Event between (55636) 02TX300 and star GA1240:00260076 with event index number of 244880
Geocentric closest approach at 2020/02/05 06:14:54 UTC
J2000 position of star is 01:24:26.0 +35:16:31
Equinox of date position of star is 01:25:34.5 +35:22:45
Stellar brightness G=13.3,
use SENSEUP=32
Star is 55 degrees from the moon.
Moon is 80% illuminated.
TNO apparent brightness V=20.0
[RECON map]
TNO is 42.7 AU from the Sun
and 42.9 AU from the Earth.
The TNO is moving 15.7
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 119 seconds.
The 1-sigma cross-track error in the shadow position is
1742 km.
The sky-plane scale is
31135.0 km/arcsec.
The TNO has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 76.5 sec chord
Diameter=490.8 km assuming a 30% albedo -- 31.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 55636, (2020/02/05 06:15UT) Object RA Dec mag sep mel Aldebaran 04:37:04.6 +16:32:53 0.8 46.44 14 57Gam1And 02:05:08.5 +42:25:31 2.3 10.42 47 PPM 066368 01:33:16.7 +34:54:10 6.4 1.64 53 PPM 066283 01:27:17.8 +34:41:00 6.7 0.78 54 PPM 066266 01:26:17.2 +35:50:14 8.6 0.48 54 PPM 066250 01:25:37.6 +35:29:41 10.5 0.12 55 55636 01:25:34.7 +35:22:46 13.3 54 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
5.0 sigma about the mid-time.
The median site spacing is 5.8 km
RECON observability=0.7 and success probability=1.5%
Site | Site mid-time (UT) |
Sun alt (deg) |
Sky | Moon | Star alt (deg) |
Star az (deg) |
Target | Observing Time (UT) |
X-track (km) |
Niwot | 06:17:52 | -63.0 | Dark | Up | 13.3 | 305.2 | Really Low | 06:07:26 - 06:28:18 | 5182 |
SwRI | 06:17:53 | -63.0 | Dark | Up | 13.3 | 305.2 | Really Low | 06:07:27 - 06:28:19 | 5175 |
Clarence Fulton | 06:17:13 | -48.8 | Dark | Up | 27.1 | 293.6 | Low | 06:06:47 - 06:27:39 | 4877 |
Kelowna | 06:17:16 | -49.0 | Dark | Up | 27.0 | 293.6 | Low | 06:06:50 - 06:27:42 | 4862 |
Penticton | 06:17:18 | -49.3 | Dark | Up | 26.9 | 293.7 | Low | 06:06:52 - 06:27:44 | 4852 |
Summerland | 06:17:18 | -49.2 | Dark | Up | 27.0 | 293.6 | Low | 06:06:52 - 06:27:44 | 4849 |
Anarchist Mountain Observatory | 06:17:21 | -49.7 | Dark | Up | 26.6 | 294.1 | Low | 06:06:55 - 06:27:47 | 4849 |
Oliver | 06:17:20 | -49.5 | Dark | Up | 26.8 | 293.9 | Low | 06:06:54 - 06:27:46 | 4844 |
Tonasket | 06:17:23 | -49.9 | Dark | Up | 26.5 | 294.2 | Low | 06:06:57 - 06:27:49 | 4838 |
Okanogan | 06:17:26 | -50.1 | Dark | Up | 26.5 | 294.3 | Low | 06:07:00 - 06:27:52 | 4825 |
Brewster | 06:17:27 | -50.2 | Dark | Up | 26.5 | 294.3 | Low | 06:07:01 - 06:27:53 | 4810 |
PNWRO | 06:17:39 | -52.1 | Dark | Up | 25.0 | 295.8 | Low | 06:07:13 - 06:28:05 | 4795 |
Pasco | 06:17:39 | -51.8 | Dark | Up | 25.2 | 295.5 | Low | 06:07:13 - 06:28:05 | 4791 |
