Event between (42355) Typhon and star GA0660:06868084 with event index number of 2412954
Geocentric closest approach at 2027/06/04 05:45:30 UTC
J2000 position of star is 15:58:11.0 -22:55:15
Equinox of date position of star is 15:59:38.2 -22:59:23
Stellar brightness G=15.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 176 degrees from the moon.
Moon is 1% illuminated.
Apparent brightness V=21.9
[RECON map]
Object is 27.3 AU from the Sun
and 26.4 AU from the Earth.
Apparent velocity is 23.2
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 55 seconds.
The 1-sigma cross-track error in the shadow position is
1000 km.
The sky-plane scale is
19112.2 km/arcsec.
The object has an absolute magnitude Hv=7.6
Diameter=181.1 km assuming a 5% albedo -- 7.7 sec chord
Diameter=74.0 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CENTAURR
Star training set for 42355, (2027/06/04 05:45UT) Object RA Dec mag sep mel Antares 16:31:05.6 -26:29:25 0.9 7.91 176 7Del Sco 16:01:57.6 -22:41:51 2.3 0.58 176 PPM 264830 15:55:34.1 -24:03:28 5.4 1.44 176 PPM 264901 15:58:25.7 -23:15:43 8.1 0.41 176 PPM 264952 16:01:01.7 -23:07:36 9.8 0.31 176 PPM 264939 16:00:14.7 -23:01:51 10.1 0.10 176 42355 15:59:48.7 -22:59:52 15.3 176 Positions are for equinox of date
This table contains the target star visibility for the RECON
network. The observing range has been set to a maximum of
5.0 sigma about the mid-time.
The median site spacing is 9.6 km
RECON observability=0.6 and success probability=0.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 05:46:43 | -13.7 | AT | Down | 14.8 | 174.0 | Really Low | 05:41:39 - 05:51:47 | 3818 |
| Kamloops | 05:47:23 | -11.3 | NT | Down | 14.2 | 160.5 | Really Low | 05:42:19 - 05:52:27 | 3480 |
| Kelowna | 05:47:21 | -12.3 | AT | Down | 15.1 | 161.2 | Really Low | 05:42:17 - 05:52:25 | 3469 |
| Peachland | 05:47:22 | -12.3 | AT | Down | 15.2 | 160.9 | Really Low | 05:42:18 - 05:52:26 | 3457 |
| Summerland | 05:47:22 | -12.5 | AT | Down | 15.3 | 161.0 | Really Low | 05:42:18 - 05:52:26 | 3453 |
| Penticton | 05:47:22 | -12.5 | AT | Down | 15.4 | 161.1 | Really Low | 05:42:18 - 05:52:26 | 3453 |
| Oliver | 05:47:22 | -12.9 | AT | Down | 15.8 | 161.1 | Really Low | 05:42:18 - 05:52:26 | 3439 |
| Anarchist Mountain Observatory | 05:47:22 | -13.1 | AT | Down | 16.0 | 161.2 | Really Low | 05:42:18 - 05:52:26 | 3437 |
| Okanogan | 05:47:23 | -13.5 | AT | Down | 16.5 | 161.0 | Really Low | 05:42:19 - 05:52:27 | 3404 |
| Brewster | 05:47:23 | -13.7 | AT | Down | 16.7 | 160.8 | Really Low | 05:42:19 - 05:52:27 | 3387 |
| Manson/Chelan | 05:47:25 | -13.8 | AT | Down | 16.9 | 160.4 | Really Low | 05:42:21 - 05:52:29 | 3370 |
| Dunrhomin | 05:46:38 | -25.1 | Dark | Down | 26.6 | 174.2 | Low | 05:41:34 - 05:51:42 | 3353 |
| Wenatchee | 05:47:26 | -14.1 | AT | Down | 17.3 | 160.2 | Really Low | 05:42:22 - 05:52:30 | 3344 |
| Nikitin | 05:46:38 | -25.3 | Dark | Down | 26.8 | 174.2 | Low | 05:41:34 - 05:51:42 | 3343 |
| CU-SBO | 05:46:38 | -25.3 | Dark | Down | 26.9 | 174.1 | Low | 05:41:34 - 05:51:42 | 3338 |
| Ellensburg | 05:47:27 | -14.4 | AT | Down | 17.6 | 159.9 | Really Low | 05:42:23 - 05:52:31 | 3321 |
| Victoria | 05:47:33 | -12.1 | AT | Down | 15.5 | 157.5 | Really Low | 05:42:29 - 05:52:37 | 3317 |
| PNWRO | 05:47:23 | -15.8 | AT | Down | 18.9 | 161.4 | Really Low | 05:42:19 - 05:52:27 | 3316 |
| Yakima | 05:47:27 | -14.7 | AT | Down | 18.0 | 159.9 | Really Low | 05:42:23 - 05:52:31 | 3302 |
