RECON: TNO occultation with 491767

Event between (491767) 12VU113 and star GA0980:00289305 with event index number of 2318152

Geocentric closest approach at 2022/11/08 03:32:13 UTC

J2000 position of star is 03:21:51.3 +09:21:07
Equinox of date position of star is 03:23:02.0 +09:25:44
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 12 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 36.8 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 239 seconds.
The 1-sigma cross-track error in the shadow position is 5945 km.
The sky-plane scale is 25956.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=173.8 km assuming a 5% albedo -- 6.6 sec chord
Diameter=70.9 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 491767, (2022/11/08 03:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.1 +16:33:12  0.8 19.40  28
Menkar         03:03:28.6 +04:10:41  2.5  7.16  13
1Omi Tau       03:26:02.8 +09:06:28  3.6  0.80  13
PPM 146488     03:22:31.7 +09:44:26  8.0  0.34  12
PPM 146497     03:23:03.7 +09:18:44  8.8  0.12  12
PPM 146493     03:22:48.0 +09:26:32 10.7  0.07  12
491767         03:23:05.5 +09:25:57 15.6        12
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 3.8 sigma about the mid-time.
The median site spacing is 18.9 km RECON observability=1.0 and success probability=2.9%
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 03:34:11 -30.6 Dark Up 20.6 100.4 Low 03:19:11 - 03:49:11 11470
Kelowna 03:34:12 -30.6 Dark Up 20.6 100.1 Low 03:19:12 - 03:49:12 11448
Peachland 03:34:12 -30.4 Dark Up 20.4 99.9 Low 03:19:12 - 03:49:12 11446
Summerland 03:34:13 -30.5 Dark Up 20.5 99.9 Low 03:19:13 - 03:49:13 11436
Penticton 03:34:13 -30.6 Dark Up 20.6 99.9 Low 03:19:13 - 03:49:13 11430
Victoria 03:34:20 -28.3 Dark Up 18.2 96.6 Really Low 03:19:20 - 03:49:20 11426
Oliver 03:34:14 -30.7 Dark Up 20.6 99.8 Low 03:19:14 - 03:49:14 11408
Anarchist Mountain Observatory 03:34:15 -30.8 Dark Up 20.8 99.9 Low 03:19:15 - 03:49:15 11395
Tonasket 03:34:16 -30.9 Dark Up 20.8 99.7 Low 03:19:16 - 03:49:16 11376
Okanogan 03:34:18 -30.8 Dark Up 20.8 99.5 Low 03:19:18 - 03:49:18 11357
Brewster 03:34:18 -30.7 Dark Up 20.7 99.2 Low 03:19:18 - 03:49:18 11343
Manson/Chelan 03:34:20 -30.5 Dark Up 20.5 98.9 Low 03:19:20 - 03:49:20 11336
Wenatchee 03:34:21 -30.5 Dark Up 20.4 98.6 Low 03:19:21 - 03:49:21 11308
Ellensburg 03:34:23 -30.4 Dark Up 20.4 98.3 Low 03:19:23 - 03:49:23 11285
Yakima 03:34:24 -30.5 Dark Up 20.4 98.1 Low 03:19:24 - 03:49:24 11259
Toppenish/White Swan 03:34:25 -30.6 Dark Up 20.6 98.2 Low 03:19:25 - 03:49:25 11242
Pasco 03:34:24 -31.5 Dark Up 21.4 99.1 Low 03:19:24 - 03:49:24 11213
Goldendale 03:34:27 -30.4 Dark Up 20.3 97.6 Low 03:19:27 - 03:49:27 11212
The Dalles 03:34:29 -30.2 Dark Up 20.1 97.3 Low 03:19:29 - 03:49:29 11203
PNWRO 03:34:25 -31.7 Dark Up 21.6 99.2 Low 03:19:25 - 03:49:25 11193
Maupin 03:34:30 -30.3 Dark Up 20.3 97.2 Low 03:19:30 - 03:49:30 11173
Sisters 03:34:33 -30.1 Dark Up 20.0 96.5 Low 03:19:33 - 03:49:33 11122
Redmond 03:34:33 -30.4 Dark Up 20.3 96.8 Low 03:19:33 - 03:49:33 11113
Bend 03:34:34 -30.3 Dark Up 20.2 96.6 Low 03:19:34 - 03:49:34 11101
Oregon Observatory 03:34:34 -30.2 Dark Up 20.2 96.5 Low 03:19:34 - 03:49:34 11091
La Pine/Gilchrist 03:34:35 -30.2 Dark Up 20.1 96.4 Low 03:19:35 - 03:49:35 11078
