RECON: TNO occultation with 385266

Event between (385266) 01QB298 and star GA0880:19252711 with event index number of 1217787

Geocentric closest approach at 2022/09/16 08:21:54 UTC

J2000 position of star is 23:42:56.9 -00:02:03
Equinox of date position of star is 23:44:04.0 +00:05:13
Stellar brightness G=12.1, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 70 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 40.4 AU from the Sun and 39.4 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 129 seconds.
The 1-sigma cross-track error in the shadow position is 2279 km.
The sky-plane scale is 28598.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 10.6 sec chord
Diameter=107.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 385266, (2022/09/16 08:22UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:54.0 -29:30:05  1.2 31.50  93
Algenib        00:14:24.5 +15:18:35  2.8 16.96  57
18Lam Psc      23:43:12.4 +01:54:19  4.5  1.83  70
PPM 181680     23:41:52.4 -00:15:26  8.5  0.66  71
PPM 174345     23:43:05.6 +00:07:41  9.3  0.26  70
385266         23:44:06.7 +00:05:31 12.1        70
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 20.2 km RECON observability=1.0 and success probability=7.9%
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 08:20:25 -36.8 Dark Up 39.5 186.9 Up 08:09:11 - 08:31:39 5115
Victoria 08:20:37 -38.8 Dark Up 41.4 181.7 Up 08:09:23 - 08:31:51 5112
Peachland 08:20:25 -37.3 Dark Up 40.0 186.4 Up 08:09:11 - 08:31:39 5094
Kelowna 08:20:25 -37.2 Dark Up 39.9 186.7 Up 08:09:11 - 08:31:39 5093
Summerland 08:20:26 -37.5 Dark Up 40.2 186.5 Up 08:09:12 - 08:31:40 5081
Penticton 08:20:25 -37.5 Dark Up 40.2 186.7 Up 08:09:11 - 08:31:39 5073
Oliver 08:20:25 -37.9 Dark Up 40.6 186.7 Up 08:09:11 - 08:31:39 5048
Anarchist Mountain Observatory 08:20:25 -38.0 Dark Up 40.7 187.0 Up 08:09:11 - 08:31:39 5031
Tonasket 08:20:25 -38.3 Dark Up 41.1 186.9 Up 08:09:11 - 08:31:39 5011
Okanogan 08:20:27 -38.7 Dark Up 41.4 186.8 Up 08:09:13 - 08:31:41 4992
Brewster 08:20:27 -39.0 Dark Up 41.7 186.5 Up 08:09:13 - 08:31:41 4978
Manson/Chelan 08:20:28 -39.2 Dark Up 41.9 186.0 Up 08:09:14 - 08:31:42 4974
Wenatchee 08:20:30 -39.7 Dark Up 42.4 185.9 Up 08:09:16 - 08:31:44 4945
Ellensburg 08:20:30 -40.1 Dark Up 42.8 185.6 Up 08:09:16 - 08:31:44 4922
Yakima 08:20:32 -40.5 Dark Up 43.2 185.6 Up 08:09:18 - 08:31:46 4893
Toppenish/White Swan 08:20:31 -40.7 Dark Up 43.4 185.9 Up 08:09:17 - 08:31:45 4872
Goldendale 08:20:33 -41.3 Dark Up 44.0 185.4 Up 08:09:19 - 08:31:47 4845
The Dalles 08:20:34 -41.6 Dark Up 44.3 184.9 Up 08:09:20 - 08:31:48 4839
Pasco 08:20:27 -40.7 Dark Up 43.5 187.6 Up 08:09:13 - 08:31:41 4825
Maupin 08:20:33 -42.0 Dark Up 44.7 185.1 Up 08:09:19 - 08:31:47 4805
PNWRO 08:20:27 -40.9 Dark Up 43.7 188.0 Up 08:09:13 - 08:31:41 4800
Sisters 08:20:36 -42.9 Dark Up 45.6 184.4 Up 08:09:22 - 08:31:50 4755
Redmond 08:20:35 -42.9 Dark Up 45.6 185.0 Up 08:09:21 - 08:31:49 4741
Bend 08:20:36 -43.1 Dark Up 45.8 184.8 Up 08:09:22 - 08:31:50 4729
Oregon Observatory 08:20:37 -43.3 Dark Up 46.0 184.7 Up 08:09:23 - 08:31:51 4720
La Pine/Gilchrist 08:20:37 -43.5 Dark Up 46.2 184.6 Up 08:09:23 - 08:31:51 4707
