RECON: TNO occultation with 308933

Event between (308933) 06SQ372 and star GA0960:00095024 with event index number of 2185980

Geocentric closest approach at 2022/10/04 11:57:19 UTC

J2000 position of star is 01:03:51.0 +06:53:13
Equinox of date position of star is 01:04:59.2 +07:00:14
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 67% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 31.3 AU from the Sun and 30.3 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 66 seconds.
The 1-sigma cross-track error in the shadow position is 1352 km.
The sky-plane scale is 21953.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 7.1 sec chord
Diameter=67.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 

Star training set for 308933, (2022/10/04 11:58UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:24.6 +15:18:36  2.8 14.93  70
71Eps Psc      01:04:07.6 +08:00:43  4.3  1.03  77
PPM 144219     01:04:58.2 +06:53:11  7.5  0.12  76
308933         01:05:02.0 +07:00:31 15.9        77
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 26.1 km RECON observability=1.0 and success probability=2.1%
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 11:53:42 -21.1 Dark Down 26.4 247.2 Low 11:47:41 - 11:59:42 5741
Kelowna 11:53:42 -21.3 Dark Down 26.6 247.3 Low 11:47:41 - 11:59:42 5703
Peachland 11:53:42 -21.5 Dark Down 26.8 247.1 Low 11:47:41 - 11:59:42 5696
Summerland 11:53:42 -21.5 Dark Down 26.8 247.2 Low 11:47:42 - 11:59:43 5680
Penticton 11:53:41 -21.5 Dark Down 26.8 247.3 Low 11:47:41 - 11:59:42 5671
Oliver 11:53:41 -21.6 Dark Down 26.9 247.5 Low 11:47:40 - 11:59:41 5636
Victoria 11:53:48 -24.2 Dark Down 29.5 244.4 Low 11:47:47 - 11:59:48 5622
Anarchist Mountain Observatory 11:53:40 -21.5 Dark Down 26.9 247.8 Low 11:47:40 - 11:59:41 5616
Tonasket 11:53:40 -21.7 Dark Down 27.1 247.8 Low 11:47:40 - 11:59:41 5585
Okanogan 11:53:40 -21.9 Dark Down 27.3 247.9 Low 11:47:40 - 11:59:41 5553
Brewster 11:53:41 -22.1 Dark Down 27.5 247.8 Low 11:47:40 - 11:59:41 5528
Manson/Chelan 11:53:41 -22.4 Dark Down 27.8 247.6 Low 11:47:40 - 11:59:41 5512
Wenatchee 11:53:41 -22.6 Dark Down 28.1 247.7 Low 11:47:40 - 11:59:41 5465
Ellensburg 11:53:41 -22.9 Dark Down 28.4 247.7 Low 11:47:41 - 11:59:42 5426
Yakima 11:53:40 -23.1 Dark Down 28.6 247.9 Low 11:47:40 - 11:59:41 5384
Toppenish/White Swan 11:53:40 -23.0 Dark Down 28.5 248.1 Low 11:47:39 - 11:59:40 5360
Pasco 11:53:38 -22.2 Dark Down 27.8 249.3 Low 11:47:37 - 11:59:38 5330
Goldendale 11:53:41 -23.5 Dark Down 29.0 248.0 Low 11:47:40 - 11:59:41 5309
PNWRO 11:53:37 -22.2 Dark Down 27.7 249.6 Low 11:47:36 - 11:59:37 5302
The Dalles 11:53:41 -23.8 Dark Down 29.3 247.8 Low 11:47:40 - 11:59:41 5291
Maupin 11:53:40 -23.9 Dark Down 29.4 248.2 Low 11:47:40 - 11:59:41 5246
Sisters 11:53:41 -24.5 Dark Down 30.1 248.2 Up 11:47:40 - 11:59:41 5162
Redmond 11:53:40 -24.2 Dark Down 29.8 248.6 Low 11:47:39 - 11:59:40 5154
Bend 11:53:40 -24.4 Dark Down 30.0 248.6 Low 11:47:39 - 11:59:40 5133
Oregon Observatory 11:53:40 -24.5 Dark Down 30.1 248.5 Up 11:47:39 - 11:59:40 5117
La Pine/Gilchrist 11:53:40 -24.6 Dark Down 30.3 248.6 Up 11:47:40 - 11:59:41 5097
North Lake 11:53:39 -24.4 Dark Down 30.0 249.3 Up 11:47:38 - 11:59:39 5042
