Event between 04HE79 and star UC4-344-079116 with event index number of 55330
Geocentric closest approach at 2017/05/23 08:26:07 UTC
J2000 position of star is 16:13:57.1 -21:20:47
Equinox of date position of star is 16:14:58.5 -21:23:21
Stellar brightness R=11.9,
use SENSEUP=8
Star is 142 degrees from the moon.
Moon is 9% illuminated.
TNO apparent brightness V=23.5
[RECON map]
TNO is 40.2 AU from the Sun
and 39.2 AU from the Earth.
The TNO is moving 24.4
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 415 seconds.
The 1-sigma cross-track error in the shadow position is
5725 km.
The sky-plane scale is
28414.2 km/arcsec.
The TNO has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 7.7 sec chord
Diameter=76.7 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 04HE79, (2017/05/23 08:26UT) Object RA Dec mag sep mel Antares 16:30:28.6 -26:28:09 0.9 6.19 137 8Bet1Sco 16:06:27.1 -19:51:06 2.6 2.52 144 PPM 265352 16:18:00.3 -20:08:46 6.5 1.43 141 PPM 265275 16:14:41.8 -21:26:35 7.0 0.08 142 04HE79 16:14:58.8 -21:23:22 11.9 142 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
2.2 sigma about the mid-time.
The median site spacing is 10.5 km
RECON observability=1.0 and success probability=3.3%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Oroville | 08:26:33 | -20.1 | Dark | Down | 19.6 | 184.8 | Really Low | 08:11:33 - 08:41:33 | 4163 |
| Tonasket | 08:26:32 | -20.3 | Dark | Down | 19.8 | 184.8 | Really Low | 08:11:32 - 08:41:32 | 4155 |
| Okanogan | 08:26:33 | -20.6 | Dark | Down | 20.2 | 184.7 | Low | 08:11:33 - 08:41:33 | 4141 |
| Brewster | 08:26:34 | -20.9 | Dark | Down | 20.4 | 184.5 | Low | 08:11:34 - 08:41:34 | 4129 |
| Manson/Chelan | 08:26:35 | -21.2 | Dark | Down | 20.7 | 184.1 | Low | 08:11:35 - 08:41:35 | 4117 |
| Entiat | 08:26:34 | -21.4 | Dark | Down | 20.9 | 184.1 | Low | 08:11:34 - 08:41:34 | 4108 |
| Wenatchee | 08:26:34 | -21.6 | Dark | Down | 21.2 | 184.0 | Low | 08:11:34 - 08:41:34 | 4097 |
| Ellensburg | 08:26:35 | -22.1 | Dark | Down | 21.6 | 183.8 | Low | 08:11:35 - 08:41:35 | 4079 |
| Pasco | 08:26:30 | -22.7 | Dark | Down | 22.2 | 185.2 | Low | 08:11:30 - 08:41:30 | 4063 |
| Yakima | 08:26:35 | -22.5 | Dark | Down | 22.0 | 183.8 | Low | 08:11:35 - 08:41:35 | 4062 |
| PNWRO | 08:26:29 | -22.9 | Dark | Down | 22.5 | 185.4 | Low | 08:11:29 - 08:41:29 | 4056 |
| Toppenish/White Swan | 08:26:34 | -22.7 | Dark | Down | 22.2 | 183.9 | Low | 08:11:34 - 08:41:34 | 4055 |
| George/Umatilla | 08:26:30 | -23.0 | Dark | Down | 22.6 | 185.0 | Low | 08:11:30 - 08:41:30 | 4047 |
