Event between 04HN79 and star UC4-339-071103 with event index number of 189836
Geocentric closest approach at 2019/05/23 07:38:38 UTC
J2000 position of star is 15:14:16.4 -22:13:24
Equinox of date position of star is 15:15:23.8 -22:17:39
Stellar brightness R=15.7,
use SENSEUP=128
Star is 63 degrees from the moon.
Moon is 80% illuminated.
TNO apparent brightness V=22.6
[RECON map]
TNO is 35.6 AU from the Sun
and 34.6 AU from the Earth.
The TNO is moving 23.6
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 255 seconds.
The 1-sigma cross-track error in the shadow position is
3895 km.
The sky-plane scale is
25104.1 km/arcsec.
The TNO has an absolute magnitude Hv=7.1
Diameter=228.0 km assuming a 5% albedo -- 9.6 sec chord
Diameter=93.1 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 04HN79, (2019/05/23 07:39UT) Object RA Dec mag sep mel Antares 16:30:36.0 -26:28:24 0.9 17.61 45 7Del Sco 16:01:29.0 -22:40:31 2.3 10.65 52 PPM 264038 15:17:30.7 -22:28:12 5.5 0.52 62 PPM 264013 15:16:16.3 -22:59:18 8.3 0.72 62 PPM 263996 15:15:39.6 -22:24:50 9.6 0.13 63 04HN79 15:15:24.0 -22:17:40 15.7 62 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
3.5 sigma about the mid-time.
The median site spacing is 9.1 km
RECON observability=0.8 and success probability=4.5%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 07:39:16 | -19.5 | Dark | Up | 17.6 | 187.3 | Really Low | 07:24:16 - 07:54:16 | 92 |
| Summerland | 07:39:16 | -19.8 | Dark | Up | 17.9 | 187.0 | Really Low | 07:24:16 - 07:54:16 | 79 |
| Penticton | 07:39:16 | -19.8 | Dark | Up | 17.9 | 187.1 | Really Low | 07:24:16 - 07:54:16 | 79 |
| Okanagan Falls | 07:39:16 | -20.0 | Dark | Up | 18.1 | 187.1 | Really Low | 07:24:16 - 07:54:16 | 72 |
| Oliver | 07:39:16 | -20.2 | Dark | Up | 18.3 | 187.1 | Really Low | 07:24:16 - 07:54:16 | 67 |
| Anarchist Mountain Observatory | 07:39:15 | -20.4 | Dark | Up | 18.5 | 187.3 | Really Low | 07:24:15 - 07:54:15 | 64 |
| Oroville | 07:39:15 | -20.4 | Dark | Up | 18.5 | 187.3 | Really Low | 07:24:15 - 07:54:15 | 61 |
| Tonasket | 07:39:15 | -20.7 | Dark | Up | 18.8 | 187.3 | Really Low | 07:24:15 - 07:54:15 | 53 |
| Okanogan | 07:39:15 | -21.0 | Dark | Up | 19.1 | 187.1 | Really Low | 07:24:15 - 07:54:15 | 40 |
| Brewster | 07:39:16 | -21.3 | Dark | Up | 19.4 | 187.0 | Really Low | 07:24:16 - 07:54:16 | 28 |
| Manson/Chelan | 07:39:17 | -21.5 | Dark | Up | 19.6 | 186.6 | Really Low | 07:24:17 - 07:54:17 | 16 |
| Entiat | 07:39:17 | -21.7 | Dark | Up | 19.9 | 186.6 | Really Low | 07:24:17 - 07:54:17 | 7 |
| Wenatchee | 07:39:17 | -21.9 | Dark | Up | 20.1 | 186.5 | Low | 07:24:17 - 07:54:17 | -3 |
| Ellensburg | 07:39:17 | -22.3 | Dark | Up | 20.5 | 186.3 | Low | 07:24:17 - 07:54:17 | -21 |
| Pasco | 07:39:12 | -23.1 | Dark | Up | 21.2 | 187.7 | Low | 07:24:12 - 07:54:12 | -29 |