Manson/Chelan | 06:17:29 | -50.1 | Dark | Up | 26.6 | 294.2 | Low | 06:07:03 - 06:27:55 | 4790 |
Entiat | 06:17:31 | -50.2 | Dark | Up | 26.5 | 294.2 | Low | 06:07:05 - 06:27:57 | 4782 |
Wenatchee | 06:17:32 | -50.4 | Dark | Up | 26.5 | 294.3 | Low | 06:07:06 - 06:27:58 | 4771 |
Ellensburg | 06:17:35 | -50.5 | Dark | Up | 26.5 | 294.3 | Low | 06:07:09 - 06:28:01 | 4752 |
Toppenish/White Swan | 06:17:39 | -51.0 | Dark | Up | 26.1 | 294.7 | Low | 06:07:13 - 06:28:05 | 4741 |
Yakima | 06:17:38 | -50.8 | Dark | Up | 26.3 | 294.5 | Low | 06:07:12 - 06:28:04 | 4740 |
Goldendale | 06:17:43 | -51.2 | Dark | Up | 26.1 | 294.7 | Low | 06:07:17 - 06:28:09 | 4708 |
George/Scottsdale | 06:18:40 | -64.4 | Dark | Up | 14.0 | 303.3 | Really Low | 06:08:14 - 06:29:06 | 4691 |
DCO | 06:18:35 | -62.6 | Dark | Up | 15.7 | 302.4 | Really Low | 06:08:09 - 06:29:01 | 4688 |
The Dalles | 06:17:44 | -51.1 | Dark | Up | 26.3 | 294.6 | Low | 06:07:18 - 06:28:10 | 4686 |
Maupin | 06:17:47 | -51.5 | Dark | Up | 26.0 | 294.9 | Low | 06:07:21 - 06:28:13 | 4678 |
Victoria | 06:17:28 | -48.1 | Dark | Up | 28.8 | 291.9 | Low | 06:07:02 - 06:27:54 | 4671 |
Patrick | 06:18:35 | -62.0 | Dark | Up | 16.4 | 302.0 | Really Low | 06:08:09 - 06:29:01 | 4668 |
Kingman/Dolan Springs | 06:18:36 | -62.0 | Dark | Up | 16.4 | 302.0 | Really Low | 06:08:10 - 06:29:02 | 4651 |
Redmond | 06:17:52 | -52.0 | Dark | Up | 25.7 | 295.2 | Low | 06:07:26 - 06:28:18 | 4648 |
Henderson | 06:18:33 | -60.9 | Dark | Up | 17.5 | 301.3 | Really Low | 06:08:07 - 06:28:59 | 4641 |
Bend | 06:17:53 | -52.1 | Dark | Up | 25.7 | 295.3 | Low | 06:07:27 - 06:28:19 | 4635 |
Sisters | 06:17:53 | -51.8 | Dark | Up | 25.9 | 295.0 | Low | 06:07:27 - 06:28:19 | 4631 |
Indian Springs | 06:18:31 | -60.1 | Dark | Up | 18.2 | 300.8 | Really Low | 06:08:05 - 06:28:57 | 4631 |
North Lake | 06:17:59 | -52.8 | Dark | Up | 25.0 | 295.8 | Low | 06:07:33 - 06:28:25 | 4628 |
Paisley | 06:18:01 | -53.4 | Dark | Up | 24.5 | 296.3 | Low | 06:07:35 - 06:28:27 | 4626 |
Laughlin/Bullhead City | 06:18:37 | -61.7 | Dark | Up | 16.7 | 301.7 | Really Low | 06:08:11 - 06:29:03 | 4625 |
Oregon Observatory | 06:17:55 | -52.1 | Dark | Up | 25.7 | 295.3 | Low | 06:07:29 - 06:28:21 | 4624 |
Searchlight/Boulder City | 06:18:36 | -61.3 | Dark | Up | 17.1 | 301.5 | Really Low | 06:08:10 - 06:29:02 | 4622 |
Lakeview | 06:18:04 | -53.8 | Dark | Up | 24.2 | 296.6 | Low | 06:07:38 - 06:28:30 | 4618 |
Tonopah | 06:18:26 | -58.2 | Dark | Up | 20.1 | 299.7 | Low | 06:08:00 - 06:28:52 | 4617 |
La Pine/Gilchrist | 06:17:56 | -52.2 | Dark | Up | 25.6 | 295.3 | Low | 06:07:30 - 06:28:22 | 4615 |
Mohave Valley | 06:18:39 | -61.9 | Dark | Up | 16.6 | 301.8 | Really Low | 06:08:13 - 06:29:05 | 4615 |
Lake Havasu City | 06:18:40 | -62.3 | Dark | Up | 16.2 | 302.0 | Really Low | 06:08:14 - 06:29:06 | 4610 |