North Lake 03:34:36 -30.7 Dark Up 20.6 96.6 Low 03:19:36 - 03:49:36 11038
Chiloquin 03:34:39 -30.0 Dark Up 20.0 95.7 Low 03:19:39 - 03:49:39 11006
Paisley 03:34:38 -31.0 Dark Up 21.0 96.7 Low 03:19:38 - 03:49:38 10992
Klamath Falls 03:34:40 -30.1 Dark Up 20.1 95.7 Low 03:19:40 - 03:49:40 10980
Lakeview 03:34:39 -31.2 Dark Up 21.2 96.6 Low 03:19:39 - 03:49:39 10953
Cedarville 03:34:41 -31.4 Dark Up 21.4 96.5 Low 03:19:41 - 03:49:41 10902
Fall River/Burney 03:34:44 -30.5 Dark Up 20.5 95.5 Low 03:19:44 - 03:49:44 10888
Susanville 03:34:46 -31.1 Dark Up 21.2 95.8 Low 03:19:46 - 03:49:46 10828
Greenville 03:34:46 -30.9 Dark Up 21.0 95.5 Low 03:19:46 - 03:49:46 10813
Gimple 03:34:46 -31.0 Dark Up 21.0 95.5 Low 03:19:46 - 03:49:46 10811
Quincy 03:34:47 -31.0 Dark Up 21.0 95.4 Low 03:19:47 - 03:49:47 10797
Portola 03:34:47 -31.3 Dark Up 21.4 95.7 Low 03:19:47 - 03:49:47 10780
Reno 03:34:47 -31.9 Dark Up 21.9 96.0 Low 03:19:47 - 03:49:47 10748
Carson City 03:34:48 -31.9 Dark Up 21.9 95.9 Low 03:19:48 - 03:49:48 10720
Gardnerville 03:34:49 -32.0 Dark Up 22.0 95.8 Low 03:19:49 - 03:49:49 10700
Yerington 03:34:48 -32.4 Dark Up 22.5 96.2 Low 03:19:48 - 03:49:48 10693
Hawthorne 03:34:49 -32.9 Dark Up 22.9 96.4 Low 03:19:49 - 03:49:49 10648
Lee Vining 03:34:51 -32.5 Dark Up 22.6 95.8 Low 03:19:51 - 03:49:51 10613
Tonopah 03:34:49 -34.0 Dark Up 24.1 97.1 Low 03:19:49 - 03:49:49 10585
Bishop 03:34:53 -33.1 Dark Up 23.2 96.1 Low 03:19:53 - 03:49:53 10552
Dunrhomin 03:34:24 -42.7 Dark Up 32.7 106.9 Up 03:19:24 - 03:49:24 10525
Beatty 03:34:51 -34.5 Dark Up 24.6 96.9 Low 03:19:51 - 03:49:51 10484
Indian Springs 03:34:51 -35.4 Dark Up 25.5 97.4 Low 03:19:51 - 03:49:51 10437
CPSLO 03:35:01 -31.4 Dark Up 21.6 93.8 Low 03:20:01 - 03:50:01 10429
Henderson 03:34:52 -36.0 Dark Up 26.1 97.6 Low 03:19:52 - 03:49:52 10379
Patrick 03:34:52 -36.9 Dark Up 27.1 98.0 Low 03:19:52 - 03:49:52 10306
Laughlin/Bullhead City 03:34:53 -36.4 Dark Up 26.6 97.5 Low 03:19:53 - 03:49:53 10299
Kingman/Dolan Springs 03:34:54 -36.8 Dark Up 27.0 97.8 Low 03:19:54 - 03:49:54 10291
Wildwood 03:35:02 -33.2 Dark Up 23.4 94.5 Low 03:20:02 - 03:50:02 10290
Mohave Valley 03:34:54 -36.4 Dark Up 26.6 97.3 Low 03:19:54 - 03:49:54 10276
Lake Havasu City 03:34:55 -36.7 Dark Up 26.9 97.3 Low 03:19:55 - 03:49:55 10238
Idyllwild 03:35:00 -34.8 Dark Up 25.0 95.5 Low 03:20:00 - 03:50:00 10223
Parker 03:34:56 -36.7 Dark Up 26.9 97.1 Low 03:19:56 - 03:49:56 10208
Blythe 03:34:58 -36.5 Dark Up 26.8 96.7 Low 03:19:58 - 03:49:58 10170
Calipatria 03:35:00 -35.8 Dark Up 26.0 95.9 Low 03:20:00 - 03:50:00 10147
George/Scottsdale 03:34:53 -38.8 Dark Up 29.0 98.4 Low 03:19:53 - 03:49:53 10122
Yuma 03:35:01 -36.6 Dark Up 26.8 96.2 Low 03:20:01 - 03:50:01 10092

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 491767, (2022/11/08 03:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.40  28
Menkar         03:02:16.8 +04:05:21  2.5  7.16  13
1Omi Tau       03:24:48.7 +09:01:42  3.6  0.80  13
PPM 146488     03:21:17.4 +09:39:35  8.0  0.34  12
PPM 146497     03:21:49.6 +09:13:54  8.8  0.12  12
PPM 146493     03:21:33.8 +09:21:41 10.7  0.07  12
491767         03:21:51.3 +09:21:07 15.6        12
Positions are for J2000

Event circumstances last updated at 2021/10/14 01:50:56 UT

Marc W. Buie, Southwest Research Institute

RECON