RECON: TNO occultation with 05PT21

Event between 05PT21 and star GA0900:00011468 with event index number of 1696667

Geocentric closest approach at 2021/08/16 05:46:43 UTC

J2000 position of star is 00:07:37.1 +00:13:11
Equinox of date position of star is 00:08:42.6 +00:20:17
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 48.7 AU from the Sun and 47.9 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 295 seconds.
The 1-sigma cross-track error in the shadow position is 2416 km.
The sky-plane scale is 34761.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=223.9 km assuming a 5% albedo -- 11.9 sec chord
Diameter=91.4 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 05PT21, (2021/08/16 05:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:50.4 -29:30:26  1.2 34.19  92
Algenib        00:14:21.1 +15:18:13  2.8 15.03 126
PPM 181887     00:09:18.6 -02:19:39  6.1  2.67 119
PPM 143189     00:09:58.8 +00:48:46  8.4  0.57 121
PPM 143134     00:07:14.6 +00:14:30  8.8  0.38 120
PPM 143151     00:08:15.3 +00:27:36 10.9  0.17 120
05PT21         00:08:43.6 +00:20:24 16.9       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 3.1 sigma about the mid-time.
The median site spacing is 13.2 km RECON observability=0.2 and success probability=0.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:47:53 -19.7 Dark Up 13.2 106.0 Really Low 05:32:53 - 06:02:53 -4159
Kelowna 05:47:53 -20.0 Dark Up 13.2 105.8 Really Low 05:32:53 - 06:02:53 -4170
Peachland 05:47:53 -19.9 Dark Up 13.0 105.5 Really Low 05:32:53 - 06:02:53 -4170
Summerland 05:47:53 -20.1 Dark Up 13.1 105.5 Really Low 05:32:53 - 06:02:53 -4176
Penticton 05:47:53 -20.2 Dark Up 13.2 105.6 Really Low 05:32:53 - 06:02:53 -4179
Victoria 05:47:53 -19.5 Dark Up 11.0 102.4 Really Low 05:32:53 - 06:02:53 -4179
Oliver 05:47:53 -20.5 Dark Up 13.3 105.5 Really Low 05:32:53 - 06:02:53 -4191
Anarchist Mountain Observatory 05:47:53 -20.7 Dark Up 13.5 105.7 Really Low 05:32:53 - 06:02:53 -4198
Tonasket 05:47:53 -20.9 Dark Up 13.5 105.5 Really Low 05:32:53 - 06:02:53 -4209
Okanogan 05:47:53 -21.1 Dark Up 13.5 105.3 Really Low 05:32:53 - 06:02:53 -4220
Brewster 05:47:53 -21.3 Dark Up 13.5 105.1 Really Low 05:32:53 - 06:02:53 -4229
Manson/Chelan 05:47:53 -21.3 Dark Up 13.3 104.8 Really Low 05:32:53 - 06:02:53 -4233
Wenatchee 05:47:53 -21.6 Dark Up 13.3 104.5 Really Low 05:32:53 - 06:02:53 -4251
Ellensburg 05:47:53 -21.9 Dark Up 13.2 104.3 Really Low 05:32:53 - 06:02:53 -4267
Yakima 05:47:53 -22.2 Dark Up 13.3 104.2 Really Low 05:32:53 - 06:02:53 -4285
Toppenish/White Swan 05:47:53 -22.4 Dark Up 13.5 104.2 Really Low 05:32:53 - 06:02:53 -4297
Pasco 05:47:53 -23.1 Dark Up 14.4 105.2 Really Low 05:32:53 - 06:02:53 -4314
Goldendale 05:47:53 -22.7 Dark Up 13.3 103.8 Really Low 05:32:53 - 06:02:53 -4319
The Dalles 05:47:53 -22.7 Dark Up 13.1 103.5 Really Low 05:32:53 - 06:02:53 -4327
PNWRO 05:47:53 -23.3 Dark Up 14.6 105.3 Really Low 05:32:53 - 06:02:53 -4328
Sisters 05:48:28 -23.7 Dark Up 13.3 103.0 Really Low 05:33:28 - 06:03:28 -4340
Redmond 05:48:28 -23.8 Dark Up 13.6 103.3 Really Low 05:33:28 - 06:03:28 -4345
Maupin 05:47:53 -23.1 Dark Up 13.3 103.4 Really Low 05:32:53 - 06:02:53 -4349
Bend 05:48:29 -24.0 Dark Up 13.5 103.1 Really Low 05:33:29 - 06:03:29 -4352
Oregon Observatory 05:48:30 -24.0 Dark Up 13.5 103.0 Really Low 05:33:30 - 06:03:30 -4358
La Pine/Gilchrist 05:48:31 -24.2 Dark Up 13.5 102.9 Really Low 05:33:31 - 06:03:31 -4365
