(145480) 2005 TB190
 Hubble Space Telescope image of 2005 TB190 taken in 2011 | |
| Discovery[1] | |
|---|---|
| Discovered by | Becker, A. C., Puckett, A. W., Kubica, J at Apache Point (705) |
| Discovery date | 11 October 2005 |
| Designations | |
| (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) | |
| 0° 0m 5.445s / day (n) | |
| 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) | |
| 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] | |
(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 TNO 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
- ^ a b c d e f "JPL Small-Body Database Browser: 145480 (2005 TB190)" (2008-08-29 last observation used). Retrieved 7 April 2016.
- ^ a b Marc W. Buie (2008-08-29). "Orbit Fit and Astrometric record for 145480". SwRI (Space Science Department). Retrieved 2009-01-24.
- ^ a b c 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 arXiv:1202.1481
- ^ a b c d Muller, T.G.; Lellouch, E.; Stansberry, J.; et al. (2010). ""TNOs are Cool": A survey of the trans-Neptunian region I. Results from the Herschel science demonstration phase (SDP)". Astronomy and Astrophysics. 518: L146. arXiv:1005.2923. Bibcode:2010A&A...518L.146M. doi:10.1051/0004-6361/201014683. S2CID 118635387.
- ^ a b Sheppard, Scott S. (2010). "The colors of extreme outer Solar System objects". The Astronomical Journal. 139 (4): 1394–1405. arXiv:1001.3674. Bibcode:2010AJ....139.1394S. doi:10.1088/0004-6256/139/4/1394. S2CID 53545974.
- ^ "How many dwarf planets are there in the outer solar system?". Gps.caltech.edu. 2015-07-21. Archived from the original on 2011-10-18. Retrieved 2015-07-22.
- ^ Emel’yanenko, V. V; Kiseleva, E. L. (2008). "Resonant motion of trans-Neptunian objects in high-eccentricity orbits". Astronomy Letters. 34 (4): 271–279. Bibcode:2008AstL...34..271E. doi:10.1134/S1063773708040075. S2CID 122634598.
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