RECON: TNO occultation with 03HM57

Event between 03HM57 and star GA0540:25505713 with event index number of 1999726

Geocentric closest approach at 2021/07/08 06:36:45 UTC

J2000 position of star is 17:55:41.0 -34:38:01
Equinox of date position of star is 17:57:06.4 -34:38:08
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=20.2

[RECON map]
TNO is 14.8 AU from the Sun and 13.8 AU from the Earth.
The TNO is moving 18.5 km/sec on the sky relative to the star, or, 6.7 arcsec/hr.
The 1-sigma error in the time of the event is 125 seconds.
The 1-sigma cross-track error in the shadow position is 592 km.
The sky-plane scale is 10010.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=120.2 km assuming a 5% albedo -- 6.5 sec chord
Diameter=49.1 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 03HM57, (2021/07/08 06:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.8 -26:28:40  0.9 20.25 163
Kap Sco        17:43:58.7 -39:02:20  2.4  5.13 166
PPM 296948     17:54:45.7 -34:44:02  6.3  0.49 170
PPM 296988     17:56:18.9 -34:45:12  8.5  0.20 170
03HM57         17:57:07.0 -34:38:08 16.9       170
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 13.6 km RECON observability=0.2 and success probability=0.0%
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 06:37:19 -14.9 AT Down 5.1 178.0 Really Low 06:26:24 - 06:48:14 5404
Kelowna 06:37:19 -15.2 AT Down 5.5 177.8 Really Low 06:26:24 - 06:48:14 5398
Peachland 06:37:20 -15.3 AT Down 5.6 177.6 Really Low 06:26:25 - 06:48:15 5395
Summerland 06:37:20 -15.4 AT Down 5.7 177.7 Really Low 06:26:25 - 06:48:15 5394
Penticton 06:37:20 -15.5 AT Down 5.8 177.8 Really Low 06:26:25 - 06:48:15 5394
Oliver 06:37:20 -15.9 AT Down 6.2 177.8 Really Low 06:26:25 - 06:48:15 5390
Anarchist Mountain Observatory 06:37:19 -16.1 AT Down 6.3 177.9 Really Low 06:26:24 - 06:48:14 5390
Tonasket 06:37:20 -16.3 AT Down 6.6 177.9 Really Low 06:26:25 - 06:48:15 5385
Okanogan 06:37:20 -16.6 AT Down 7.0 177.7 Really Low 06:26:25 - 06:48:15 5379
Brewster 06:37:21 -16.8 AT Down 7.2 177.6 Really Low 06:26:26 - 06:48:16 5374
Manson/Chelan 06:37:22 -16.9 AT Down 7.4 177.3 Really Low 06:26:27 - 06:48:17 5368
Wenatchee 06:37:23 -17.3 AT Down 7.9 177.1 Really Low 06:26:28 - 06:48:18 5359
Ellensburg 06:37:24 -17.7 AT Down 8.3 176.9 Really Low 06:26:29 - 06:48:19 5351
Victoria 06:37:35 -15.5 AT Down 6.6 174.6 Really Low 06:26:40 - 06:48:30 5349
Pasco 06:37:19 -18.7 Dark Down 9.1 178.1 Really Low 06:26:24 - 06:48:14 5349
PNWRO 06:37:18 -19.0 Dark Down 9.3 178.3 Really Low 06:26:23 - 06:48:13 5346
Yakima 06:37:24 -18.0 Dark Down 8.7 176.9 Really Low 06:26:29 - 06:48:19 5344
Toppenish/White Swan 06:37:24 -18.3 Dark Down 8.9 177.1 Really Low 06:26:29 - 06:48:19 5341
Goldendale 06:37:25 -18.7 Dark Down 9.5 176.7 Really Low 06:26:30 - 06:48:20 5328
The Dalles 06:37:27 -18.8 Dark Down 9.7 176.4 Really Low 06:26:32 - 06:48:22 5320
Maupin 06:37:27 -19.2 Dark Down 10.1 176.5 Really Low 06:26:32 - 06:48:22 5313
Redmond 06:37:27 -20.0 Dark Down 11.0 176.4 Really Low 06:26:32 - 06:48:22 5294
Sisters 06:37:29 -19.9 Dark Down 11.0 176.1 Really Low 06:26:34 - 06:48:24 5291
Bend 06:37:28 -20.2 Dark Down 11.2 176.3 Really Low 06:26:33 - 06:48:23 5288
Oregon Observatory 06:37:29 -20.3 Dark Down 11.4 176.2 Really Low 06:26:34 - 06:48:24 5283
La Pine/Gilchrist 06:37:29 -20.5 Dark Down 11.6 176.1 Really Low 06:26:34 - 06:48:24 5278
