Event between 01KO77 and star GA0740:13390283 with event index number of 186222
Geocentric closest approach at 2019/04/28 09:31:30 UTC
J2000 position of star is 17:54:22.4 -15:17:13
Equinox of date position of star is 17:55:28.2 -15:17:21
Stellar brightness G=14.9,
use SENSEUP=128
Star is 56 degrees from the moon.
Moon is 36% illuminated.
TNO apparent brightness V=23.4
[RECON map]
TNO is 37.5 AU from the Sun
and 36.9 AU from the Earth.
The TNO is moving 14.2
km/sec on the sky relative to the star, or,
1.9 arcsec/hr.
The 1-sigma error in the time of the event is 667 seconds.
The 1-sigma cross-track error in the shadow position is
3840 km.
The sky-plane scale is
26764.7 km/arcsec.
The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 13.0 sec chord
Diameter=75.3 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is SCATEXTD
Star training set for 01KO77, (2019/04/28 09:31UT) Object RA Dec mag sep mel Antares 16:30:35.7 -26:28:24 0.9 22.71 74 35Eta Oph 17:11:29.3 -15:44:51 2.6 10.61 66 PPM 233766 17:57:25.8 -15:48:52 6.1 0.70 56 PPM 233767 17:57:25.8 -15:11:03 8.4 0.48 56 PPM 233733 17:55:55.3 -15:32:42 9.6 0.28 56 01KO77 17:55:28.9 -15:17:21 14.9 56 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
1.3 sigma about the mid-time.
The median site spacing is 12.2 km
RECON observability=1.0 and success probability=2.7%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 09:35:56 | -22.2 | Dark | Down | 20.3 | 151.2 | Low | 09:20:56 - 09:50:56 | 9020 |
| Summerland | 09:35:56 | -22.4 | Dark | Down | 20.3 | 150.8 | Low | 09:20:56 - 09:50:56 | 9006 |
| Penticton | 09:35:57 | -22.6 | Dark | Down | 20.6 | 151.0 | Low | 09:20:57 - 09:50:57 | 8993 |
| Okanagan Falls | 09:35:57 | -22.8 | Dark | Down | 20.8 | 150.9 | Low | 09:20:57 - 09:50:57 | 8981 |
| Oliver | 09:35:56 | -22.9 | Dark | Down | 20.9 | 150.9 | Low | 09:20:56 - 09:50:56 | 8971 |
| Anarchist Mountain Observatory | 09:35:55 | -23.0 | Dark | Down | 21.1 | 151.1 | Low | 09:20:55 - 09:50:55 | 8967 |
| Oroville | 09:35:56 | -23.1 | Dark | Down | 21.2 | 151.0 | Low | 09:20:56 - 09:50:56 | 8960 |
| Tonasket | 09:35:56 | -23.3 | Dark | Down | 21.4 | 150.9 | Low | 09:20:56 - 09:50:56 | 8945 |
| Okanogan | 09:35:57 | -23.7 | Dark | Down | 21.6 | 150.7 | Low | 09:20:57 - 09:50:57 | 8920 |
| Brewster | 09:36:00 | -24.0 | Dark | Down | 21.8 | 150.5 | Low | 09:21:00 - 09:51:00 | 8896 |
| Manson/Chelan | 09:36:00 | -24.3 | Dark | Down | 21.8 | 150.1 | Low | 09:21:00 - 09:51:00 | 8871 |
| Niwot | 09:34:53 | -24.7 | Dark | Up | 33.1 | 163.9 | Up | 09:19:53 - 09:49:53 | 8868 |
| SwRI | 09:34:55 | -24.8 | Dark | Up | 33.2 | 163.7 | Up | 09:19:55 - 09:49:55 | 8858 |
| Entiat | 09:36:01 | -24.5 | Dark | Down | 22.0 | 150.0 | Low | 09:21:01 - 09:51:01 | 8855 |
| Wenatchee | 09:36:02 | -24.7 | Dark | Down | 22.2 | 149.8 | Low | 09:21:02 - 09:51:02 | 8836 |