| Goldendale | 08:26:35 | -23.3 | Dark | Down | 22.8 | 183.5 | Low | 08:11:35 - 08:41:35 | 4028 |
| The Dalles | 08:26:36 | -23.5 | Dark | Down | 23.0 | 183.2 | Low | 08:11:36 - 08:41:36 | 4014 |
| Maupin | 08:26:36 | -23.9 | Dark | Down | 23.4 | 183.3 | Low | 08:11:36 - 08:41:36 | 3998 |
| Madras/Culver | 08:26:35 | -24.5 | Dark | Down | 24.0 | 183.2 | Low | 08:11:35 - 08:41:35 | 3974 |
| Redmond | 08:26:36 | -24.8 | Dark | Down | 24.3 | 183.2 | Low | 08:11:36 - 08:41:36 | 3958 |
| Sisters | 08:26:37 | -24.8 | Dark | Down | 24.3 | 182.8 | Low | 08:11:37 - 08:41:37 | 3954 |
| Bend | 08:26:36 | -25.1 | Dark | Down | 24.5 | 183.1 | Low | 08:11:36 - 08:41:36 | 3947 |
| Oregon Observatory | 08:26:36 | -25.2 | Dark | Down | 24.7 | 182.9 | Low | 08:11:36 - 08:41:36 | 3938 |
| La Pine/Gilchrist | 08:26:36 | -25.5 | Dark | Down | 24.9 | 182.9 | Low | 08:11:36 - 08:41:36 | 3928 |
| North Lake | 08:26:34 | -25.8 | Dark | Down | 25.3 | 183.5 | Low | 08:11:34 - 08:41:34 | 3915 |
| Paisley | 08:26:32 | -26.3 | Dark | Down | 25.9 | 183.9 | Low | 08:11:32 - 08:41:32 | 3893 |
| Niwot | 08:25:40 | -25.9 | Dark | Down | 26.1 | 199.6 | Low | 08:10:40 - 08:40:40 | 3884 |
| Chiloquin | 08:26:37 | -26.6 | Dark | Down | 26.0 | 182.5 | Low | 08:11:37 - 08:41:37 | 3871 |
| Lakeview | 08:26:32 | -26.8 | Dark | Down | 26.4 | 184.1 | Low | 08:11:32 - 08:41:32 | 3871 |
| Klamath Falls | 08:26:37 | -26.9 | Dark | Down | 26.4 | 182.6 | Low | 08:11:37 - 08:41:37 | 3856 |
| Tulelake | 08:26:35 | -27.2 | Dark | Down | 26.6 | 182.9 | Low | 08:11:35 - 08:41:35 | 3847 |
| Cedarville | 08:26:31 | -27.5 | Dark | Down | 27.0 | 184.3 | Low | 08:11:31 - 08:41:31 | 3841 |
| Fall River/Burney | 08:26:35 | -28.1 | Dark | Down | 27.5 | 183.1 | Low | 08:11:35 - 08:41:35 | 3802 |
| Susanville | 08:26:32 | -28.6 | Dark | Down | 28.1 | 183.8 | Low | 08:11:32 - 08:41:32 | 3780 |
| Gimple | 08:26:32 | -28.9 | Dark | Down | 28.4 | 183.6 | Low | 08:11:32 - 08:41:32 | 3763 |
| Greenville | 08:26:33 | -28.9 | Dark | Down | 28.4 | 183.5 | Low | 08:11:33 - 08:41:33 | 3762 |
| Quincy | 08:26:32 | -29.1 | Dark | Down | 28.6 | 183.6 | Low | 08:11:32 - 08:41:32 | 3751 |
| Portola | 08:26:31 | -29.2 | Dark | Down | 28.7 | 184.1 | Low | 08:11:31 - 08:41:31 | 3751 |
| Reno | 08:26:29 | -29.4 | Dark | Down | 29.0 | 184.7 | Low | 08:11:29 - 08:41:29 | 3745 |
| Carson City | 08:26:28 | -29.8 | Dark | Down | 29.3 | 184.8 | Low | 08:11:28 - 08:41:28 | 3726 |
| Yerington | 08:26:26 | -29.9 | Dark | Down | 29.5 | 185.5 | Low | 08:11:26 - 08:41:26 | 3723 |
| Gardnerville | 08:26:28 | -30.0 | Dark | Down | 29.6 | 184.8 | Low | 08:11:28 - 08:41:28 | 3714 |
