Event between (309139) 06XQ51 and star GA0720:04065974 with event index number of 181314
Geocentric closest approach at 2019/02/11 08:11:59 UTC
J2000 position of star is 08:43:56.9 -16:27:30
Equinox of date position of star is 08:44:48.2 -16:31:33
Stellar brightness G=15.1,
use SENSEUP=128
Star is 100 degrees from the moon.
Moon is 34% illuminated.
TNO apparent brightness V=22.5
[RECON map]
TNO is 18.1 AU from the Sun
and 17.3 AU from the Earth.
The TNO is moving 24.1
km/sec on the sky relative to the star, or,
6.9 arcsec/hr.
The 1-sigma error in the time of the event is 365 seconds.
The 1-sigma cross-track error in the shadow position is
4663 km.
The sky-plane scale is
12520.8 km/arcsec.
The TNO has an absolute magnitude Hv=9.8
Diameter=66.1 km assuming a 5% albedo -- 2.7 sec chord
Diameter=27.0 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 309139, (2019/02/11 08:12UT) Object RA Dec mag sep mel Adhara 06:59:22.7 -28:59:57 1.5 27.23 78 15Rho Pup 08:08:21.5 -24:21:37 2.8 11.58 92 9 Hya 08:42:36.6 -16:00:47 4.6 0.74 99 PPM 220513 08:43:33.4 -16:03:20 8.3 0.56 99 PPM 220527 08:44:32.9 -16:38:28 8.8 0.13 100 309139 08:44:50.0 -16:31:42 15.1 100 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
2.5 sigma about the mid-time.
The median site spacing is 10.4 km
RECON observability=1.0 and success probability=3.6%
| Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
| Penticton | 08:12:44 | -54.5 | Dark | Down | 22.9 | 194.3 | Low | 07:57:44 - 08:27:44 | 4792 |
| Oroville | 08:12:44 | -55.1 | Dark | Down | 23.5 | 194.5 | Low | 07:57:44 - 08:27:44 | 4772 |
| Tonasket | 08:12:44 | -55.4 | Dark | Down | 23.7 | 194.5 | Low | 07:57:44 - 08:27:44 | 4763 |
| Okanogan | 08:12:44 | -55.7 | Dark | Down | 24.0 | 194.4 | Low | 07:57:44 - 08:27:44 | 4748 |
| Brewster | 08:12:44 | -56.0 | Dark | Down | 24.3 | 194.2 | Low | 07:57:44 - 08:27:44 | 4733 |
| Manson/Chelan | 08:12:44 | -56.2 | Dark | Down | 24.6 | 193.9 | Low | 07:57:44 - 08:27:44 | 4717 |
| Entiat | 08:12:44 | -56.4 | Dark | Down | 24.8 | 193.8 | Low | 07:57:44 - 08:27:44 | 4707 |
| Wenatchee | 08:12:44 | -56.7 | Dark | Down | 25.1 | 193.8 | Low | 07:57:44 - 08:27:44 | 4695 |
| Ellensburg | 08:12:44 | -57.1 | Dark | Down | 25.5 | 193.6 | Low | 07:57:44 - 08:27:44 | 4673 |
| Pasco | 08:12:36 | -57.8 | Dark | Down | 26.0 | 195.1 | Low | 07:57:36 - 08:27:36 | 4670 |
| PNWRO | 08:12:35 | -58.1 | Dark | Down | 26.2 | 195.4 | Low | 07:57:35 - 08:27:35 | 4665 |
| Yakima | 08:12:44 | -57.5 | Dark | Down | 25.9 | 193.6 | Low | 07:57:44 - 08:27:44 | 4656 |
| George/Umatilla | 08:12:36 | -58.2 | Dark | Down | 26.4 | 194.9 | Low | 07:57:36 - 08:27:36 | 4652 |