| PNWRO | 07:39:11 | -23.4 | Dark | Up | 21.4 | 187.9 | Low | 07:24:11 - 07:54:11 | -35 |
| Yakima | 07:39:17 | -22.7 | Dark | Up | 20.9 | 186.3 | Low | 07:24:17 - 07:54:17 | -37 |
| Toppenish/White Swan | 07:39:16 | -22.9 | Dark | Up | 21.2 | 186.4 | Low | 07:24:16 - 07:54:16 | -42 |
| George/Umatilla | 07:39:13 | -23.5 | Dark | Up | 21.5 | 187.5 | Low | 07:24:13 - 07:54:13 | -44 |
| Goldendale | 07:39:17 | -23.5 | Dark | Up | 21.7 | 186.0 | Low | 07:24:17 - 07:54:17 | -70 |
| The Dalles | 07:39:18 | -23.7 | Dark | Up | 22.0 | 185.7 | Low | 07:24:18 - 07:54:18 | -84 |
| Maupin | 07:39:18 | -24.1 | Dark | Up | 22.4 | 185.8 | Low | 07:24:18 - 07:54:18 | -99 |
| Madras/Culver | 07:39:17 | -24.6 | Dark | Up | 22.9 | 185.8 | Low | 07:24:17 - 07:54:17 | -121 |
| Niwot | 07:38:19 | -28.6 | Dark | Up | 24.5 | 201.9 | Low | 07:23:19 - 07:53:19 | -135 |
| Redmond | 07:39:17 | -25.0 | Dark | Up | 23.3 | 185.8 | Low | 07:24:17 - 07:54:17 | -137 |
| SwRI | 07:38:19 | -28.7 | Dark | Up | 24.7 | 201.8 | Low | 07:23:19 - 07:53:19 | -141 |
| Sisters | 07:39:19 | -24.9 | Dark | Up | 23.3 | 185.4 | Low | 07:24:19 - 07:54:19 | -142 |
| Bend | 07:39:17 | -25.2 | Dark | Up | 23.5 | 185.6 | Low | 07:24:17 - 07:54:17 | -148 |
| Oregon Observatory | 07:39:18 | -25.4 | Dark | Up | 23.7 | 185.5 | Low | 07:24:18 - 07:54:18 | -157 |
| La Pine/Gilchrist | 07:39:18 | -25.6 | Dark | Up | 23.9 | 185.5 | Low | 07:24:18 - 07:54:18 | -167 |
| North Lake | 07:39:16 | -26.0 | Dark | Up | 24.3 | 186.1 | Low | 07:24:16 - 07:54:16 | -176 |
| Paisley | 07:39:14 | -26.6 | Dark | Up | 24.8 | 186.5 | Low | 07:24:14 - 07:54:14 | -195 |
| Lakeview | 07:39:13 | -27.1 | Dark | Up | 25.3 | 186.7 | Low | 07:24:13 - 07:54:13 | -214 |
| Chiloquin | 07:39:18 | -26.6 | Dark | Up | 25.0 | 185.1 | Low | 07:24:18 - 07:54:18 | -221 |
| Klamath Falls | 07:39:18 | -27.0 | Dark | Up | 25.4 | 185.2 | Low | 07:24:18 - 07:54:18 | -235 |
| Cedarville | 07:39:12 | -27.8 | Dark | Up | 25.9 | 186.9 | Low | 07:24:12 - 07:54:12 | -241 |
| Tulelake | 07:39:17 | -27.3 | Dark | Up | 25.6 | 185.6 | Low | 07:24:17 - 07:54:17 | -243 |
| Fall River/Burney | 07:39:16 | -28.2 | Dark | Up | 26.5 | 185.7 | Low | 07:24:16 - 07:54:16 | -283 |
| Susanville | 07:39:12 | -28.9 | Dark | Up | 27.1 | 186.5 | Low | 07:24:12 - 07:54:12 | -301 |
| Gimple | 07:39:13 | -29.1 | Dark | Up | 27.4 | 186.3 | Low | 07:24:13 - 07:54:13 | -318 |
| Greenville | 07:39:14 | -29.1 | Dark | Up | 27.4 | 186.2 | Low | 07:24:14 - 07:54:14 | -319 |
| Portola | 07:39:11 | -29.5 | Dark | Up | 27.7 | 186.7 | Low | 07:24:11 - 07:54:11 | -328 |
| Quincy | 07:39:13 | -29.3 | Dark | Up | 27.6 | 186.2 | Low | 07:24:13 - 07:54:13 | -329 |
| Reno | 07:39:09 | -29.8 | Dark | Up | 27.9 | 187.4 | Low | 07:24:09 - 07:54:09 | -330 |
| Yerington | 07:39:06 | -30.4 | Dark | Up | 28.4 | 188.1 | Low | 07:24:06 - 07:54:06 | -347 |