| Hawthorne | 08:26:24 | -30.3 | Dark | Down | 29.9 | 186.0 | Low | 08:11:24 - 08:41:24 | 3704 |
| Tonopah | 08:26:18 | -30.5 | Dark | Down | 30.2 | 187.6 | Up | 08:11:18 - 08:41:18 | 3694 |
| Lee Vining | 08:26:25 | -30.9 | Dark | Down | 30.5 | 185.6 | Up | 08:11:25 - 08:41:25 | 3668 |
| Bishop | 08:26:22 | -31.4 | Dark | Down | 31.0 | 186.4 | Up | 08:11:22 - 08:41:22 | 3643 |
| Beatty | 08:26:16 | -31.6 | Dark | Down | 31.3 | 188.1 | Up | 08:11:16 - 08:41:16 | 3634 |
| Indian Springs | 08:26:12 | -31.7 | Dark | Down | 31.5 | 189.3 | Up | 08:11:12 - 08:41:12 | 3626 |
| Lone Pine | 08:26:20 | -32.1 | Dark | Down | 31.8 | 186.8 | Up | 08:11:20 - 08:41:20 | 3603 |
| Henderson | 08:26:09 | -32.1 | Dark | Down | 32.0 | 190.1 | Up | 08:11:09 - 08:41:09 | 3602 |
| Patrick | 08:26:04 | -32.5 | Dark | Down | 32.4 | 191.4 | Up | 08:11:04 - 08:41:04 | 3576 |
| Searchlight/Boulder City | 08:26:08 | -32.7 | Dark | Down | 32.5 | 190.2 | Up | 08:11:08 - 08:41:08 | 3570 |
| DCO | 08:26:02 | -32.7 | Dark | Down | 32.6 | 192.2 | Up | 08:11:02 - 08:41:02 | 3564 |
| Kingman/Dolan Springs | 08:26:06 | -32.8 | Dark | Down | 32.7 | 191.2 | Up | 08:11:06 - 08:41:06 | 3561 |
| Laughlin/Bullhead City | 08:26:07 | -32.9 | Dark | Down | 32.8 | 190.7 | Up | 08:11:07 - 08:41:07 | 3555 |
| Mohave Valley | 08:26:06 | -33.2 | Dark | Down | 33.0 | 190.7 | Up | 08:11:06 - 08:41:06 | 3538 |
| Lake Havasu City | 08:26:06 | -33.5 | Dark | Down | 33.4 | 191.0 | Up | 08:11:06 - 08:41:06 | 3517 |
| Parker | 08:26:05 | -33.8 | Dark | Down | 33.7 | 191.1 | Up | 08:11:05 - 08:41:05 | 3496 |
| CPSLO | 08:26:29 | -33.7 | Dark | Down | 33.2 | 184.0 | Up | 08:11:29 - 08:41:29 | 3496 |
| Blythe | 08:26:05 | -34.4 | Dark | Down | 34.3 | 190.8 | Up | 08:11:05 - 08:41:05 | 3461 |
| Wildwood | 08:26:21 | -34.6 | Dark | Down | 34.3 | 186.4 | Up | 08:11:21 - 08:41:21 | 3448 |
| Idyllwild | 08:26:14 | -34.7 | Dark | Down | 34.5 | 188.5 | Up | 08:11:14 - 08:41:14 | 3448 |
| Calipatria | 08:26:09 | -35.1 | Dark | Down | 34.9 | 189.9 | Up | 08:11:09 - 08:41:09 | 3421 |
| Yuma | 08:26:05 | -35.3 | Dark | Down | 35.2 | 190.9 | Up | 08:11:05 - 08:41:05 | 3403 |
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 04HE79, (2017/05/23 08:26UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:55 0.9 6.19 137 8Bet1Sco 16:05:26.2 -19:48:20 2.6 2.52 144 PPM 265352 16:16:59.2 -20:06:15 6.5 1.43 141 PPM 265275 16:13:40.2 -21:24:00 7.0 0.08 142 04HE79 16:13:57.1 -21:20:47 11.9 142 Positions are for J2000
Event circumstances last updated at 2017/04/24 16:07:06 UT
Marc W. Buie, Southwest Research Institute