
| Kuiper belt: Orcus | Pluto (Charon) | Ixion | 2002 UX25 | Varuna | 2002 TX300 | 2003 EL61 | Quaoar | 2005 FY9 | 2002 AW197 |
| Scattered disc: 2002 TC302 | Eris | 2004 XR190 | Sedna |
| See also Triton, astronomical objects and the solar system's list of objects, sorted by radius or mass. For pronunciation, see: Centaur and TNO pronunciation. |
| Small Solar System bodies |
|---|
| 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. |
| Image:Solar System XXVII.png |
| The Sun · Mercury · Venus · Earth · Mars · Ceres · Jupiter · Saturn · Uranus · Neptune · Pluto · Eris |
| Planets · Dwarf planets · Moons: Terran · Martian · Asteroidal · Jovian · Saturnian · Uranian · Neptunian · Plutonian · Eridian |
| Small bodies: Meteoroids · Asteroids (Asteroid belt) · Centaurs · TNOs (Kuiper belt/Scattered disc) · Comets (Oort cloud) |
| See also astronomical objects and the solar system's list of objects, sorted by radius or mass. |
de:2002 TX300 fr:(55636) 2002 TX300 it:(55636) 2002 TX300 ja:2002 TX300 pl:(55636) 2002 TX300 pt:2002 TX300