| Ellensburg | 09:36:03 | -25.2 | Dark | Down | 22.5 | 149.5 | Low | 09:21:03 - 09:51:03 | 8802 |
| Pasco | 09:35:58 | -25.4 | Dark | Down | 23.6 | 150.8 | Low | 09:20:58 - 09:50:58 | 8800 |
| PNWRO | 09:35:58 | -25.6 | Dark | Down | 23.9 | 150.9 | Low | 09:20:58 - 09:50:58 | 8791 |
| Yakima | 09:36:04 | -25.6 | Dark | Down | 22.8 | 149.4 | Low | 09:21:04 - 09:51:04 | 8775 |
| George/Umatilla | 09:35:58 | -25.8 | Dark | Down | 23.8 | 150.5 | Low | 09:20:58 - 09:50:58 | 8771 |
| Toppenish/White Swan | 09:36:03 | -25.7 | Dark | Down | 23.1 | 149.6 | Low | 09:21:03 - 09:51:03 | 8766 |
| Goldendale | 09:36:03 | -26.3 | Dark | Down | 23.4 | 149.0 | Low | 09:21:03 - 09:51:03 | 8715 |
| The Dalles | 09:36:07 | -26.6 | Dark | Down | 23.5 | 148.6 | Low | 09:21:07 - 09:51:07 | 8688 |
| Maupin | 09:36:05 | -27.0 | Dark | Down | 23.9 | 148.6 | Low | 09:21:05 - 09:51:05 | 8664 |
| Madras/Culver | 09:36:07 | -27.5 | Dark | Down | 24.3 | 148.5 | Low | 09:21:07 - 09:51:07 | 8625 |
| Redmond | 09:36:09 | -27.8 | Dark | Down | 24.6 | 148.3 | Low | 09:21:09 - 09:51:09 | 8599 |
| Sisters | 09:36:09 | -27.9 | Dark | Down | 24.4 | 148.0 | Low | 09:21:09 - 09:51:09 | 8587 |
| Bend | 09:36:09 | -28.1 | Dark | Down | 24.7 | 148.2 | Low | 09:21:09 - 09:51:09 | 8579 |
| Oregon Observatory | 09:36:09 | -28.3 | Dark | Down | 24.8 | 148.0 | Low | 09:21:09 - 09:51:09 | 8563 |
| La Pine/Gilchrist | 09:36:10 | -28.5 | Dark | Down | 25.0 | 147.9 | Low | 09:21:10 - 09:51:10 | 8546 |
| North Lake | 09:36:07 | -28.7 | Dark | Down | 25.6 | 148.3 | Low | 09:21:07 - 09:51:07 | 8537 |
| Paisley | 09:36:06 | -29.0 | Dark | Down | 26.2 | 148.6 | Low | 09:21:06 - 09:51:06 | 8511 |
| Lakeview | 09:36:04 | -29.4 | Dark | Down | 26.7 | 148.6 | Low | 09:21:04 - 09:51:04 | 8481 |
| Chiloquin | 09:36:12 | -29.6 | Dark | Down | 25.8 | 147.3 | Low | 09:21:12 - 09:51:12 | 8455 |
| Cedarville | 09:36:05 | -29.9 | Dark | Down | 27.3 | 148.6 | Low | 09:21:05 - 09:51:05 | 8441 |
| Klamath Falls | 09:36:14 | -29.8 | Dark | Down | 26.1 | 147.2 | Low | 09:21:14 - 09:51:14 | 8434 |
| Tulelake | 09:36:13 | -30.0 | Dark | Down | 26.4 | 147.5 | Low | 09:21:13 - 09:51:13 | 8425 |
| Fall River/Burney | 09:36:14 | -30.8 | Dark | Down | 27.2 | 147.3 | Low | 09:21:14 - 09:51:14 | 8362 |
| Susanville | 09:36:08 | -31.1 | Dark | Down | 28.1 | 147.8 | Low | 09:21:08 - 09:51:08 | 8343 |
| Gimple | 09:36:09 | -31.4 | Dark | Down | 28.2 | 147.6 | Low | 09:21:09 - 09:51:09 | 8315 |
| Greenville | 09:36:11 | -31.4 | Dark | Down | 28.2 | 147.5 | Low | 09:21:11 - 09:51:11 | 8312 |
| Reno | 09:36:05 | -31.6 | Dark | Down | 29.1 | 148.4 | Low | 09:21:05 - 09:51:05 | 8309 |
| Portola | 09:36:08 | -31.6 | Dark | Down | 28.7 | 147.9 | Low | 09:21:08 - 09:51:08 | 8305 |
| Quincy | 09:36:11 | -31.6 | Dark | Down | 28.4 | 147.4 | Low | 09:21:11 - 09:51:11 | 8297 |
| Tonopah | 09:35:53 | -31.9 | Dark | Down | 31.4 | 150.6 | Up | 09:20:53 - 09:50:53 | 8295 |