North Lake 08:20:35 -43.9 Dark Up 46.6 185.5 Up 08:09:21 - 08:31:49 4655
Chiloquin 08:20:39 -44.6 Dark Up 47.3 184.2 Up 08:09:25 - 08:31:53 4633
Klamath Falls 08:20:39 -45.0 Dark Up 47.7 184.3 Up 08:09:25 - 08:31:53 4604
Paisley 08:20:35 -44.4 Dark Up 47.1 186.1 Up 08:09:21 - 08:31:49 4601
Lakeview 08:20:34 -44.9 Dark Up 47.6 186.4 Up 08:09:20 - 08:31:48 4555
Fall River/Burney 08:20:39 -46.1 Dark Up 48.8 185.0 Up 08:09:25 - 08:31:53 4500
Cedarville 08:20:35 -45.5 Dark Up 48.2 186.8 Up 08:09:21 - 08:31:49 4498
Susanville 08:20:39 -46.7 Dark Up 49.4 186.2 Up 08:09:25 - 08:31:53 4425
Greenville 08:20:39 -47.0 Dark Up 49.7 185.8 Up 08:09:25 - 08:31:53 4413
Gimple 08:20:39 -47.0 Dark Up 49.7 185.9 Up 08:09:25 - 08:31:53 4410
Quincy 08:20:39 -47.2 Dark Up 49.9 185.8 Up 08:09:25 - 08:31:53 4397
Portola 08:20:38 -47.2 Dark Up 50.0 186.6 Up 08:09:24 - 08:31:52 4371
Reno 08:20:36 -47.4 Dark Up 50.2 187.6 Up 08:09:22 - 08:31:50 4328
Carson City 08:20:36 -47.8 Dark Up 50.5 187.7 Up 08:09:22 - 08:31:50 4298
Gardnerville 08:20:36 -48.0 Dark Up 50.8 187.8 Up 08:09:22 - 08:31:50 4276
Yerington 08:20:35 -47.9 Dark Up 50.6 188.7 Up 08:09:21 - 08:31:49 4260
Hawthorne 08:20:33 -48.3 Dark Up 51.0 189.6 Up 08:09:19 - 08:31:47 4204
Lee Vining 08:20:35 -48.9 Dark Up 51.7 189.0 Up 08:09:21 - 08:31:49 4174
Tonopah 08:20:30 -48.5 Dark Up 51.3 192.0 Up 08:09:16 - 08:31:44 4118
Bishop 08:20:34 -49.4 Dark Up 52.2 190.3 Up 08:09:20 - 08:31:48 4099
Beatty 08:20:29 -49.5 Dark Up 52.3 193.0 Up 08:09:15 - 08:31:43 4004
CPSLO 08:20:45 -51.7 Dark Up 54.5 187.0 Up 08:09:31 - 08:31:59 4003
Indian Springs 08:20:26 -49.6 Dark Up 52.5 194.8 Up 08:09:12 - 08:31:40 3939
Dunrhomin 08:19:50 -43.0 Dark Up 46.0 208.5 Up 08:08:36 - 08:31:04 3912
Henderson 08:20:24 -49.9 Dark Up 52.8 196.1 Up 08:09:10 - 08:31:38 3868
Wildwood 08:20:39 -52.6 Dark Up 55.4 190.8 Up 08:09:25 - 08:31:53 3826
Laughlin/Bullhead City 08:20:24 -50.6 Dark Up 53.6 197.1 Up 08:09:10 - 08:31:38 3778
Patrick 08:20:22 -50.2 Dark Up 53.2 198.1 Up 08:09:08 - 08:31:36 3775
Kingman/Dolan Springs 08:20:23 -50.5 Dark Up 53.4 197.9 Up 08:09:09 - 08:31:37 3762
Mohave Valley 08:20:24 -50.9 Dark Up 53.8 197.2 Up 08:09:10 - 08:31:38 3753
Idyllwild 08:20:32 -52.5 Dark Up 55.4 194.1 Up 08:09:18 - 08:31:46 3727
Lake Havasu City 08:20:24 -51.2 Dark Up 54.1 197.8 Up 08:09:10 - 08:31:38 3709
Parker 08:20:24 -51.5 Dark Up 54.5 198.0 Up 08:09:10 - 08:31:38 3677
Blythe 08:20:26 -52.1 Dark Up 55.0 197.7 Up 08:09:12 - 08:31:40 3641
Calipatria 08:20:29 -52.8 Dark Up 55.7 196.4 Up 08:09:15 - 08:31:43 3630
Yuma 08:20:27 -53.0 Dark Up 55.9 198.1 Up 08:09:13 - 08:31:41 3559
George/Scottsdale 08:20:16 -51.2 Dark Up 54.2 202.2 Up 08:09:02 - 08:31:30 3553

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 385266, (2022/09/16 08:22UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 31.50  93
Algenib        00:13:14.2 +15:11:01  2.8 16.96  57
18Lam Psc      23:42:02.6 +01:46:45  4.5  1.83  70
PPM 181680     23:40:42.5 -00:23:00  8.5  0.66  71
PPM 174345     23:41:55.7 +00:00:07  9.3  0.26  70
385266         23:42:56.9 -00:02:03 12.1        70
Positions are for J2000

Event circumstances last updated at 2021/10/25 23:28:58 UT

Marc W. Buie, Southwest Research Institute

RECON