| Toppenish/White Swan | 05:47:27 | -15.0 | AT | Down | 18.2 | 160.0 | Really Low | 05:42:23 - 05:52:31 | 3296 |
| The Dalles | 05:47:31 | -15.3 | AT | Down | 18.8 | 159.2 | Really Low | 05:42:27 - 05:52:35 | 3239 |
| Maupin | 05:47:30 | -15.7 | AT | Down | 19.2 | 159.3 | Really Low | 05:42:26 - 05:52:34 | 3222 |
| Sisters | 05:47:33 | -16.3 | AT | Down | 19.9 | 158.7 | Really Low | 05:42:29 - 05:52:37 | 3166 |
| Bend | 05:47:32 | -16.6 | AT | Down | 20.2 | 158.9 | Low | 05:42:28 - 05:52:36 | 3161 |
| Oregon Observatory | 05:47:32 | -16.7 | AT | Down | 20.3 | 158.8 | Low | 05:42:28 - 05:52:36 | 3149 |
| Chiloquin | 05:47:35 | -17.6 | AT | Down | 21.4 | 158.2 | Low | 05:42:31 - 05:52:39 | 3069 |
| Cedarville | 05:47:30 | -19.2 | Dark | Down | 22.8 | 159.6 | Low | 05:42:26 - 05:52:34 | 3060 |
| Klamath Falls | 05:47:35 | -18.0 | AT | Down | 21.8 | 158.2 | Low | 05:42:31 - 05:52:39 | 3053 |
| Fall River/Burney | 05:47:34 | -19.1 | Dark | Down | 23.0 | 158.4 | Low | 05:42:30 - 05:52:38 | 3000 |
| Gimple | 05:47:33 | -20.1 | Dark | Down | 24.0 | 158.8 | Low | 05:42:29 - 05:52:37 | 2964 |
| Greenville | 05:47:33 | -20.0 | Dark | Down | 23.9 | 158.7 | Low | 05:42:29 - 05:52:37 | 2962 |
| Reno | 05:47:30 | -21.0 | Dark | Down | 24.8 | 159.7 | Low | 05:42:26 - 05:52:34 | 2960 |
| Portola | 05:47:32 | -20.5 | Dark | Down | 24.4 | 159.1 | Low | 05:42:28 - 05:52:36 | 2957 |
| Quincy | 05:47:34 | -20.2 | Dark | Down | 24.1 | 158.6 | Low | 05:42:30 - 05:52:38 | 2950 |
| Yerington | 05:47:29 | -21.7 | Dark | Down | 25.5 | 160.2 | Low | 05:42:25 - 05:52:33 | 2946 |
| Carson City | 05:47:31 | -21.3 | Dark | Down | 25.1 | 159.6 | Low | 05:42:27 - 05:52:35 | 2940 |
| Hawthorne | 05:47:27 | -22.4 | Dark | Down | 26.1 | 160.6 | Low | 05:42:23 - 05:52:31 | 2934 |
| Gardnerville | 05:47:31 | -21.5 | Dark | Down | 25.4 | 159.6 | Low | 05:42:27 - 05:52:35 | 2927 |
| Beatty | 05:47:21 | -24.5 | Dark | Down | 28.1 | 162.2 | Low | 05:42:17 - 05:52:25 | 2889 |
| Lee Vining | 05:47:29 | -22.6 | Dark | Down | 26.5 | 160.1 | Low | 05:42:25 - 05:52:33 | 2888 |
| Patrick | 05:47:11 | -26.9 | Dark | Down | 30.1 | 164.9 | Up | 05:42:07 - 05:52:15 | 2877 |
| Bishop | 05:47:27 | -23.4 | Dark | Down | 27.2 | 160.7 | Low | 05:42:23 - 05:52:31 | 2872 |
| Laughlin/Bullhead City | 05:47:14 | -26.9 | Dark | Down | 30.2 | 164.1 | Up | 05:42:10 - 05:52:18 | 2843 |
| George/Scottsdale | 05:47:04 | -29.2 | Dark | Down | 32.2 | 166.7 | Up | 05:42:00 - 05:52:08 | 2825 |
| Lake Havasu City | 05:47:13 | -27.6 | Dark | Down | 30.9 | 164.3 | Up | 05:42:09 - 05:52:17 | 2808 |
| Idyllwild | 05:47:22 | -27.2 | Dark | Down | 31.1 | 161.7 | Up | 05:42:18 - 05:52:26 | 2695 |
| Calipatria | 05:47:18 | -28.3 | Dark | Down | 32.0 | 162.8 | Up | 05:42:14 - 05:52:22 | 2687 |
| Yuma | 05:47:15 | -29.0 | Dark | Down | 32.6 | 163.7 | Up | 05:42:11 - 05:52:19 | 2684 |
| Wildwood | 05:47:28 | -26.1 | Dark | Down | 30.2 | 159.9 | Up | 05:42:24 - 05:52:32 | 2663 |
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 42355, (2027/06/04 05:45UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 7.91 176 7Del Sco 16:00:20.0 -22:37:19 2.3 0.58 176 PPM 264830 15:53:55.9 -23:58:42 5.4 1.44 176 PPM 264901 15:56:47.9 -23:11:03 8.1 0.41 176 PPM 264952 15:59:23.9 -23:03:02 9.8 0.31 176 PPM 264939 15:58:36.9 -22:57:15 10.1 0.10 176 42355 15:58:11.0 -22:55:15 15.3 176 Positions are for J2000
Event circumstances last updated at 2024/06/21 21:28:38 UT
Marc W. Buie, Southwest Research Institute