| Toppenish/White Swan | 08:12:40 | -57.7 | Dark | Down | 26.1 | 193.8 | Low | 07:57:40 - 08:27:40 | 4650 |
| Niwot | 08:11:43 | -61.1 | Dark | Down | 27.8 | 210.5 | Low | 07:56:43 - 08:26:43 | 4635 |
| Goldendale | 08:12:40 | -58.2 | Dark | Down | 26.7 | 193.4 | Low | 07:57:40 - 08:27:40 | 4617 |
| The Dalles | 08:12:44 | -58.5 | Dark | Down | 27.0 | 193.1 | Low | 07:57:44 - 08:27:44 | 4600 |
| Maupin | 08:12:40 | -58.9 | Dark | Down | 27.4 | 193.2 | Low | 07:57:40 - 08:27:40 | 4584 |
| Madras/Culver | 08:12:40 | -59.4 | Dark | Down | 27.9 | 193.2 | Low | 07:57:40 - 08:27:40 | 4558 |
| Redmond | 08:12:39 | -59.8 | Dark | Down | 28.3 | 193.2 | Low | 07:57:39 - 08:27:39 | 4540 |
| Sisters | 08:12:40 | -59.7 | Dark | Down | 28.3 | 192.8 | Low | 07:57:40 - 08:27:40 | 4533 |
| Bend | 08:12:39 | -60.0 | Dark | Down | 28.5 | 193.1 | Low | 07:57:39 - 08:27:39 | 4527 |
| Oregon Observatory | 08:12:39 | -60.1 | Dark | Down | 28.7 | 193.0 | Low | 07:57:39 - 08:27:39 | 4516 |
| La Pine/Gilchrist | 08:12:39 | -60.4 | Dark | Down | 28.9 | 192.9 | Low | 07:57:39 - 08:27:39 | 4505 |
| North Lake | 08:12:37 | -60.8 | Dark | Down | 29.2 | 193.6 | Low | 07:57:37 - 08:27:37 | 4498 |
| Paisley | 08:12:35 | -61.4 | Dark | Down | 29.7 | 194.1 | Low | 07:57:35 - 08:27:35 | 4479 |
| Lakeview | 08:12:34 | -61.9 | Dark | Down | 30.2 | 194.4 | Up | 07:57:34 - 08:27:34 | 4458 |
| Chiloquin | 08:12:39 | -61.4 | Dark | Down | 30.0 | 192.7 | Up | 07:57:39 - 08:27:39 | 4444 |
| Cedarville | 08:12:33 | -62.5 | Dark | Down | 30.8 | 194.6 | Up | 07:57:33 - 08:27:33 | 4429 |
| Klamath Falls | 08:12:38 | -61.8 | Dark | Down | 30.4 | 192.8 | Up | 07:57:38 - 08:27:38 | 4429 |
| Tulelake | 08:12:37 | -62.1 | Dark | Down | 30.6 | 193.2 | Up | 07:57:37 - 08:27:37 | 4422 |
| Fall River/Burney | 08:12:35 | -63.0 | Dark | Down | 31.5 | 193.4 | Up | 07:57:35 - 08:27:35 | 4377 |
| Susanville | 08:12:32 | -63.6 | Dark | Down | 31.9 | 194.3 | Up | 07:57:32 - 08:27:32 | 4361 |
| Gimple | 08:12:33 | -63.9 | Dark | Down | 32.2 | 194.1 | Up | 07:57:33 - 08:27:33 | 4342 |
| Greenville | 08:12:33 | -63.9 | Dark | Down | 32.3 | 194.0 | Up | 07:57:33 - 08:27:33 | 4340 |
| Reno | 08:12:28 | -64.5 | Dark | Down | 32.6 | 195.3 | Up | 07:57:28 - 08:27:28 | 4334 |
| Portola | 08:12:31 | -64.3 | Dark | Down | 32.5 | 194.6 | Up | 07:57:31 - 08:27:31 | 4334 |
| Quincy | 08:12:33 | -64.1 | Dark | Down | 32.4 | 194.0 | Up | 07:57:33 - 08:27:33 | 4329 |
| Yerington | 08:12:25 | -65.1 | Dark | Down | 33.0 | 196.1 | Up | 07:57:25 - 08:27:25 | 4319 |
| Carson City | 08:12:27 | -64.9 | Dark | Down | 33.0 | 195.4 | Up | 07:57:27 - 08:27:27 | 4315 |
| Tonopah | 08:12:17 | -65.9 | Dark | Down | 33.5 | 198.4 | Up | 07:57:17 - 08:27:17 | 4311 |
