RECON: TNO occultation with 13PX74

Event between 13PX74 and star GA0820:22472609 with event index number of 2070498

Geocentric closest approach at 2024/09/23 08:57:19 UTC

J2000 position of star is 23:48:44.3 -07:47:35
Equinox of date position of star is 23:49:51.7 -07:40:18
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 79 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 45.6 AU from the Sun and 44.6 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 144 seconds.
The 1-sigma cross-track error in the shadow position is 2501 km.
The sky-plane scale is 32366.6 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=411.2 km assuming a 5% albedo -- 16.6 sec chord
Diameter=167.9 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 13PX74, (2024/09/23 08:58UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:00.6 -29:29:26  1.2 24.91 100
Diphda         00:44:49.7 -17:51:05  2.0 16.79  74
PPM 207992     23:49:48.7 -06:14:35  6.1  1.41  79
PPM 207959     23:48:07.2 -08:45:35  7.7  1.20  80
PPM 208000     23:50:03.4 -07:36:54  9.5  0.04  79
13PX74         23:50:00.6 -07:39:20 14.6        79
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 20.1 km RECON observability=1.0 and success probability=9.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 08:55:20 -40.6 Dark Up 32.0 198.7 Up 08:42:52 - 09:07:47 -3268
Clarence Fulton 08:55:09 -38.1 Dark Up 29.4 202.9 Low 08:42:42 - 09:07:37 -3270
Peachland 08:55:11 -38.7 Dark Up 30.0 202.5 Low 08:42:43 - 09:07:38 -3290
Kelowna 08:55:10 -38.5 Dark Up 29.8 202.8 Low 08:42:43 - 09:07:38 -3291
Summerland 08:55:10 -38.8 Dark Up 30.1 202.6 Up 08:42:43 - 09:07:38 -3303
Penticton 08:55:10 -38.9 Dark Up 30.1 202.8 Up 08:42:43 - 09:07:38 -3310
Oliver 08:55:10 -39.2 Dark Up 30.5 202.9 Up 08:42:42 - 09:07:37 -3334
Anarchist Mountain Observatory 08:55:09 -39.3 Dark Up 30.6 203.1 Up 08:42:42 - 09:07:37 -3351
Tonasket 08:55:10 -39.6 Dark Up 30.9 203.1 Up 08:42:43 - 09:07:38 -3370
Okanogan 08:55:10 -40.0 Dark Up 31.2 203.0 Up 08:42:42 - 09:07:37 -3389
Brewster 08:55:11 -40.3 Dark Up 31.5 202.9 Up 08:42:43 - 09:07:38 -3402
Manson/Chelan 08:55:11 -40.6 Dark Up 31.8 202.5 Up 08:42:44 - 09:07:39 -3405
Wenatchee 08:55:12 -41.0 Dark Up 32.3 202.4 Up 08:42:44 - 09:07:39 -3433
Ellensburg 08:55:12 -41.5 Dark Up 32.7 202.3 Up 08:42:44 - 09:07:39 -3455
Yakima 08:55:12 -41.9 Dark Up 33.1 202.3 Up 08:42:45 - 09:07:40 -3483
Toppenish/White Swan 08:55:12 -42.0 Dark Up 33.3 202.6 Up 08:42:44 - 09:07:39 -3504
Goldendale 08:55:13 -42.6 Dark Up 33.9 202.3 Up 08:42:46 - 09:07:41 -3530
The Dalles 08:55:15 -42.9 Dark Up 34.2 201.9 Up 08:42:47 - 09:07:42 -3535
Pasco 08:55:10 -41.8 Dark Up 33.0 204.1 Up 08:42:42 - 09:07:37 -3551