Chiloquin 11:53:40 -25.2 Dark Down 30.9 248.9 Up 11:47:40 - 11:59:41 4986
Paisley 11:53:37 -24.3 Dark Down 29.9 249.9 Low 11:47:37 - 11:59:38 4979
Klamath Falls 11:53:39 -25.3 Dark Down 31.0 249.2 Up 11:47:39 - 11:59:40 4949
Lakeview 11:53:36 -24.3 Dark Down 30.0 250.4 Low 11:47:36 - 11:59:37 4923
Cedarville 11:53:36 -24.4 Dark Down 30.1 250.9 Up 11:47:36 - 11:59:37 4851
Fall River/Burney 11:53:38 -25.4 Dark Down 31.1 250.1 Up 11:47:38 - 11:59:39 4819
Susanville 11:53:37 -25.0 Dark Down 30.8 251.1 Up 11:47:36 - 11:59:37 4740
Greenville 11:53:37 -25.3 Dark Down 31.1 251.0 Up 11:47:36 - 11:59:37 4716
Gimple 11:53:37 -25.3 Dark Down 31.0 251.1 Up 11:47:36 - 11:59:37 4714
Quincy 11:53:37 -25.4 Dark Down 31.2 251.1 Up 11:47:37 - 11:59:38 4694
Portola 11:53:36 -25.1 Dark Down 30.9 251.6 Up 11:47:35 - 11:59:36 4673
Reno 11:53:34 -24.7 Dark Down 30.5 252.2 Up 11:47:34 - 11:59:35 4635
Carson City 11:53:34 -24.8 Dark Down 30.6 252.4 Up 11:47:34 - 11:59:35 4597
Gardnerville 11:53:34 -24.8 Dark Down 30.6 252.6 Up 11:47:34 - 11:59:35 4570
Yerington 11:53:33 -24.3 Dark Down 30.1 253.0 Up 11:47:33 - 11:59:34 4566
Dunrhomin 11:53:11 -13.6 AT Down 19.4 262.4 Really Low 11:47:10 - 11:59:11 4565
Hawthorne 11:53:32 -24.1 Dark Down 29.9 253.7 Low 11:47:32 - 11:59:33 4509
Lee Vining 11:53:33 -24.6 Dark Down 30.4 253.6 Up 11:47:32 - 11:59:33 4455
Tonopah 11:53:28 -23.1 Dark Down 29.0 255.0 Low 11:47:28 - 11:59:29 4439
Bishop 11:53:31 -24.2 Dark Down 30.0 254.5 Up 11:47:31 - 11:59:32 4380
Beatty 11:53:27 -23.0 Dark Down 28.9 255.9 Low 11:47:27 - 11:59:28 4308
Indian Springs 11:53:25 -22.2 Dark Down 28.1 256.8 Low 11:47:25 - 11:59:26 4258
CPSLO 11:53:35 -26.4 Dark Down 32.3 254.1 Up 11:47:35 - 11:59:36 4193
Henderson 11:53:24 -21.8 Dark Down 27.7 257.6 Low 11:47:23 - 11:59:24 4191
Patrick 11:53:22 -21.0 Dark Down 27.0 258.7 Low 11:47:21 - 11:59:22 4110
Laughlin/Bullhead City 11:53:23 -21.6 Dark Down 27.6 258.3 Low 11:47:23 - 11:59:24 4091
Kingman/Dolan Springs 11:53:22 -21.2 Dark Down 27.2 258.6 Low 11:47:21 - 11:59:22 4088
Mohave Valley 11:53:23 -21.7 Dark Down 27.6 258.5 Low 11:47:22 - 11:59:23 4062
Wildwood 11:53:30 -25.1 Dark Down 31.0 256.2 Up 11:47:30 - 11:59:31 4030
Lake Havasu City 11:53:22 -21.5 Dark Down 27.5 258.8 Low 11:47:22 - 11:59:23 4015
Parker 11:53:22 -21.6 Dark Down 27.6 259.0 Low 11:47:22 - 11:59:23 3976
Idyllwild 11:53:27 -23.6 Dark Down 29.6 257.7 Low 11:47:26 - 11:59:27 3963
Blythe 11:53:23 -21.9 Dark Down 27.9 259.1 Low 11:47:22 - 11:59:23 3922
George/Scottsdale 11:53:18 -19.6 Dark Down 25.6 260.8 Low 11:47:17 - 11:59:18 3902
Calipatria 11:53:24 -22.7 Dark Down 28.7 258.8 Low 11:47:24 - 11:59:25 3880
Yuma 11:53:22 -22.1 Dark Down 28.1 259.6 Low 11:47:22 - 11:59:23 3822

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 308933, (2022/10/04 11:58UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 14.93  70
71Eps Psc      01:02:56.5 +07:53:25  4.3  1.03  77
PPM 144219     01:03:47.2 +06:45:53  7.5  0.12  76
308933         01:03:51.0 +06:53:13 15.9        76
Positions are for J2000

Event circumstances last updated at 2021/11/08 00:16:31 UT

Marc W. Buie, Southwest Research Institute

RECON