Event between 04HQ79 and star GA0680:06376253 with event index number of 189841
Geocentric closest approach at 2019/05/27 06:37:50 UTC
J2000 position of star is 15:38:47.2 -21:53:14
Equinox of date position of star is 15:39:54.4 -21:56:54
Stellar brightness G=13.3,
use SENSEUP=32
Star is 104 degrees from the moon.
Moon is 45% illuminated.
TNO apparent brightness V=23.8
[RECON map]
TNO is 37.8 AU from the Sun
and 36.8 AU from the Earth.
The TNO is moving 23.5
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 378 seconds.
The 1-sigma cross-track error in the shadow position is
4501 km.
The sky-plane scale is
26677.0 km/arcsec.
The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 6.2 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is SCATNEAR
Star training set for 04HQ79, (2019/05/27 06:38UT) Object RA Dec mag sep mel Antares 16:30:36.0 -26:28:24 0.9 12.40 92 7Del Sco 16:01:29.0 -22:40:32 2.3 5.04 99 PPM 264480 15:39:24.2 -21:04:44 5.9 0.88 105 PPM 264486 15:39:42.4 -21:39:39 8.4 0.29 104 PPM 264475 15:39:13.7 -22:08:15 9.7 0.25 104 04HQ79 15:39:55.4 -21:56:57 13.3 104 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
2.4 sigma about the mid-time.
The median site spacing is 9.0 km
RECON observability=0.8 and success probability=4.0%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Kelowna | 06:39:13 | -16.9 | AT | Down | 17.7 | 170.5 | Really Low | 06:24:13 - 06:54:13 | 1054 |
| Summerland | 06:39:14 | -16.9 | AT | Down | 17.7 | 170.2 | Really Low | 06:24:14 - 06:54:14 | 1045 |
| Penticton | 06:39:14 | -17.2 | AT | Down | 18.0 | 170.3 | Really Low | 06:24:14 - 06:54:14 | 1037 |
| Okanagan Falls | 06:39:14 | -17.4 | AT | Down | 18.2 | 170.3 | Really Low | 06:24:14 - 06:54:14 | 1029 |
| Oliver | 06:39:13 | -17.6 | AT | Down | 18.4 | 170.3 | Really Low | 06:24:13 - 06:54:13 | 1023 |
| Anarchist Mountain Observatory | 06:39:13 | -17.8 | AT | Down | 18.6 | 170.5 | Really Low | 06:24:13 - 06:54:13 | 1020 |
| Oroville | 06:39:14 | -17.8 | AT | Down | 18.6 | 170.4 | Really Low | 06:24:14 - 06:54:14 | 1016 |
| Tonasket | 06:39:13 | -18.0 | Dark | Down | 18.9 | 170.4 | Really Low | 06:24:13 - 06:54:13 | 1007 |
| Okanogan | 06:39:14 | -18.3 | Dark | Down | 19.2 | 170.2 | Really Low | 06:24:14 - 06:54:14 | 990 |
| Brewster | 06:39:15 | -18.5 | Dark | Down | 19.4 | 170.0 | Really Low | 06:24:15 - 06:54:15 | 975 |
| Manson/Chelan | 06:39:16 | -18.7 | Dark | Down | 19.6 | 169.7 | Really Low | 06:24:16 - 06:54:16 | 959 |
| Entiat | 06:39:16 | -18.8 | Dark | Down | 19.8 | 169.6 | Really Low | 06:24:16 - 06:54:16 | 949 |
| Wenatchee | 06:39:17 | -19.1 | Dark | Down | 20.0 | 169.5 | Low | 06:24:17 - 06:54:17 | 936 |
| Ellensburg | 06:39:17 | -19.4 | Dark | Down | 20.4 | 169.2 | Low | 06:24:17 - 06:54:17 | 914 |
| Pasco | 06:39:13 | -20.4 | Dark | Down | 21.3 | 170.6 | Low | 06:24:13 - 06:54:13 | 911 |
