Event between (65489) Ceto and star GA0900:04388032 with event index number of 1149232
Geocentric closest approach at 2021/05/05 04:52:24 UTC
J2000 position of star is 15:50:53.9 +00:55:10
Equinox of date position of star is 15:51:58.4 +00:51:25
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon.
Moon is 36% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 41.3 AU from the Sun
and 40.4 AU from the Earth.
The TNO is moving 25.1
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is
1645 km.
The sky-plane scale is
29266.2 km/arcsec.
The TNO has an absolute magnitude Hv=6.4
Diameter=309.0 km assuming a 5% albedo -- 12.3 sec chord
Diameter=126.2 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is CENTAURR
Star training set for 65489, (2021/05/05 04:52UT) Object RA Dec mag sep mel Antares 16:30:43.2 -26:28:39 0.9 28.88 81 Unukalhai 15:45:19.3 +06:21:35 2.6 5.75 101 25 Ser 15:47:12.0 -01:52:11 5.3 2.98 98 PPM 161926 15:49:14.2 +01:30:23 8.3 0.95 98 PPM 161999 15:53:29.7 +00:40:21 9.4 0.42 97 PPM 161976 15:52:28.2 +01:05:29 11.5 0.26 98 65489 15:51:59.1 +00:51:23 15.6 97 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 26.1 km
RECON observability=0.8 and success probability=13.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Clarence Fulton | 04:55:41 | -12.8 | AT | Down | 19.5 | 113.5 | Really Low | 04:48:02 - 05:03:20 | -1305 |
| Kelowna | 04:55:42 | -13.0 | AT | Down | 19.6 | 113.3 | Really Low | 04:48:03 - 05:03:21 | -1343 |
| Peachland | 04:55:43 | -12.9 | AT | Down | 19.4 | 113.0 | Really Low | 04:48:04 - 05:03:22 | -1356 |
| Summerland | 04:55:42 | -13.1 | AT | Down | 19.5 | 113.0 | Really Low | 04:48:03 - 05:03:21 | -1369 |
| Penticton | 04:55:43 | -13.2 | AT | Down | 19.6 | 113.1 | Really Low | 04:48:04 - 05:03:22 | -1374 |
| Oliver | 04:55:43 | -13.5 | AT | Down | 19.8 | 113.0 | Really Low | 04:48:04 - 05:03:22 | -1407 |
| Anarchist Mountain Observatory | 04:55:44 | -13.7 | AT | Down | 20.0 | 113.1 | Really Low | 04:48:05 - 05:03:23 | -1420 |
| Tonasket | 04:55:44 | -13.9 | AT | Down | 20.0 | 112.9 | Low | 04:48:05 - 05:03:23 | -1450 |
| Okanogan | 04:55:45 | -14.0 | AT | Down | 20.1 | 112.7 | Low | 04:48:06 - 05:03:24 | -1484 |
| Victoria | 04:55:50 | -12.1 | AT | Down | 17.7 | 109.6 | Really Low | 04:48:11 - 05:03:29 | -1509 |
| Brewster | 04:55:45 | -14.1 | AT | Down | 20.1 | 112.4 | Low | 04:48:06 - 05:03:24 | -1512 |
| Manson/Chelan | 04:55:47 | -14.1 | AT | Down | 19.9 | 112.0 | Really Low | 04:48:08 - 05:03:26 | -1535 |
| Wenatchee | 04:55:47 | -14.4 | AT | Down | 20.0 | 111.7 | Really Low | 04:48:08 - 05:03:26 | -1582 |
| Ellensburg | 04:55:49 | -14.6 | AT | Down | 20.0 | 111.4 | Low | 04:48:10 - 05:03:28 | -1624 |
