Event between (15820) 94TB and star GA1220:02005700 with event index number of 2541232
Geocentric closest approach at 2028/12/15 13:16:28 UTC
J2000 position of star is 05:39:51.6 +33:17:55
Equinox of date position of star is 05:41:27.0 +33:18:36
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 169 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=22.0
[RECON map]
Object is 27.8 AU from the Sun
and 26.8 AU from the Earth.
Apparent velocity is 23.9
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 335 seconds.
The 1-sigma cross-track error in the shadow position is
1682 km.
The sky-plane scale is
19450.1 km/arcsec.
The object has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 7.6 sec chord
Diameter=75.0 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 3:2E
Star training set for 15820, (2028/12/15 13:16UT) Object RA Dec mag sep mel Aldebaran 04:37:35.1 +16:33:55 0.8 22.12 169 Alnath 05:28:07.5 +28:37:46 1.6 5.52 174 PPM 070534 05:35:21.2 +32:49:07 6.5 1.43 170 PPM 070636 05:39:40.5 +33:34:27 7.6 0.51 169 PPM 070697 05:42:22.5 +33:31:29 8.6 0.25 168 15820 05:41:46.0 +33:18:43 15.4 168 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
2.7 sigma about the mid-time.
The median site spacing is 19.5 km
RECON observability=0.9 and success probability=0.1%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Sleaford | 13:13:31 | -16.1 | AT | Down | 24.4 | 293.5 | Low | 12:58:31 - 13:28:31 | 7685 |
| Kamloops | 13:13:32 | -24.5 | Dark | Down | 32.5 | 284.5 | Up | 12:58:32 - 13:28:32 | 7048 |
| Kelowna | 13:13:29 | -23.9 | Dark | Down | 31.7 | 285.6 | Up | 12:58:29 - 13:28:29 | 7021 |
| Peachland | 13:13:29 | -24.0 | Dark | Down | 31.9 | 285.4 | Up | 12:58:29 - 13:28:29 | 7001 |
| Summerland | 13:13:28 | -24.0 | Dark | Down | 31.8 | 285.6 | Up | 12:58:28 - 13:28:28 | 6993 |
| Penticton | 13:13:28 | -23.9 | Dark | Down | 31.7 | 285.7 | Up | 12:58:28 - 13:28:28 | 6993 |
| Oliver | 13:13:26 | -23.8 | Dark | Down | 31.6 | 285.9 | Up | 12:58:26 - 13:28:26 | 6966 |
| Anarchist Mountain Observatory | 13:13:26 | -23.7 | Dark | Down | 31.4 | 286.1 | Up | 12:58:26 - 13:28:26 | 6961 |
| Dunrhomin | 13:12:53 | -11.8 | NT | Down | 18.9 | 298.1 | Really Low | 12:57:53 - 13:27:53 | 6914 |
| Okanogan | 13:13:23 | -23.7 | Dark | Down | 31.4 | 286.4 | Up | 12:58:23 - 13:28:23 | 6903 |
| Nikitin | 13:12:53 | -11.7 | NT | Down | 18.8 | 298.1 | Really Low | 12:57:53 - 13:27:53 | 6899 |
| CU-SBO | 13:12:53 | -11.8 | NT | Down | 18.8 | 298.1 | Really Low | 12:57:53 - 13:27:53 | 6891 |
| Brewster | 13:13:23 | -23.8 | Dark | Down | 31.4 | 286.4 | Up | 12:58:23 - 13:28:23 | 6874 |
| Manson/Chelan | 13:13:23 | -24.0 | Dark | Down | 31.6 | 286.3 | Up | 12:58:23 - 13:28:23 | 6844 |
| Wenatchee | 13:13:22 | -24.1 | Dark | Down | 31.6 | 286.4 | Up | 12:58:22 - 13:28:22 | 6800 |
| Victoria | 13:13:28 | -26.3 | Dark | Down | 33.9 | 283.8 | Up | 12:58:28 - 13:28:28 | 6769 |
| Ellensburg | 13:13:20 | -24.2 | Dark | Down | 31.6 | 286.6 | Up | 12:58:20 - 13:28:20 | 6759 |
| PNWRO | 13:13:16 | -22.9 | Dark | Down | 30.3 | 288.1 | Up | 12:58:16 - 13:28:16 | 6748 |
| Yakima | 13:13:19 | -24.1 | Dark | Down | 31.5 | 286.8 | Up | 12:58:19 - 13:28:19 | 6726 |
| Toppenish/White Swan | 13:13:18 | -24.0 | Dark | Down | 31.4 | 287.0 | Up | 12:58:18 - 13:28:18 | 6716 |
