Event between (516977) 12HZ84 and star GA0700:32447311 with event index number of 267072
Geocentric closest approach at 2019/10/16 04:05:36 UTC
J2000 position of star is 19:12:34.9 -19:31:50
Equinox of date position of star is 19:13:43.4 -19:29:48
Stellar brightness G=15.2,
use SENSEUP=128
Star is 121 degrees from the moon.
Moon is 95% illuminated.
TNO apparent brightness V=25.1
[RECON map]
TNO is 40.0 AU from the Sun
and 40.0 AU from the Earth.
The TNO is moving 8.2
km/sec on the sky relative to the star, or,
1.0 arcsec/hr.
The 1-sigma error in the time of the event is 1061 seconds.
The 1-sigma cross-track error in the shadow position is
2629 km.
The sky-plane scale is
29044.6 km/arcsec.
The TNO has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 12.2 sec chord
Diameter=40.8 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 516977, (2019/10/16 04:06UT) Object RA Dec mag sep mel Antares 16:30:37.4 -26:28:27 0.9 38.03 157 Nunki 18:56:29.5 -26:16:14 2.0 7.85 125 PPM 235581 19:10:58.1 -19:46:15 6.4 0.71 122 PPM 235649 19:13:53.6 -19:12:06 8.5 0.30 121 PPM 235661 19:14:14.3 -19:27:09 9.1 0.12 121 516977 19:13:44.6 -19:29:46 15.2 121 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
0.8 sigma about the mid-time.
The median site spacing is 22.5 km
RECON observability=0.4 and success probability=5.9%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Kelowna | 04:10:56 | -29.9 | Dark | Up | 12.2 | 217.9 | Really Low | 03:55:56 - 04:25:56 | 3301 |
Summerland | 04:10:56 | -29.9 | Dark | Up | 12.6 | 217.7 | Really Low | 03:55:56 - 04:25:56 | 3292 |
Penticton | 04:10:57 | -30.0 | Dark | Up | 12.6 | 217.8 | Really Low | 03:55:57 - 04:25:57 | 3287 |
Okanagan Falls | 04:10:58 | -30.0 | Dark | Up | 12.8 | 217.8 | Really Low | 03:55:58 - 04:25:58 | 3279 |
Oliver | 04:10:59 | -30.1 | Dark | Up | 12.9 | 217.9 | Really Low | 03:55:59 - 04:25:59 | 3271 |
Anarchist Mountain Observatory | 04:11:01 | -30.3 | Dark | Up | 12.9 | 218.1 | Really Low | 03:56:01 - 04:26:01 | 3260 |
Oroville | 04:11:02 | -30.3 | Dark | Up | 13.0 | 218.0 | Really Low | 03:56:02 - 04:26:02 | 3257 |
Tonasket | 04:11:03 | -30.4 | Dark | Up | 13.2 | 218.1 | Really Low | 03:56:03 - 04:26:03 | 3246 |
Okanogan | 04:11:06 | -30.5 | Dark | Up | 13.5 | 218.0 | Really Low | 03:56:06 - 04:26:06 | 3232 |
Brewster | 04:11:05 | -30.4 | Dark | Up | 13.8 | 217.9 | Really Low | 03:56:05 - 04:26:05 | 3222 |
Manson/Chelan | 04:11:04 | -30.3 | Dark | Up | 14.1 | 217.6 | Really Low | 03:56:04 - 04:26:04 | 3218 |
Entiat | 04:11:06 | -30.3 | Dark | Up | 14.3 | 217.6 | Really Low | 03:56:06 - 04:26:06 | 3208 |
Wenatchee | 04:11:05 | -30.4 | Dark | Up | 14.6 | 217.5 | Really Low | 03:56:05 - 04:26:05 | 3197 |
Ellensburg | 04:11:07 | -30.4 | Dark | Up | 15.0 | 217.4 | Really Low | 03:56:07 - 04:26:07 | 3180 |
Yakima | 04:11:08 | -30.5 | Dark | Up | 15.3 | 217.4 | Really Low | 03:56:08 - 04:26:08 | 3160 |