| Carson City | 07:39:09 | -30.1 | Dark | Up | 28.2 | 187.4 | Low | 07:24:09 - 07:54:09 | -348 |
| Gardnerville | 07:39:08 | -30.4 | Dark | Up | 28.5 | 187.5 | Low | 07:24:08 - 07:54:08 | -359 |
| Hawthorne | 07:39:04 | -30.9 | Dark | Up | 28.8 | 188.7 | Low | 07:24:04 - 07:54:04 | -363 |
| Tonopah | 07:38:58 | -31.4 | Dark | Up | 29.0 | 190.2 | Low | 07:23:58 - 07:53:58 | -365 |
| Lee Vining | 07:39:05 | -31.4 | Dark | Up | 29.4 | 188.2 | Low | 07:24:05 - 07:54:05 | -399 |
| Beatty | 07:38:56 | -32.5 | Dark | Up | 30.1 | 190.8 | Up | 07:23:56 - 07:53:56 | -419 |
| Bishop | 07:39:02 | -32.0 | Dark | Up | 29.9 | 189.0 | Low | 07:24:02 - 07:54:02 | -419 |
| Indian Springs | 07:38:51 | -32.9 | Dark | Up | 30.3 | 191.9 | Up | 07:23:51 - 07:53:51 | -421 |
| Henderson | 07:38:48 | -33.4 | Dark | Up | 30.7 | 192.7 | Up | 07:23:48 - 07:53:48 | -440 |
| Lone Pine | 07:39:00 | -32.8 | Dark | Up | 30.6 | 189.4 | Up | 07:24:00 - 07:54:00 | -454 |
| Patrick | 07:38:43 | -34.0 | Dark | Up | 31.1 | 193.9 | Up | 07:23:43 - 07:53:43 | -459 |
| DCO | 07:38:41 | -34.3 | Dark | Up | 31.2 | 194.7 | Up | 07:23:41 - 07:53:41 | -467 |
| Searchlight/Boulder City | 07:38:48 | -34.0 | Dark | Up | 31.2 | 192.8 | Up | 07:23:48 - 07:53:48 | -470 |
| Kingman/Dolan Springs | 07:38:44 | -34.3 | Dark | Up | 31.3 | 193.8 | Up | 07:23:44 - 07:53:44 | -474 |
| Laughlin/Bullhead City | 07:38:46 | -34.3 | Dark | Up | 31.5 | 193.2 | Up | 07:23:46 - 07:53:46 | -482 |
| Mohave Valley | 07:38:45 | -34.6 | Dark | Up | 31.7 | 193.3 | Up | 07:23:45 - 07:53:45 | -497 |
| Lake Havasu City | 07:38:44 | -35.0 | Dark | Up | 32.1 | 193.6 | Up | 07:23:44 - 07:53:44 | -516 |
| Parker | 07:38:44 | -35.3 | Dark | Up | 32.4 | 193.7 | Up | 07:23:44 - 07:53:44 | -536 |
| CPSLO | 07:39:08 | -33.9 | Dark | Up | 32.2 | 186.8 | Up | 07:24:08 - 07:54:08 | -568 |
| Blythe | 07:38:44 | -35.8 | Dark | Up | 33.0 | 193.4 | Up | 07:23:44 - 07:53:44 | -570 |
| Idyllwild | 07:38:52 | -35.7 | Dark | Up | 33.2 | 191.2 | Up | 07:23:52 - 07:53:52 | -594 |
| Wildwood | 07:39:00 | -35.3 | Dark | Up | 33.1 | 189.1 | Up | 07:24:00 - 07:54:00 | -603 |
| Calipatria | 07:38:47 | -36.3 | Dark | Up | 33.6 | 192.5 | Up | 07:23:47 - 07:53:47 | -612 |
| Yuma | 07:38:43 | -36.8 | Dark | Up | 33.9 | 193.5 | Up | 07:23:43 - 07:53:43 | -625 |
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 04HN79, (2019/05/23 07:39UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.61 45 7Del Sco 16:00:20.0 -22:37:18 2.3 10.65 52 PPM 264038 15:16:23.0 -22:23:58 5.5 0.52 62 PPM 264013 15:15:08.4 -22:55:02 8.3 0.72 62 PPM 263996 15:14:32.0 -22:20:34 9.6 0.13 63 04HN79 15:14:16.4 -22:13:24 15.7 63 Positions are for J2000
Event circumstances last updated at 2019/04/25 23:13:08 UT
Marc W. Buie, Southwest Research Institute