| The Dalles | 13:13:16 | -24.4 | Dark | Down | 31.7 | 287.0 | Up | 12:58:16 - 13:28:16 | 6622 |
| Maupin | 13:13:15 | -24.3 | Dark | Down | 31.5 | 287.3 | Up | 12:58:15 - 13:28:15 | 6593 |
| Sisters | 13:13:13 | -24.5 | Dark | Down | 31.6 | 287.5 | Up | 12:58:13 - 13:28:13 | 6502 |
| Bend | 13:13:12 | -24.3 | Dark | Down | 31.3 | 287.8 | Up | 12:58:12 - 13:28:12 | 6493 |
| Oregon Observatory | 13:13:11 | -24.3 | Dark | Down | 31.3 | 287.8 | Up | 12:58:11 - 13:28:11 | 6473 |
| Chiloquin | 13:13:08 | -24.4 | Dark | Down | 31.2 | 288.4 | Up | 12:58:08 - 13:28:08 | 6347 |
| Cedarville | 13:13:04 | -23.0 | Dark | Down | 29.7 | 289.8 | Low | 12:58:04 - 13:28:04 | 6333 |
| Klamath Falls | 13:13:07 | -24.3 | Dark | Down | 31.1 | 288.6 | Up | 12:58:07 - 13:28:07 | 6322 |
| Fall River/Burney | 13:13:03 | -23.8 | Dark | Down | 30.4 | 289.4 | Up | 12:58:03 - 13:28:03 | 6239 |
| Gimple | 13:13:00 | -23.2 | Dark | Down | 29.7 | 290.2 | Low | 12:58:00 - 13:28:00 | 6186 |
| Reno | 13:12:58 | -22.3 | Dark | Down | 28.8 | 291.0 | Low | 12:57:58 - 13:27:58 | 6183 |
| Greenville | 13:13:00 | -23.3 | Dark | Down | 29.8 | 290.2 | Low | 12:58:00 - 13:28:00 | 6182 |
| Portola | 13:13:00 | -22.9 | Dark | Down | 29.3 | 290.6 | Low | 12:58:00 - 13:28:00 | 6176 |
| Yerington | 13:12:56 | -21.7 | Dark | Down | 28.1 | 291.6 | Low | 12:57:56 - 13:27:56 | 6165 |
| Quincy | 13:13:00 | -23.3 | Dark | Down | 29.7 | 290.3 | Low | 12:58:00 - 13:28:00 | 6165 |
| Carson City | 13:12:56 | -22.3 | Dark | Down | 28.7 | 291.2 | Low | 12:57:56 - 13:27:56 | 6153 |
| Hawthorne | 13:12:54 | -21.2 | Dark | Down | 27.6 | 292.1 | Low | 12:57:54 - 13:27:54 | 6150 |
| Gardnerville | 13:12:56 | -22.2 | Dark | Down | 28.5 | 291.4 | Low | 12:57:56 - 13:27:56 | 6135 |
| Patrick | 13:12:43 | -16.8 | AT | Down | 22.9 | 295.5 | Low | 12:57:43 - 13:27:43 | 6114 |
| Beatty | 13:12:48 | -19.4 | Dark | Down | 25.6 | 293.7 | Low | 12:57:48 - 13:27:48 | 6100 |
| Lee Vining | 13:12:53 | -21.5 | Dark | Down | 27.7 | 292.1 | Low | 12:57:53 - 13:27:53 | 6080 |
| George/Scottsdale | 13:12:38 | -14.7 | AT | Down | 20.6 | 297.0 | Low | 12:57:38 - 13:27:38 | 6071 |
| Bishop | 13:12:52 | -20.8 | Dark | Down | 27.0 | 292.7 | Low | 12:57:52 - 13:27:52 | 6063 |
| Laughlin/Bullhead City | 13:12:43 | -17.3 | AT | Down | 23.3 | 295.3 | Low | 12:57:43 - 13:27:43 | 6059 |
| Lake Havasu City | 13:12:41 | -16.9 | AT | Down | 22.8 | 295.7 | Low | 12:57:41 - 13:27:41 | 6014 |
| Yuma | 13:12:37 | -16.6 | AT | Down | 22.3 | 296.2 | Low | 12:57:37 - 13:27:37 | 5845 |
| Calipatria | 13:12:38 | -17.4 | AT | Down | 23.1 | 295.7 | Low | 12:57:38 - 13:27:38 | 5837 |
| Idyllwild | 13:12:41 | -18.5 | Dark | Down | 24.3 | 295.0 | Low | 12:57:41 - 13:27:41 | 5832 |
| Wildwood | 13:12:43 | -20.1 | Dark | Down | 25.8 | 294.1 | Low | 12:57:43 - 13:27:43 | 5771 |
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 15820, (2028/12/15 13:16UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 22.12 169 Alnath 05:26:17.6 +28:36:23 1.6 5.52 174 PPM 070534 05:33:27.4 +32:48:03 6.5 1.43 170 PPM 070636 05:37:45.9 +33:33:33 7.6 0.51 169 PPM 070697 05:40:27.9 +33:30:42 8.6 0.25 168 15820 05:39:51.6 +33:17:55 15.4 169 Positions are for J2000
Event circumstances last updated at 2024/02/27 04:13:11 UT
Marc W. Buie, Southwest Research Institute