North Lake 05:48:33 -24.8 Dark Up 14.0 103.2 Really Low 05:33:33 - 06:03:33 -4390
Chiloquin 05:48:38 -24.9 Dark Up 13.5 102.4 Really Low 05:33:38 - 06:03:38 -4408
Paisley 05:48:35 -25.4 Dark Up 14.4 103.4 Really Low 05:33:35 - 06:03:35 -4418
Klamath Falls 05:48:39 -25.2 Dark Up 13.6 102.4 Really Low 05:33:39 - 06:03:39 -4424
Lakeview 05:48:38 -25.9 Dark Up 14.7 103.4 Really Low 05:33:38 - 06:03:38 -4442
Cedarville 05:48:41 -26.5 Dark Up 14.9 103.4 Really Low 05:33:41 - 06:03:41 -4474
Fall River/Burney 05:48:45 -26.3 Dark Up 14.2 102.4 Really Low 05:33:45 - 06:03:45 -4481
Susanville 05:48:47 -27.2 Dark Up 14.9 102.8 Really Low 05:33:47 - 06:03:47 -4519
Greenville 05:48:49 -27.2 Dark Up 14.7 102.5 Really Low 05:33:49 - 06:03:49 -4528
Gimple 05:48:49 -27.3 Dark Up 14.8 102.5 Really Low 05:33:49 - 06:03:49 -4529
Quincy 05:48:50 -27.4 Dark Up 14.8 102.4 Really Low 05:33:50 - 06:03:50 -4538
Portola 05:48:50 -27.7 Dark Up 15.1 102.7 Really Low 05:33:50 - 06:03:50 -4550
Reno 05:48:51 -28.2 Dark Up 15.7 103.1 Really Low 05:33:51 - 06:03:51 -4571
Carson City 05:48:52 -28.5 Dark Up 15.8 103.0 Really Low 05:33:52 - 06:03:52 -4589
Gardnerville 05:48:53 -28.8 Dark Up 15.9 103.0 Really Low 05:33:53 - 06:03:53 -4601
Yerington 05:48:52 -29.0 Dark Up 16.3 103.4 Really Low 05:33:52 - 06:03:52 -4607
Hawthorne 05:48:54 -29.6 Dark Up 16.8 103.6 Really Low 05:33:54 - 06:03:54 -4638
Lee Vining 05:48:58 -29.8 Dark Up 16.6 103.2 Really Low 05:33:58 - 06:03:58 -4659
Tonopah 05:48:54 -30.7 Dark Up 18.0 104.5 Really Low 05:33:54 - 06:03:54 -4682
Bishop 05:48:59 -30.7 Dark Up 17.3 103.5 Really Low 05:33:59 - 06:03:59 -4701
Beatty 05:48:59 -31.8 Dark Up 18.7 104.4 Really Low 05:33:59 - 06:03:59 -4750
CPSLO 05:49:13 -31.2 Dark Up 16.0 101.4 Really Low 05:34:13 - 06:04:13 -4781
Indian Springs 05:48:59 -32.6 Dark Up 19.6 105.0 Really Low 05:33:59 - 06:03:59 -4785
Dunrhomin 05:47:53 -33.2 Dark Up 25.9 114.0 Low 05:32:53 - 06:02:53 -4817
Henderson 05:49:00 -33.3 Dark Up 20.3 105.3 Low 05:34:00 - 06:04:00 -4827
Wildwood 05:49:16 -33.2 Dark Up 17.9 102.4 Really Low 05:34:16 - 06:04:16 -4879
Patrick 05:49:01 -34.4 Dark Up 21.3 105.8 Low 05:34:01 - 06:04:01 -4881
Laughlin/Bullhead City 05:49:04 -34.3 Dark Up 20.8 105.3 Low 05:34:04 - 06:04:04 -4883
Kingman/Dolan Springs 05:49:03 -34.5 Dark Up 21.2 105.6 Low 05:34:03 - 06:04:03 -4890
Mohave Valley 05:49:05 -34.5 Dark Up 20.9 105.2 Low 05:34:05 - 06:04:05 -4899
Lake Havasu City 05:49:06 -34.9 Dark Up 21.2 105.2 Low 05:34:06 - 06:04:06 -4926
Idyllwild 05:49:15 -34.4 Dark Up 19.5 103.4 Really Low 05:34:15 - 06:04:15 -4929
Parker 05:49:08 -35.2 Dark Up 21.4 105.1 Low 05:34:08 - 06:04:08 -4947
Blythe 05:49:11 -35.5 Dark Up 21.3 104.7 Low 05:34:11 - 06:04:11 -4973
Calipatria 05:49:15 -35.5 Dark Up 20.6 103.9 Low 05:34:15 - 06:04:15 -4986
George/Scottsdale 05:49:05 -36.7 Dark Up 23.4 106.5 Low 05:34:05 - 06:04:05 -5017
Yuma 05:49:16 -36.3 Dark Up 21.5 104.3 Low 05:34:16 - 06:04:16 -5028

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 05PT21, (2021/08/16 05:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 34.19  92
Algenib        00:13:14.2 +15:11:01  2.8 15.03 126
PPM 181887     00:08:12.1 -02:26:52  6.1  2.67 119
PPM 143189     00:08:52.3 +00:41:33  8.4  0.57 121
PPM 143134     00:06:08.1 +00:07:17  8.8  0.38 120
PPM 143151     00:07:08.8 +00:20:23 10.9  0.17 120
05PT21         00:07:37.1 +00:13:11 16.9       120
Positions are for J2000

Event circumstances last updated at 2021/04/19 23:04:27 UT

Marc W. Buie, Southwest Research Institute

RECON