| Yerington | 09:36:03 | -31.8 | Dark | Down | 29.9 | 148.9 | Low | 09:21:03 - 09:51:03 | 8292 |
| Carson City | 09:36:05 | -31.9 | Dark | Down | 29.5 | 148.3 | Low | 09:21:05 - 09:51:05 | 8283 |
| Hawthorne | 09:36:00 | -32.0 | Dark | Down | 30.5 | 149.3 | Up | 09:21:00 - 09:51:00 | 8277 |
| Gardnerville | 09:36:07 | -32.1 | Dark | Down | 29.7 | 148.3 | Low | 09:21:07 - 09:51:07 | 8267 |
| Indian Springs | 09:35:46 | -32.5 | Dark | Down | 33.3 | 151.7 | Up | 09:20:46 - 09:50:46 | 8241 |
| Henderson | 09:35:43 | -32.6 | Dark | Down | 34.0 | 152.3 | Up | 09:20:43 - 09:50:43 | 8227 |
| DCO | 09:35:33 | -32.5 | Dark | Down | 35.5 | 153.9 | Up | 09:20:33 - 09:50:33 | 8226 |
| Beatty | 09:35:52 | -32.6 | Dark | Down | 32.6 | 150.7 | Up | 09:20:52 - 09:50:52 | 8225 |
| Patrick | 09:35:36 | -32.6 | Dark | Down | 35.0 | 153.2 | Up | 09:20:36 - 09:50:36 | 8222 |
| Lee Vining | 09:36:03 | -32.7 | Dark | Down | 30.8 | 148.6 | Up | 09:21:03 - 09:51:03 | 8217 |
| Bishop | 09:36:01 | -32.9 | Dark | Down | 31.6 | 149.2 | Up | 09:21:01 - 09:51:01 | 8199 |
| Kingman/Dolan Springs | 09:35:37 | -32.9 | Dark | Down | 35.1 | 153.0 | Up | 09:20:37 - 09:50:37 | 8198 |
| Searchlight/Boulder City | 09:35:42 | -33.0 | Dark | Down | 34.6 | 152.1 | Up | 09:20:42 - 09:50:42 | 8186 |
| Laughlin/Bullhead City | 09:35:40 | -33.1 | Dark | Down | 35.0 | 152.4 | Up | 09:20:40 - 09:50:40 | 8176 |
| Mohave Valley | 09:35:40 | -33.3 | Dark | Down | 35.2 | 152.3 | Up | 09:20:40 - 09:50:40 | 8156 |
| Lone Pine | 09:35:58 | -33.4 | Dark | Down | 32.4 | 149.3 | Up | 09:20:58 - 09:50:58 | 8153 |
| Lake Havasu City | 09:35:39 | -33.5 | Dark | Down | 35.7 | 152.5 | Up | 09:20:39 - 09:50:39 | 8134 |
| Parker | 09:35:39 | -33.8 | Dark | Down | 36.0 | 152.4 | Up | 09:20:39 - 09:50:39 | 8108 |
| Blythe | 09:35:40 | -34.4 | Dark | Down | 36.3 | 151.9 | Up | 09:20:40 - 09:50:40 | 8056 |
| Idyllwild | 09:35:51 | -35.3 | Dark | Down | 35.4 | 149.7 | Up | 09:20:51 - 09:50:51 | 7983 |
| Yuma | 09:35:40 | -35.2 | Dark | Down | 37.1 | 151.5 | Up | 09:20:40 - 09:50:40 | 7982 |
| Calipatria | 09:35:46 | -35.2 | Dark | Down | 36.4 | 150.7 | Up | 09:20:46 - 09:50:46 | 7981 |
| CPSLO | 09:36:10 | -35.6 | Dark | Down | 32.4 | 146.2 | Up | 09:21:10 - 09:51:10 | 7953 |
| Wildwood | 09:36:02 | -35.8 | Dark | Down | 34.3 | 147.9 | Up | 09:21:02 - 09:51:02 | 7937 |
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 01KO77, (2019/04/28 09:31UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 22.71 74 35Eta Oph 17:10:22.7 -15:43:29 2.6 10.61 66 PPM 233766 17:56:19.0 -15:48:46 6.1 0.70 56 PPM 233767 17:56:19.4 -15:10:58 8.4 0.48 56 PPM 233733 17:54:48.7 -15:32:34 9.6 0.28 56 01KO77 17:54:22.4 -15:17:13 14.9 56 Positions are for J2000
Event circumstances last updated at 2019/02/12 07:26:17 UT
Marc W. Buie, Southwest Research Institute