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 ( provisional designation 2005 TB190) is a trans-Neptunian object (TNO) with an absolute magnitude of 4.4. [1]
(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. [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.
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.