Event between (525816) 05SF278 and star GA1040:00550616 with event index number of 2167463
Geocentric closest approach at 2028/03/23 04:40:00 UTC
J2000 position of star is 04:39:54.2 +15:30:16
Equinox of date position of star is 04:41:13.3 +15:32:53
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon.
Moon is 8% illuminated.
Apparent brightness V=22.4
[RECON map]
Object is 35.6 AU from the Sun
and 36.0 AU from the Earth.
Apparent velocity is 16.7
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is
1845 km.
The sky-plane scale is
26080.1 km/arcsec.
The object has an absolute magnitude Hv=6.7
Diameter=279.3 km assuming a 5% albedo -- 16.4 sec chord
Diameter=114.0 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 7:4EEE
Star training set for 525816, (2028/03/23 04:33UT) Object RA Dec mag sep mel Aldebaran 04:37:32.6 +16:33:50 0.8 1.39 100 Bellatrix 05:26:38.8 +06:22:22 1.6 14.38 111 91Sig1Tau 04:40:46.1 +15:51:12 5.3 0.35 100 PPM 120087 04:39:08.5 +15:12:03 8.0 0.67 100 PPM 120103 04:40:35.0 +15:37:29 9.8 0.23 100 525816 04:41:30.9 +15:33:27 15.8 101 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 38.8 km
RECON observability=0.9 and success probability=4.3%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Sleaford | 04:45:19 | -28.6 | Dark | Down | 20.4 | 269.3 | Low | 04:34:13 - 04:56:24 | -4295 |
Kamloops | 04:44:57 | -22.6 | Dark | Down | 29.5 | 258.1 | Low | 04:33:52 - 04:56:03 | -4531 |
Kelowna | 04:45:01 | -23.5 | Dark | Down | 29.1 | 259.3 | Low | 04:33:55 - 04:56:06 | -4612 |
Peachland | 04:45:00 | -23.4 | Dark | Down | 29.3 | 259.1 | Low | 04:33:55 - 04:56:06 | -4624 |
Summerland | 04:45:01 | -23.6 | Dark | Down | 29.3 | 259.3 | Low | 04:33:55 - 04:56:06 | -4639 |
Penticton | 04:44:59 | -23.7 | Dark | Down | 29.2 | 259.4 | Low | 04:33:54 - 04:56:05 | -4645 |
Oliver | 04:45:02 | -23.9 | Dark | Down | 29.3 | 259.6 | Low | 04:33:57 - 04:56:08 | -4682 |
Anarchist Mountain Observatory | 04:45:03 | -24.1 | Dark | Down | 29.2 | 259.9 | Low | 04:33:57 - 04:56:08 | -4698 |
Victoria | 04:44:54 | -22.0 | Dark | Down | 31.9 | 256.8 | Up | 04:33:48 - 04:55:59 | -4758 |
Okanogan | 04:45:03 | -24.3 | Dark | Down | 29.4 | 260.1 | Low | 04:33:57 - 04:56:08 | -4766 |
Brewster | 04:45:04 | -24.3 | Dark | Down | 29.6 | 260.0 | Low | 04:33:59 - 04:56:10 | -4795 |
Manson/Chelan | 04:45:03 | -24.2 | Dark | Down | 29.9 | 259.9 | Low | 04:33:57 - 04:56:08 | -4817 |
Wenatchee | 04:45:03 | -24.4 | Dark | Down | 30.1 | 260.0 | Up | 04:33:58 - 04:56:09 | -4867 |
Ellensburg | 04:45:04 | -24.5 | Dark | Down | 30.3 | 260.1 | Up | 04:33:58 - 04:56:09 | -4911 |
Yakima | 04:45:05 | -24.7 | Dark | Down | 30.4 | 260.3 | Up | 04:34:00 - 04:56:11 | -4954 |
Toppenish/White Swan | 04:45:05 | -24.9 | Dark | Down | 30.3 | 260.5 | Up | 04:34:00 - 04:56:11 | -4976 |
PNWRO | 04:45:11 | -26.0 | Dark | Down | 29.3 | 261.9 | Low | 04:34:05 - 04:56:16 | -5010 |
The Dalles | 04:45:06 | -24.8 | Dark | Down | 31.0 | 260.4 | Up | 04:34:00 - 04:56:11 | -5060 |
Maupin | 04:45:06 | -25.1 | Dark | Down | 31.0 | 260.7 | Up | 04:34:00 - 04:56:11 | -5104 |
Sisters | 04:45:07 | -25.2 | Dark | Down | 31.5 | 260.9 | Up | 04:34:02 - 04:56:13 | -5198 |
Bend | 04:45:08 | -25.5 | Dark | Down | 31.3 | 261.2 | Up | 04:34:02 - 04:56:13 | -5222 |