Cedarville | 06:18:08 | -54.3 | Dark | Up | 23.8 | 296.9 | Low | 06:07:42 - 06:28:34 | 4604 |
Parker | 06:18:43 | -62.5 | Dark | Up | 16.0 | 302.1 | Really Low | 06:08:17 - 06:29:09 | 4597 |
Beatty | 06:18:31 | -59.2 | Dark | Up | 19.2 | 300.2 | Really Low | 06:08:05 - 06:28:57 | 4593 |
Hawthorne | 06:18:24 | -57.1 | Dark | Up | 21.3 | 298.8 | Low | 06:07:58 - 06:28:50 | 4568 |
Blythe | 06:18:46 | -62.6 | Dark | Up | 15.9 | 302.1 | Really Low | 06:08:20 - 06:29:12 | 4561 |
Yerington | 06:18:22 | -56.4 | Dark | Up | 21.9 | 298.4 | Low | 06:07:56 - 06:28:48 | 4561 |
Klamath Falls | 06:18:06 | -52.9 | Dark | Up | 25.1 | 295.8 | Low | 06:07:40 - 06:28:32 | 4554 |
Reno | 06:18:19 | -55.7 | Dark | Up | 22.6 | 297.9 | Low | 06:07:53 - 06:28:45 | 4551 |
Susanville | 06:18:15 | -54.7 | Dark | Up | 23.6 | 297.1 | Low | 06:07:49 - 06:28:41 | 4543 |
Carson City | 06:18:22 | -55.9 | Dark | Up | 22.4 | 298.0 | Low | 06:07:56 - 06:28:48 | 4538 |
Bishop | 06:18:31 | -57.9 | Dark | Up | 20.5 | 299.3 | Low | 06:08:05 - 06:28:57 | 4535 |
Gardnerville | 06:18:24 | -56.1 | Dark | Up | 22.2 | 298.2 | Low | 06:07:58 - 06:28:50 | 4532 |
Fall River/Burney | 06:18:12 | -53.8 | Dark | Up | 24.3 | 296.5 | Low | 06:07:46 - 06:28:38 | 4531 |
Portola | 06:18:19 | -55.1 | Dark | Up | 23.1 | 297.5 | Low | 06:07:53 - 06:28:45 | 4530 |
Lee Vining | 06:18:29 | -57.1 | Dark | Up | 21.3 | 298.8 | Low | 06:08:03 - 06:28:55 | 4524 |
Gimple | 06:18:17 | -54.7 | Dark | Up | 23.6 | 297.2 | Low | 06:07:51 - 06:28:43 | 4523 |
Yuma | 06:18:51 | -63.1 | Dark | Up | 15.4 | 302.3 | Really Low | 06:08:25 - 06:29:17 | 4519 |
Greenville | 06:18:18 | -54.6 | Dark | Up | 23.6 | 297.1 | Low | 06:07:52 - 06:28:44 | 4519 |
Quincy | 06:18:19 | -54.8 | Dark | Up | 23.5 | 297.2 | Low | 06:07:53 - 06:28:45 | 4512 |
Calipatria | 06:18:50 | -62.2 | Dark | Up | 16.3 | 301.9 | Really Low | 06:08:24 - 06:29:16 | 4495 |
Idyllwild | 06:18:48 | -61.1 | Dark | Up | 17.4 | 301.2 | Really Low | 06:08:22 - 06:29:14 | 4466 |
Wildwood | 06:18:49 | -59.5 | Dark | Up | 19.0 | 300.3 | Really Low | 06:08:23 - 06:29:15 | 4389 |
CPSLO | 06:18:45 | -57.4 | Dark | Up | 21.1 | 299.1 | Low | 06:08:19 - 06:29:11 | 4339 |
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 55636, (2020/02/05 06:15UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 46.44 14 57Gam1And 02:03:54.0 +42:19:46 2.3 10.42 47 PPM 066368 01:32:07.6 +34:48:00 6.4 1.64 53 PPM 066283 01:26:09.2 +34:34:45 6.7 0.78 54 PPM 066266 01:25:08.3 +35:43:59 8.6 0.48 54 PPM 066250 01:24:28.9 +35:23:26 10.5 0.12 55 55636 01:24:26.0 +35:16:31 13.3 55 Positions are for J2000
Event circumstances last updated at 2020/01/07 22:59:11 UT
Marc W. Buie, Southwest Research Institute