| PNWRO | 06:39:13 | -20.7 | Dark | Down | 21.6 | 170.8 | Low | 06:24:13 - 06:54:13 | 905 |
| Yakima | 06:39:17 | -19.8 | Dark | Down | 20.8 | 169.2 | Low | 06:24:17 - 06:54:17 | 896 |
| George/Umatilla | 06:39:14 | -20.7 | Dark | Down | 21.6 | 170.3 | Low | 06:24:14 - 06:54:14 | 892 |
| Toppenish/White Swan | 06:39:17 | -20.0 | Dark | Down | 21.1 | 169.3 | Low | 06:24:17 - 06:54:17 | 890 |
| Niwot | 06:38:25 | -28.5 | Dark | Down | 27.9 | 184.5 | Low | 06:23:25 - 06:53:25 | 878 |
| SwRI | 06:38:26 | -28.6 | Dark | Down | 28.0 | 184.4 | Low | 06:23:26 - 06:53:26 | 871 |
| Goldendale | 06:39:19 | -20.4 | Dark | Down | 21.5 | 168.9 | Low | 06:24:19 - 06:54:19 | 857 |
| The Dalles | 06:39:20 | -20.6 | Dark | Down | 21.7 | 168.5 | Low | 06:24:20 - 06:54:20 | 838 |
| Maupin | 06:39:20 | -21.0 | Dark | Down | 22.1 | 168.6 | Low | 06:24:20 - 06:54:20 | 822 |
| Madras/Culver | 06:39:20 | -21.5 | Dark | Down | 22.7 | 168.5 | Low | 06:24:20 - 06:54:20 | 795 |
| Redmond | 06:39:20 | -21.8 | Dark | Down | 23.0 | 168.4 | Low | 06:24:20 - 06:54:20 | 777 |
| Sisters | 06:39:21 | -21.7 | Dark | Down | 22.9 | 168.0 | Low | 06:24:21 - 06:54:21 | 769 |
| Bend | 06:39:21 | -22.0 | Dark | Down | 23.2 | 168.2 | Low | 06:24:21 - 06:54:21 | 764 |
| Oregon Observatory | 06:39:21 | -22.1 | Dark | Down | 23.3 | 168.1 | Low | 06:24:21 - 06:54:21 | 752 |
| La Pine/Gilchrist | 06:39:21 | -22.3 | Dark | Down | 23.5 | 168.0 | Low | 06:24:21 - 06:54:21 | 741 |
| North Lake | 06:39:20 | -22.8 | Dark | Down | 24.1 | 168.6 | Low | 06:24:20 - 06:54:20 | 733 |
| Paisley | 06:39:18 | -23.4 | Dark | Down | 24.6 | 168.9 | Low | 06:24:18 - 06:54:18 | 714 |
| Lakeview | 06:39:18 | -24.0 | Dark | Down | 25.2 | 169.0 | Low | 06:24:18 - 06:54:18 | 693 |
| Chiloquin | 06:39:23 | -23.2 | Dark | Down | 24.6 | 167.6 | Low | 06:24:23 - 06:54:23 | 678 |
| Cedarville | 06:39:17 | -24.6 | Dark | Down | 25.8 | 169.2 | Low | 06:24:17 - 06:54:17 | 663 |
| Klamath Falls | 06:39:22 | -23.6 | Dark | Down | 24.9 | 167.6 | Low | 06:24:22 - 06:54:22 | 662 |
| Tulelake | 06:39:22 | -23.9 | Dark | Down | 25.2 | 167.9 | Low | 06:24:22 - 06:54:22 | 655 |
| Fall River/Burney | 06:39:21 | -24.8 | Dark | Down | 26.1 | 167.9 | Low | 06:24:21 - 06:54:21 | 609 |
| Susanville | 06:39:19 | -25.6 | Dark | Down | 26.9 | 168.6 | Low | 06:24:19 - 06:54:19 | 593 |
| Gimple | 06:39:20 | -25.8 | Dark | Down | 27.1 | 168.3 | Low | 06:24:20 - 06:54:20 | 573 |
| Greenville | 06:39:20 | -25.7 | Dark | Down | 27.1 | 168.2 | Low | 06:24:20 - 06:54:20 | 571 |
| Reno | 06:39:16 | -26.6 | Dark | Down | 27.8 | 169.3 | Low | 06:24:16 - 06:54:16 | 565 |
| Portola | 06:39:18 | -26.2 | Dark | Down | 27.5 | 168.7 | Low | 06:24:18 - 06:54:18 | 565 |
| Quincy | 06:39:20 | -25.9 | Dark | Down | 27.3 | 168.2 | Low | 06:24:20 - 06:54:20 | 560 |