| Yakima | 04:55:49 | -14.8 | AT | Down | 20.1 | 111.3 | Low | 04:48:10 - 05:03:28 | -1663 |
| Pasco | 04:55:48 | -15.8 | AT | Down | 21.2 | 112.3 | Low | 04:48:09 - 05:03:27 | -1679 |
| Toppenish/White Swan | 04:55:50 | -15.1 | AT | Down | 20.3 | 111.3 | Low | 04:48:11 - 05:03:29 | -1682 |
| PNWRO | 04:55:48 | -16.1 | AT | Down | 21.4 | 112.4 | Low | 04:48:09 - 05:03:27 | -1700 |
| Goldendale | 04:55:51 | -15.2 | AT | Down | 20.3 | 110.8 | Low | 04:48:12 - 05:03:30 | -1740 |
| The Dalles | 04:55:51 | -15.2 | AT | Down | 20.1 | 110.4 | Low | 04:48:12 - 05:03:30 | -1766 |
| Maupin | 04:55:53 | -15.6 | AT | Down | 20.3 | 110.4 | Low | 04:48:14 - 05:03:32 | -1806 |
| Redmond | 04:55:53 | -16.1 | AT | Down | 20.6 | 110.0 | Low | 04:48:14 - 05:03:32 | -1895 |
| Sisters | 04:55:54 | -15.9 | AT | Down | 20.3 | 109.7 | Low | 04:48:15 - 05:03:33 | -1897 |
| Bend | 04:55:54 | -16.2 | AT | Down | 20.6 | 109.8 | Low | 04:48:15 - 05:03:33 | -1917 |
| Oregon Observatory | 04:55:55 | -16.3 | AT | Down | 20.5 | 109.6 | Low | 04:48:16 - 05:03:34 | -1936 |
| La Pine/Gilchrist | 04:55:55 | -16.4 | AT | Down | 20.6 | 109.5 | Low | 04:48:16 - 05:03:34 | -1957 |
| North Lake | 04:55:55 | -17.0 | AT | Down | 21.1 | 109.8 | Low | 04:48:16 - 05:03:34 | -1993 |
| Paisley | 04:55:55 | -17.6 | AT | Down | 21.5 | 109.9 | Low | 04:48:16 - 05:03:34 | -2043 |
| Dunrhomin | 04:55:30 | -26.7 | Dark | Down | 32.9 | 121.5 | Up | 04:47:51 - 05:03:09 | -2049 |
| Chiloquin | 04:55:57 | -17.0 | AT | Down | 20.7 | 108.9 | Low | 04:48:18 - 05:03:36 | -2071 |
| Lakeview | 04:55:56 | -18.0 | Dark | Down | 21.9 | 109.9 | Low | 04:48:17 - 05:03:35 | -2091 |
| Klamath Falls | 04:55:57 | -17.2 | AT | Down | 20.8 | 108.8 | Low | 04:48:18 - 05:03:36 | -2104 |
| Cedarville | 04:55:56 | -18.6 | Dark | Down | 22.2 | 109.8 | Low | 04:48:17 - 05:03:35 | -2155 |
| Fall River/Burney | 04:55:59 | -18.2 | Dark | Down | 21.5 | 108.7 | Low | 04:48:20 - 05:03:38 | -2218 |
| Susanville | 04:55:59 | -19.1 | Dark | Down | 22.2 | 109.0 | Low | 04:48:20 - 05:03:38 | -2273 |
| Gimple | 04:55:59 | -19.2 | Dark | Down | 22.2 | 108.7 | Low | 04:48:20 - 05:03:38 | -2304 |
| Greenville | 04:55:59 | -19.1 | Dark | Down | 22.1 | 108.7 | Low | 04:48:20 - 05:03:38 | -2304 |
| Quincy | 04:55:59 | -19.3 | Dark | Down | 22.2 | 108.6 | Low | 04:48:20 - 05:03:38 | -2325 |
| Portola | 04:55:58 | -19.6 | Dark | Down | 22.6 | 108.9 | Low | 04:48:19 - 05:03:37 | -2332 |
| Reno | 04:55:58 | -20.2 | Dark | Down | 23.1 | 109.3 | Low | 04:48:19 - 05:03:37 | -2350 |
| Carson City | 04:55:59 | -20.4 | Dark | Down | 23.3 | 109.1 | Low | 04:48:20 - 05:03:38 | -2387 |