Oregon Observatory | 04:45:06 | -25.5 | Dark | Down | 31.4 | 261.2 | Up | 04:34:01 - 04:56:12 | -5241 |
Chiloquin | 04:45:08 | -25.9 | Dark | Down | 31.9 | 261.7 | Up | 04:34:02 - 04:56:13 | -5383 |
Klamath Falls | 04:45:09 | -26.1 | Dark | Down | 31.9 | 262.0 | Up | 04:34:03 - 04:56:14 | -5419 |
Cedarville | 04:45:16 | -27.5 | Dark | Down | 30.8 | 263.6 | Up | 04:34:10 - 04:56:21 | -5490 |
Dunrhomin | 04:45:50 | -37.5 | Dark | Down | 19.4 | 274.2 | Really Low | 04:34:44 - 04:56:55 | -5501 |
Nikitin | 04:45:50 | -37.6 | Dark | Down | 19.4 | 274.3 | Really Low | 04:34:45 - 04:56:56 | -5521 |
CU-SBO | 04:45:50 | -37.6 | Dark | Down | 19.4 | 274.2 | Really Low | 04:34:45 - 04:56:56 | -5529 |
Fall River/Burney | 04:45:13 | -26.9 | Dark | Down | 31.8 | 263.0 | Up | 04:34:08 - 04:56:19 | -5545 |
Greenville | 04:45:13 | -27.7 | Dark | Down | 31.5 | 263.9 | Up | 04:34:08 - 04:56:19 | -5642 |
Gimple | 04:45:14 | -27.7 | Dark | Down | 31.5 | 263.9 | Up | 04:34:08 - 04:56:19 | -5642 |
Quincy | 04:45:16 | -27.8 | Dark | Down | 31.5 | 264.0 | Up | 04:34:11 - 04:56:22 | -5664 |
Portola | 04:45:16 | -28.2 | Dark | Down | 31.2 | 264.4 | Up | 04:34:10 - 04:56:21 | -5676 |
Reno | 04:45:20 | -28.7 | Dark | Down | 30.7 | 265.0 | Up | 04:34:14 - 04:56:25 | -5703 |
Carson City | 04:45:20 | -28.9 | Dark | Down | 30.7 | 265.2 | Up | 04:34:15 - 04:56:26 | -5741 |
Yerington | 04:45:21 | -29.5 | Dark | Down | 30.2 | 265.8 | Up | 04:34:15 - 04:56:26 | -5760 |
Gardnerville | 04:45:20 | -29.1 | Dark | Down | 30.7 | 265.4 | Up | 04:34:15 - 04:56:26 | -5768 |
Hawthorne | 04:45:24 | -30.1 | Dark | Down | 29.8 | 266.4 | Low | 04:34:19 - 04:56:30 | -5808 |
Lee Vining | 04:45:24 | -30.0 | Dark | Down | 30.3 | 266.4 | Up | 04:34:18 - 04:56:29 | -5872 |
Bishop | 04:45:24 | -30.8 | Dark | Down | 29.7 | 267.2 | Low | 04:34:19 - 04:56:30 | -5934 |
Beatty | 04:45:31 | -32.2 | Dark | Down | 28.4 | 268.5 | Low | 04:34:26 - 04:56:37 | -5976 |
Patrick | 04:45:40 | -35.0 | Dark | Down | 26.0 | 271.0 | Low | 04:34:35 - 04:56:46 | -6118 |
Laughlin/Bullhead City | 04:45:39 | -34.6 | Dark | Down | 26.6 | 270.7 | Low | 04:34:33 - 04:56:44 | -6150 |
Lake Havasu City | 04:45:40 | -35.1 | Dark | Down | 26.4 | 271.2 | Low | 04:34:35 - 04:56:46 | -6222 |
George/Scottsdale | 04:45:46 | -37.3 | Dark | Down | 24.3 | 272.9 | Low | 04:34:41 - 04:56:52 | -6285 |
Wildwood | 04:45:28 | -32.2 | Dark | Down | 30.0 | 269.0 | Low | 04:34:22 - 04:56:33 | -6293 |
Idyllwild | 04:45:34 | -33.8 | Dark | Down | 28.4 | 270.3 | Low | 04:34:29 - 04:56:40 | -6322 |
Calipatria | 04:45:37 | -34.9 | Dark | Down | 27.4 | 271.2 | Low | 04:34:31 - 04:56:42 | -6381 |
Yuma | 04:45:40 | -35.8 | Dark | Down | 26.6 | 271.9 | Low | 04:34:34 - 04:56:45 | -6422 |
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 525816, (2028/03/23 04:33UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 1.39 100 Bellatrix 05:25:07.8 +06:20:58 1.6 14.38 111 91Sig1Tau 04:39:09.2 +15:47:58 5.3 0.35 100 PPM 120087 04:37:32.1 +15:08:46 8.0 0.67 100 PPM 120103 04:38:58.3 +15:34:15 9.8 0.23 100 525816 04:39:54.2 +15:30:16 15.8 101 Positions are for J2000
Event circumstances last updated at 2023/02/07 03:47:15 UT
Marc W. Buie, Southwest Research Institute