(145480) 2005 TB190

(145480) 2005 TB190
Discovery[1]
Discovered by Becker, A. C., Puckett, A. W., Kubica, J at Apache Point (705)
Discovery date 2005-10-11
Designations
MPC designation (145480) 2005 TB190
Ext-SDO (DES)[2]
Orbital characteristics[1]
Epoch : Julian date 2457000.5 (2014 Dec 09)
Uncertainty parameter 2
Aphelion 104.37 AU (Q)
Perihelion 46.195 AU (q)
75.28 AU (a)
Eccentricity 0.3864
653.2 yr (238,600 days)
358.816° (M)
Inclination 26.5204°
180.4353°
171.71°
Physical characteristics
Dimensions 464±62 km[3]
372.5 ± 37.5 km[4]
12.68 hours
Albedo 0.148+0.051
−0.036[3]
0.12–0.20[4]
Spectral type
 B−V=0.98
V−R=0.56[5]
4.6[4]

    (145480) 2005 TB190, provisionally known as 2005 TB190, is a trans-Neptunian object (TNO) with an absolute magnitude of 4.7,[1] making it a likely dwarf planet.

    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 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.[6]

    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 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, 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

    1. ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 145480 (2005 TB190)" (2008-08-29 last observation used). Retrieved 2011-05-22.
    2. ↑ 2.0 2.1 Marc W. Buie (2008-08-29). "Orbit Fit and Astrometric record for 145480". SwRI (Space Science Department). Retrieved 2009-01-24.
    3. ↑ 3.0 3.1 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. ↑ 4.0 4.1 4.2 4.3 4.4 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.
    5. ↑ 5.0 5.1 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.
    6. ↑ Emel’yanenko, V. V; Kiseleva, E. L. (2008). "Resonant motion of trans-Neptunian objects in high-eccentricity orbits". Astronomy Letters 34: 271–279. Bibcode:2008AstL...34..271E. doi:10.1134/S1063773708040075.

    External links