North Lake 06:37:26 -21.0 Dark Down 12.0 176.6 Really Low 06:26:31 - 06:48:21 5273
Paisley 06:37:25 -21.7 Dark Down 12.6 176.9 Really Low 06:26:30 - 06:48:20 5263
Lakeview 06:37:25 -22.2 Dark Down 13.1 177.1 Really Low 06:26:30 - 06:48:20 5252
Chiloquin 06:37:31 -21.4 Dark Down 12.7 175.8 Really Low 06:26:36 - 06:48:26 5247
Klamath Falls 06:37:31 -21.7 Dark Down 13.0 175.9 Really Low 06:26:36 - 06:48:26 5239
Dunrhomin 06:36:17 -26.9 Dark Down 14.4 189.7 Really Low 06:25:22 - 06:47:12 5239
Cedarville 06:37:24 -22.8 Dark Down 13.8 177.2 Really Low 06:26:29 - 06:48:19 5236
Fall River/Burney 06:37:29 -22.9 Dark Down 14.2 176.2 Really Low 06:26:34 - 06:48:24 5211
Susanville 06:37:26 -23.7 Dark Down 14.9 176.8 Really Low 06:26:31 - 06:48:21 5200
Gimple 06:37:27 -23.9 Dark Down 15.1 176.6 Really Low 06:26:32 - 06:48:22 5190
Greenville 06:37:27 -23.9 Dark Down 15.1 176.5 Really Low 06:26:32 - 06:48:22 5189
Portola 06:37:25 -24.3 Dark Down 15.5 176.9 Really Low 06:26:30 - 06:48:20 5184
Quincy 06:37:27 -24.1 Dark Down 15.3 176.5 Really Low 06:26:32 - 06:48:22 5183
Reno 06:37:22 -24.8 Dark Down 15.8 177.5 Really Low 06:26:27 - 06:48:17 5182
Carson City 06:37:22 -25.1 Dark Down 16.1 177.5 Really Low 06:26:27 - 06:48:17 5171
Yerington 06:37:20 -25.5 Dark Down 16.3 178.0 Really Low 06:26:25 - 06:48:15 5170
Gardnerville 06:37:22 -25.4 Dark Down 16.4 177.5 Really Low 06:26:27 - 06:48:17 5164
Hawthorne 06:37:17 -26.1 Dark Down 16.8 178.5 Really Low 06:26:22 - 06:48:12 5159
Tonopah 06:37:11 -26.9 Dark Down 17.3 179.7 Really Low 06:26:16 - 06:48:06 5155
Lee Vining 06:37:19 -26.4 Dark Down 17.4 178.0 Really Low 06:26:24 - 06:48:14 5138
Bishop 06:37:15 -27.2 Dark Down 18.0 178.7 Really Low 06:26:20 - 06:48:10 5122
Beatty 06:37:08 -28.1 Dark Down 18.5 180.0 Really Low 06:26:13 - 06:48:03 5117
Indian Springs 06:37:03 -28.7 Dark Down 18.8 181.0 Really Low 06:26:08 - 06:47:58 5112
Henderson 06:37:00 -29.4 Dark Down 19.3 181.6 Really Low 06:26:05 - 06:47:55 5096
Patrick 06:36:54 -30.2 Dark Down 19.9 182.5 Really Low 06:25:59 - 06:47:49 5077
Kingman/Dolan Springs 06:36:55 -30.4 Dark Down 20.1 182.4 Low 06:26:00 - 06:47:50 5068
Laughlin/Bullhead City 06:36:58 -30.3 Dark Down 20.2 181.9 Low 06:26:03 - 06:47:53 5065
Mohave Valley 06:36:57 -30.5 Dark Down 20.4 181.9 Low 06:26:02 - 06:47:52 5054
Lake Havasu City 06:36:57 -31.0 Dark Down 20.8 182.1 Low 06:26:02 - 06:47:52 5040
CPSLO 06:37:26 -28.4 Dark Down 20.0 176.7 Really Low 06:26:31 - 06:48:21 5027
Parker 06:36:56 -31.3 Dark Down 21.2 182.2 Low 06:26:01 - 06:47:51 5026
George/Scottsdale 06:36:44 -32.3 Dark Down 21.5 184.3 Low 06:25:49 - 06:47:39 5017
Blythe 06:36:57 -31.8 Dark Down 21.7 181.9 Low 06:26:02 - 06:47:52 5003
Wildwood 06:37:17 -30.2 Dark Down 21.3 178.4 Low 06:26:22 - 06:48:12 4998
Idyllwild 06:37:07 -31.1 Dark Down 21.6 180.1 Low 06:26:12 - 06:48:02 4998
Calipatria 06:37:02 -32.0 Dark Down 22.2 181.1 Low 06:26:07 - 06:47:57 4978
Yuma 06:36:57 -32.6 Dark Down 22.6 181.9 Low 06:26:02 - 06:47:52 4964

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 03HM57, (2021/07/08 06:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.25 163
Kap Sco        17:42:29.3 -39:01:49  2.4  5.13 166
PPM 296948     17:53:19.6 -34:43:51  6.3  0.49 170
PPM 296988     17:54:52.8 -34:45:04  8.5  0.20 170
03HM57         17:55:41.0 -34:38:01 16.9       170
Positions are for J2000

Event circumstances last updated at 2021/05/17 01:04:36 UT

Marc W. Buie, Southwest Research Institute

RECON