Toppenish/White Swan | 04:11:12 | -30.7 | Dark | Up | 15.4 | 217.6 | Really Low | 03:56:12 - 04:26:12 | 3146 |
Goldendale | 04:11:11 | -30.6 | Dark | Up | 16.0 | 217.4 | Really Low | 03:56:11 - 04:26:11 | 3124 |
Pasco | 04:11:23 | -31.6 | Dark | Up | 14.9 | 218.8 | Really Low | 03:56:23 - 04:26:23 | 3119 |
The Dalles | 04:11:10 | -30.5 | Dark | Up | 16.4 | 217.1 | Really Low | 03:56:10 - 04:26:10 | 3118 |
George/Umatilla | 04:11:22 | -31.6 | Dark | Up | 15.3 | 218.7 | Really Low | 03:56:22 - 04:26:22 | 3105 |
PNWRO | 04:11:25 | -31.9 | Dark | Up | 15.0 | 219.1 | Really Low | 03:56:25 - 04:26:25 | 3102 |
Maupin | 04:11:15 | -30.7 | Dark | Up | 16.6 | 217.3 | Really Low | 03:56:15 - 04:26:15 | 3095 |
Madras/Culver | 04:11:17 | -30.9 | Dark | Up | 17.1 | 217.3 | Really Low | 03:56:17 - 04:26:17 | 3066 |
Sisters | 04:11:15 | -30.7 | Dark | Up | 17.6 | 217.0 | Really Low | 03:56:15 - 04:26:15 | 3055 |
Redmond | 04:11:19 | -31.0 | Dark | Up | 17.4 | 217.4 | Really Low | 03:56:19 - 04:26:19 | 3047 |
Bend | 04:11:18 | -30.9 | Dark | Up | 17.6 | 217.3 | Really Low | 03:56:18 - 04:26:18 | 3038 |
Oregon Observatory | 04:11:20 | -30.9 | Dark | Up | 17.8 | 217.2 | Really Low | 03:56:20 - 04:26:20 | 3030 |
La Pine/Gilchrist | 04:11:18 | -30.9 | Dark | Up | 18.0 | 217.2 | Really Low | 03:56:18 - 04:26:18 | 3020 |
North Lake | 04:11:27 | -31.5 | Dark | Up | 18.1 | 217.8 | Really Low | 03:56:27 - 04:26:27 | 2986 |
Chiloquin | 04:11:22 | -31.1 | Dark | Up | 19.1 | 217.1 | Really Low | 03:56:22 - 04:26:22 | 2963 |
Paisley | 04:11:33 | -32.0 | Dark | Up | 18.3 | 218.3 | Really Low | 03:56:33 - 04:26:33 | 2948 |
Klamath Falls | 04:11:25 | -31.2 | Dark | Up | 19.3 | 217.3 | Really Low | 03:56:25 - 04:26:25 | 2942 |
Tulelake | 04:11:30 | -31.5 | Dark | Up | 19.4 | 217.6 | Really Low | 03:56:30 - 04:26:30 | 2921 |
Lakeview | 04:11:37 | -32.3 | Dark | Up | 18.6 | 218.6 | Really Low | 03:56:37 - 04:26:37 | 2915 |
Cedarville | 04:11:43 | -32.6 | Dark | Up | 19.1 | 218.9 | Really Low | 03:56:43 - 04:26:43 | 2873 |
Fall River/Burney | 04:11:36 | -31.9 | Dark | Up | 20.0 | 217.9 | Low | 03:56:36 - 04:26:36 | 2866 |
Susanville | 04:11:46 | -32.7 | Dark | Up | 20.2 | 218.7 | Low | 03:56:46 - 04:26:46 | 2815 |
Greenville | 04:11:44 | -32.5 | Dark | Up | 20.5 | 218.5 | Low | 03:56:44 - 04:26:44 | 2803 |
Gimple | 04:11:46 | -32.6 | Dark | Up | 20.5 | 218.6 | Low | 03:56:46 - 04:26:46 | 2802 |
Quincy | 04:11:46 | -32.6 | Dark | Up | 20.7 | 218.6 | Low | 03:56:46 - 04:26:46 | 2791 |
Portola | 04:11:51 | -33.0 | Dark | Up | 20.5 | 219.0 | Low | 03:56:51 - 04:26:51 | 2774 |
Reno | 04:11:57 | -33.6 | Dark | Up | 20.4 | 219.7 | Low | 03:56:57 - 04:26:57 | 2746 |
Carson City | 04:11:59 | -33.7 | Dark | Up | 20.7 | 219.8 | Low | 03:56:59 - 04:26:59 | 2723 |
Gardnerville | 04:12:02 | -33.8 | Dark | Up | 20.8 | 219.9 | Low | 03:57:02 - 04:27:02 | 2707 |
