(145480) 2005 TB190
| Discovery[1] | |
|---|---|
| Discovered by | Becker, A. C., Puckett, A. W., Kubica, J at Apache Point (705) |
| Discovery date | 11 October 2005 |
| Designations | |
| MPC designation | (145480) 2005 TB190 |
| Ext-SDO (DES)[2] | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 5041 days (13.80 yr) |
| Aphelion | 104.14 AU (15.579 Tm) (Q) |
| Perihelion | 46.197 AU (6.9110 Tm) (q) |
| 75.166 AU (11.2447 Tm) (a) | |
| Eccentricity | 0.38540 (e) |
| 651.69 yr (238031 d) | |
| 359.520° (M) | |
| Inclination | 26.5376° (i) |
| 180.4280° (Ω) | |
| 171.47° (ω) | |
| Earth MOID | 45.1927 AU (6.76073 Tm) |
| Jupiter MOID | 41.2446 AU (6.17010 Tm) |
| Physical characteristics | |
| Dimensions | 464±62 km[3] 372.5±37.5 km[4] |
| 12.68 h (0.528 d) | |
|
Sidereal rotation period
|
12.68 hours |
| 0.148+0.051 −0.036 [3] 0.12–0.20 [4] |
|
| B−V=0.98 V−R=0.56[5] |
|
| 4.40±0.11 ,[3] 4.6[1] | |
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(145480) 2005 TB190, provisionally known as 2005 TB190, is a trans-Neptunian object (TNO) with an absolute magnitude of 4.4,[1] making it a likely dwarf planet.[6]
Orbit
(145480) 2005 TB190 is classified as scattered-extended by the Deep Ecliptic Survey (DES), because its orbit appears to be beyond significant gravitational interactions with Neptune's current orbit.[2] However, if Neptune migrated outward, there would have been a period when Neptune had a higher eccentricity. The aphelion of (145480) 2005 TB190 lies at 104 AU.[4]
Simulations by Emel’yanenko and Kiseleva in 2007 showed that (145480) 2005 TB190 appears to have less than a 1% chance of being in a 4:1 resonance with Neptune.[7]
It has been observed 202 times over seven oppositions.[1] It will come to perihelion in January 2017.[1] There are precovery observations dating back to November 2001.
Physical properties
In 2010, thermal flux from (145480) 2005 TB190 in the far-infrared was measured by the Herschel Space Telescope. As a result, its size was estimated to lie within a range from 335 to 410 km.[4]
In the visible light, (145480) 2005 TB190 has a moderately red spectral slope.[5]
The asteroid was found in 2009 to have a rotation period of 12.68 ±3 hours, a common value for trans-neptunian objects of its size. Similarly-sized (120348) 2004 TY364 has a rotation period of 11.7 ± 3 hours.
References
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<references />, or <references group="..." />External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- (145480) 2005 TB190 at the JPL Small-Body Database
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Santos-Sanz, P., Lellouch, E., Fornasier, S., Kiss, C., Pal, A., Müller, T. G., Vilenius, E., Stansberry, J., Mommert, M., Delsanti, A., Mueller, M., Peixinho, N., Henry, F., Ortiz, J. L., Thirouin, A., Protopapa, S., Duffard, R., Szalai, N., Lim, T., Ejeta, C., Hartogh, P., Harris, A. W., & Rengel, M. (2012). “TNOs are Cool”: A Survey of the Transneptunian Region IV - Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory-PACS
- ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
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