| Hawthorne | 08:12:23 | -65.5 | Dark | Down | 33.3 | 196.8 | Up | 07:57:23 - 08:27:23 | 4305 |
| Gardnerville | 08:12:27 | -65.1 | Dark | Down | 33.2 | 195.5 | Up | 07:57:27 - 08:27:27 | 4303 |
| Lee Vining | 08:12:23 | -66.1 | Dark | Down | 34.0 | 196.4 | Up | 07:57:23 - 08:27:23 | 4263 |
| Indian Springs | 08:12:10 | -67.2 | Dark | Down | 34.5 | 200.5 | Up | 07:57:10 - 08:27:10 | 4260 |
| Beatty | 08:12:14 | -67.0 | Dark | Down | 34.4 | 199.2 | Up | 07:57:14 - 08:27:14 | 4256 |
| Bishop | 08:12:20 | -66.7 | Dark | Down | 34.4 | 197.3 | Up | 07:57:20 - 08:27:20 | 4246 |
| Henderson | 08:12:06 | -67.7 | Dark | Down | 34.8 | 201.3 | Up | 07:57:06 - 08:27:06 | 4244 |
| Patrick | 08:12:02 | -68.1 | Dark | Down | 35.0 | 202.7 | Up | 07:57:02 - 08:27:02 | 4231 |
| DCO | 08:11:58 | -68.2 | Dark | Down | 35.1 | 203.6 | Up | 07:56:58 - 08:26:58 | 4227 |
| Kingman/Dolan Springs | 08:12:02 | -68.3 | Dark | Down | 35.3 | 202.6 | Up | 07:57:02 - 08:27:02 | 4214 |
| Searchlight/Boulder City | 08:12:05 | -68.2 | Dark | Down | 35.3 | 201.6 | Up | 07:57:05 - 08:27:05 | 4212 |
| Lone Pine | 08:12:18 | -67.4 | Dark | Down | 35.0 | 197.8 | Up | 07:57:18 - 08:27:18 | 4210 |
| Laughlin/Bullhead City | 08:12:04 | -68.5 | Dark | Down | 35.5 | 202.0 | Up | 07:57:04 - 08:27:04 | 4202 |
| Mohave Valley | 08:12:03 | -68.7 | Dark | Down | 35.7 | 202.1 | Up | 07:57:03 - 08:27:03 | 4186 |
| Lake Havasu City | 08:12:02 | -69.1 | Dark | Down | 36.0 | 202.5 | Up | 07:57:02 - 08:27:02 | 4167 |
| Parker | 08:12:01 | -69.4 | Dark | Down | 36.3 | 202.6 | Up | 07:57:01 - 08:27:01 | 4146 |
| Blythe | 08:12:01 | -70.0 | Dark | Down | 36.9 | 202.4 | Up | 07:57:01 - 08:27:01 | 4108 |
| CPSLO | 08:12:25 | -68.7 | Dark | Down | 36.9 | 195.1 | Up | 07:57:25 - 08:27:25 | 4072 |
| Idyllwild | 08:12:09 | -70.2 | Dark | Down | 37.4 | 200.0 | Up | 07:57:09 - 08:27:09 | 4068 |
| Calipatria | 08:12:03 | -70.6 | Dark | Down | 37.6 | 201.5 | Up | 07:57:03 - 08:27:03 | 4057 |
| Yuma | 08:11:59 | -70.9 | Dark | Down | 37.8 | 202.6 | Up | 07:56:59 - 08:26:59 | 4050 |
| Wildwood | 08:12:16 | -70.0 | Dark | Down | 37.6 | 197.7 | Up | 07:57:16 - 08:27:16 | 4047 |
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 309139, (2019/02/11 08:12UT) Object RA Dec mag sep mel Adhara 06:58:37.6 -28:58:19 1.5 27.23 78 15Rho Pup 08:07:32.5 -24:18:15 2.8 11.58 92 9 Hya 08:41:43.4 -15:56:38 4.6 0.74 99 PPM 220513 08:42:40.2 -15:59:10 8.3 0.56 99 PPM 220527 08:43:39.9 -16:34:16 8.8 0.13 100 309139 08:43:56.9 -16:27:30 15.1 100 Positions are for J2000
Event circumstances last updated at 2018/06/11 17:21:51 UT
Marc W. Buie, Southwest Research Institute