| Yerington | 04:55:57 | -20.9 | Dark | Down | 23.8 | 109.5 | Low | 04:48:18 - 05:03:36 | -2398 |
| Gardnerville | 04:55:59 | -20.6 | Dark | Down | 23.4 | 109.1 | Low | 04:48:20 - 05:03:38 | -2411 |
| Hawthorne | 04:55:58 | -21.5 | Dark | Down | 24.3 | 109.7 | Low | 04:48:19 - 05:03:37 | -2439 |
| Tonopah | 04:55:56 | -22.6 | Dark | Down | 25.5 | 110.6 | Low | 04:48:17 - 05:03:35 | -2466 |
| Lee Vining | 04:55:59 | -21.6 | Dark | Down | 24.2 | 109.1 | Low | 04:48:20 - 05:03:38 | -2503 |
| Bishop | 04:55:58 | -22.5 | Dark | Down | 24.9 | 109.4 | Low | 04:48:19 - 05:03:37 | -2554 |
| Beatty | 04:55:56 | -23.7 | Dark | Down | 26.3 | 110.4 | Low | 04:48:17 - 05:03:35 | -2579 |
| Indian Springs | 04:55:54 | -24.5 | Dark | Down | 27.2 | 111.0 | Low | 04:48:15 - 05:03:33 | -2596 |
| Henderson | 04:55:53 | -25.3 | Dark | Down | 27.9 | 111.3 | Low | 04:48:14 - 05:03:32 | -2641 |
| Patrick | 04:55:52 | -26.4 | Dark | Down | 29.0 | 111.8 | Low | 04:48:13 - 05:03:31 | -2687 |
| Kingman/Dolan Springs | 04:55:53 | -26.5 | Dark | Down | 28.9 | 111.5 | Low | 04:48:14 - 05:03:32 | -2714 |
| Laughlin/Bullhead City | 04:55:53 | -26.2 | Dark | Down | 28.5 | 111.1 | Low | 04:48:14 - 05:03:32 | -2724 |
| Mohave Valley | 04:55:53 | -26.4 | Dark | Down | 28.6 | 111.0 | Low | 04:48:14 - 05:03:32 | -2753 |
| Lake Havasu City | 04:55:53 | -26.8 | Dark | Down | 29.0 | 111.0 | Low | 04:48:14 - 05:03:32 | -2790 |
| CPSLO | 04:56:04 | -22.6 | Dark | Down | 23.8 | 106.9 | Low | 04:48:25 - 05:03:43 | -2799 |
| Parker | 04:55:53 | -27.1 | Dark | Down | 29.1 | 110.8 | Low | 04:48:14 - 05:03:32 | -2826 |
| George/Scottsdale | 04:55:49 | -28.8 | Dark | Down | 31.1 | 112.4 | Up | 04:48:10 - 05:03:28 | -2829 |
| Blythe | 04:55:54 | -27.3 | Dark | Down | 29.1 | 110.3 | Low | 04:48:15 - 05:03:33 | -2886 |
| Wildwood | 04:56:01 | -24.6 | Dark | Down | 25.8 | 107.8 | Low | 04:48:22 - 05:03:40 | -2897 |
| Idyllwild | 04:55:58 | -26.0 | Dark | Down | 27.4 | 108.9 | Low | 04:48:19 - 05:03:37 | -2906 |
| Calipatria | 04:55:57 | -27.1 | Dark | Down | 28.5 | 109.4 | Low | 04:48:18 - 05:03:36 | -2952 |
| Yuma | 04:55:55 | -27.9 | Dark | Down | 29.4 | 109.8 | Low | 04:48:16 - 05:03:34 | -2983 |
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 65489, (2021/05/05 04:52UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 28.88 81 Unukalhai 15:44:16.3 +06:25:33 2.6 5.75 101 25 Ser 15:46:05.6 -01:48:16 5.3 2.98 98 PPM 161926 15:48:09.2 +01:34:15 8.3 0.95 98 PPM 161999 15:52:24.3 +00:44:06 9.4 0.42 97 PPM 161976 15:51:23.0 +01:09:15 11.5 0.26 98 65489 15:50:53.9 +00:55:10 15.6 98 Positions are for J2000
Event circumstances last updated at 2021/02/06 20:57:26 UT
Marc W. Buie, Southwest Research Institute