| Yerington | 06:39:14 | -27.3 | Dark | Down | 28.5 | 170.0 | Low | 06:24:14 - 06:54:14 | 550 |
| Carson City | 06:39:16 | -26.9 | Dark | Down | 28.2 | 169.3 | Low | 06:24:16 - 06:54:16 | 546 |
| Tonopah | 06:39:07 | -28.6 | Dark | Down | 29.6 | 171.9 | Low | 06:24:07 - 06:54:07 | 541 |
| Hawthorne | 06:39:12 | -27.9 | Dark | Down | 29.0 | 170.5 | Low | 06:24:12 - 06:54:12 | 536 |
| Gardnerville | 06:39:16 | -27.2 | Dark | Down | 28.4 | 169.3 | Low | 06:24:16 - 06:54:16 | 533 |
| Lee Vining | 06:39:14 | -28.3 | Dark | Down | 29.5 | 169.9 | Low | 06:24:14 - 06:54:14 | 492 |
| Indian Springs | 06:39:02 | -30.4 | Dark | Down | 31.3 | 173.4 | Up | 06:24:02 - 06:54:02 | 490 |
| Beatty | 06:39:05 | -29.9 | Dark | Down | 30.8 | 172.3 | Up | 06:24:05 - 06:54:05 | 485 |
| Bishop | 06:39:11 | -29.0 | Dark | Down | 30.2 | 170.6 | Up | 06:24:11 - 06:54:11 | 475 |
| Henderson | 06:38:59 | -31.1 | Dark | Down | 31.8 | 174.1 | Up | 06:23:59 - 06:53:59 | 474 |
| Patrick | 06:38:55 | -31.9 | Dark | Down | 32.6 | 175.3 | Up | 06:23:55 - 06:53:55 | 461 |
| DCO | 06:38:52 | -32.4 | Dark | Down | 32.9 | 176.0 | Up | 06:23:52 - 06:53:52 | 458 |
| Kingman/Dolan Springs | 06:38:55 | -32.1 | Dark | Down | 32.8 | 175.1 | Up | 06:23:55 - 06:53:55 | 444 |
| Searchlight/Boulder City | 06:38:58 | -31.6 | Dark | Down | 32.4 | 174.1 | Up | 06:23:58 - 06:53:58 | 441 |
| Lone Pine | 06:39:10 | -29.8 | Dark | Down | 31.0 | 170.9 | Up | 06:24:10 - 06:54:10 | 438 |
| Laughlin/Bullhead City | 06:38:57 | -32.0 | Dark | Down | 32.7 | 174.5 | Up | 06:23:57 - 06:53:57 | 431 |
| Mohave Valley | 06:38:57 | -32.3 | Dark | Down | 33.0 | 174.5 | Up | 06:23:57 - 06:53:57 | 415 |
| Lake Havasu City | 06:38:56 | -32.7 | Dark | Down | 33.4 | 174.7 | Up | 06:23:56 - 06:53:56 | 396 |
| Parker | 06:38:56 | -33.1 | Dark | Down | 33.8 | 174.7 | Up | 06:23:56 - 06:53:56 | 375 |
| Blythe | 06:38:57 | -33.5 | Dark | Down | 34.3 | 174.4 | Up | 06:23:57 - 06:53:57 | 335 |
| CPSLO | 06:39:19 | -30.3 | Dark | Down | 31.9 | 168.0 | Up | 06:24:19 - 06:54:19 | 297 |
| Idyllwild | 06:39:05 | -32.9 | Dark | Down | 34.0 | 172.1 | Up | 06:24:05 - 06:54:05 | 294 |
| Calipatria | 06:39:00 | -33.8 | Dark | Down | 34.7 | 173.3 | Up | 06:24:00 - 06:54:00 | 283 |
| Yuma | 06:38:57 | -34.4 | Dark | Down | 35.2 | 174.3 | Up | 06:23:57 - 06:53:57 | 276 |
| Wildwood | 06:39:12 | -32.0 | Dark | Down | 33.4 | 170.0 | Up | 06:24:12 - 06:54:12 | 272 |
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 04HQ79, (2019/05/27 06:38UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.40 92 7Del Sco 16:00:20.0 -22:37:18 2.3 5.04 99 PPM 264480 15:38:16.4 -21:01:00 5.9 0.88 105 PPM 264486 15:38:34.3 -21:35:55 8.4 0.29 104 PPM 264475 15:38:05.4 -22:04:30 9.7 0.25 104 04HQ79 15:38:47.2 -21:53:14 13.3 104 Positions are for J2000
Event circumstances last updated at 2019/02/12 08:11:40 UT
Marc W. Buie, Southwest Research Institute