Yerington | 04:12:07 | -34.3 | Dark | Up | 20.5 | 220.4 | Low | 03:57:07 - 04:27:07 | 2699 |
Hawthorne | 04:12:13 | -34.8 | Dark | Up | 20.5 | 221.0 | Low | 03:57:13 - 04:27:13 | 2659 |
Lee Vining | 04:12:11 | -34.6 | Dark | Up | 21.2 | 220.7 | Low | 03:57:11 - 04:27:11 | 2631 |
Tonopah | 04:12:28 | -36.1 | Dark | Up | 20.1 | 222.4 | Low | 03:57:28 - 04:27:28 | 2600 |
Bishop | 04:12:22 | -35.4 | Dark | Up | 21.3 | 221.5 | Low | 03:57:22 - 04:27:22 | 2578 |
Lone Pine | 04:12:29 | -35.9 | Dark | Up | 21.7 | 222.0 | Low | 03:57:29 - 04:27:29 | 2520 |
Beatty | 04:12:38 | -36.8 | Dark | Up | 20.7 | 223.1 | Low | 03:57:38 - 04:27:38 | 2514 |
CPSLO | 04:12:13 | -34.2 | Dark | Up | 24.0 | 220.1 | Low | 03:57:13 - 04:27:13 | 2483 |
Niwot | 04:13:44 | -43.8 | Dark | Up | 11.7 | 231.6 | Really Low | 03:58:44 - 04:28:44 | 2473 |
Indian Springs | 04:12:49 | -37.8 | Dark | Up | 20.3 | 224.1 | Low | 03:57:49 - 04:27:49 | 2470 |
SwRI | 04:13:42 | -43.8 | Dark | Up | 11.8 | 231.5 | Really Low | 03:58:42 - 04:28:42 | 2468 |
Henderson | 04:12:57 | -38.5 | Dark | Up | 20.3 | 224.8 | Low | 03:57:57 - 04:27:57 | 2418 |
Searchlight/Boulder City | 04:13:02 | -38.8 | Dark | Up | 20.6 | 225.0 | Low | 03:58:02 - 04:28:02 | 2377 |
Wildwood | 04:12:38 | -36.2 | Dark | Up | 23.8 | 222.3 | Low | 03:57:38 - 04:27:38 | 2357 |
Patrick | 04:13:11 | -39.6 | Dark | Up | 20.1 | 225.9 | Low | 03:58:11 - 04:28:11 | 2350 |
Laughlin/Bullhead City | 04:13:06 | -39.1 | Dark | Up | 20.6 | 225.4 | Low | 03:58:06 - 04:28:06 | 2348 |
Kingman/Dolan Springs | 04:13:10 | -39.6 | Dark | Up | 20.3 | 225.8 | Low | 03:58:10 - 04:28:10 | 2338 |
Mohave Valley | 04:13:08 | -39.2 | Dark | Up | 20.8 | 225.5 | Low | 03:58:08 - 04:28:08 | 2329 |
DCO | 04:13:18 | -40.3 | Dark | Up | 19.8 | 226.5 | Really Low | 03:58:18 - 04:28:18 | 2312 |
Lake Havasu City | 04:13:12 | -39.6 | Dark | Up | 21.0 | 225.8 | Low | 03:58:12 - 04:28:12 | 2295 |
Idyllwild | 04:12:57 | -37.9 | Dark | Up | 22.9 | 224.0 | Low | 03:57:57 - 04:27:57 | 2292 |
Parker | 04:13:16 | -39.7 | Dark | Up | 21.2 | 225.9 | Low | 03:58:16 - 04:28:16 | 2269 |
Blythe | 04:13:14 | -39.7 | Dark | Up | 21.7 | 225.8 | Low | 03:58:14 - 04:28:14 | 2237 |
Calipatria | 04:13:11 | -39.1 | Dark | Up | 22.6 | 225.2 | Low | 03:58:11 - 04:28:11 | 2222 |
Yuma | 04:13:19 | -39.9 | Dark | Up | 22.4 | 226.1 | Low | 03:58:19 - 04:28:19 | 2170 |
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 516977, (2019/10/16 04:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 38.03 157 Nunki 18:55:15.9 -26:17:49 2.0 7.85 125 PPM 235581 19:09:48.2 -19:48:15 6.4 0.71 122 PPM 235649 19:12:44.0 -19:14:11 8.5 0.30 121 PPM 235661 19:13:04.6 -19:29:14 9.1 0.12 121 516977 19:12:34.9 -19:31:50 15.2 121 Positions are for J2000
Event circumstances last updated at 2019/06/07 22:45:28 UT
Marc W. Buie, Southwest Research Institute