Maupin 08:55:13 -43.3 Dark Up 34.6 202.1 Up 08:42:46 - 09:07:41 -3568
PNWRO 08:55:08 -42.0 Dark Up 33.2 204.4 Up 08:42:41 - 09:07:36 -3575
Sisters 08:55:15 -44.3 Dark Up 35.5 201.8 Up 08:42:48 - 09:07:43 -3616
Redmond 08:55:14 -44.2 Dark Up 35.4 202.3 Up 08:42:47 - 09:07:42 -3630
Bend 08:55:15 -44.4 Dark Up 35.6 202.2 Up 08:42:47 - 09:07:42 -3642
Oregon Observatory 08:55:15 -44.6 Dark Up 35.8 202.0 Up 08:42:47 - 09:07:42 -3650
La Pine/Gilchrist 08:55:16 -44.8 Dark Up 36.0 202.0 Up 08:42:48 - 09:07:43 -3663
North Lake 08:55:13 -45.1 Dark Up 36.3 202.9 Up 08:42:46 - 09:07:41 -3714
Chiloquin 08:55:16 -46.0 Dark Up 37.2 201.9 Up 08:42:49 - 09:07:44 -3735
Klamath Falls 08:55:16 -46.3 Dark Up 37.5 202.1 Up 08:42:48 - 09:07:43 -3763
Paisley 08:55:12 -45.5 Dark Up 36.7 203.4 Up 08:42:45 - 09:07:40 -3767
Lakeview 08:55:12 -45.9 Dark Up 37.1 203.8 Up 08:42:45 - 09:07:40 -3811
Fall River/Burney 08:55:15 -47.3 Dark Up 38.5 202.9 Up 08:42:48 - 09:07:43 -3865
Cedarville 08:55:12 -46.5 Dark Up 37.6 204.2 Up 08:42:44 - 09:07:39 -3867
Susanville 08:55:13 -47.6 Dark Up 38.8 204.0 Up 08:42:46 - 09:07:41 -3938
Greenville 08:55:14 -48.0 Dark Up 39.2 203.8 Up 08:42:47 - 09:07:42 -3949
Gimple 08:55:14 -47.9 Dark Up 39.1 203.9 Up 08:42:46 - 09:07:41 -3953
Quincy 08:55:15 -48.2 Dark Up 39.3 203.8 Up 08:42:47 - 09:07:42 -3965
Portola 08:55:13 -48.1 Dark Up 39.3 204.4 Up 08:42:45 - 09:07:40 -3991
Reno 08:55:12 -48.2 Dark Up 39.3 205.3 Up 08:42:44 - 09:07:39 -4034
Carson City 08:55:11 -48.5 Dark Up 39.7 205.5 Up 08:42:43 - 09:07:38 -4063
Gardnerville 08:55:12 -48.7 Dark Up 39.9 205.6 Up 08:42:44 - 09:07:39 -4084
Yerington 08:55:09 -48.5 Dark Up 39.6 206.3 Up 08:42:42 - 09:07:37 -4100
Hawthorne 08:55:08 -48.7 Dark Up 39.8 207.1 Up 08:42:41 - 09:07:36 -4155
Lee Vining 08:55:10 -49.4 Dark Up 40.5 206.7 Up 08:42:42 - 09:07:37 -4184
Tonopah 08:55:04 -48.6 Dark Up 39.7 209.0 Up 08:42:37 - 09:07:32 -4241
Bishop 08:55:07 -49.7 Dark Up 40.8 207.8 Up 08:42:40 - 09:07:35 -4258
CPSLO 08:55:15 -52.3 Dark Up 43.4 205.9 Up 08:42:48 - 09:07:43 -4350
Beatty 08:55:03 -49.4 Dark Up 40.6 210.0 Up 08:42:35 - 09:07:30 -4353
Indian Springs 08:54:59 -49.3 Dark Up 40.4 211.4 Up 08:42:32 - 09:07:27 -4417
Dunrhomin 08:54:32 -41.4 Dark Up 32.6 221.1 Up 08:42:05 - 09:07:00 -4456
Henderson 08:54:58 -49.4 Dark Up 40.6 212.4 Up 08:42:30 - 09:07:25 -4487
Wildwood 08:55:09 -52.6 Dark Up 43.7 209.0 Up 08:42:42 - 09:07:37 -4525
Laughlin/Bullhead City 08:54:57 -50.0 Dark Up 41.1 213.3 Up 08:42:29 - 09:07:24 -4576
Patrick 08:54:54 -49.5 Dark Up 40.6 214.0 Up 08:42:27 - 09:07:22 -4580
Kingman/Dolan Springs 08:54:55 -49.7 Dark Up 40.9 213.9 Up 08:42:27 - 09:07:22 -4592
Mohave Valley 08:54:57 -50.2 Dark Up 41.4 213.5 Up 08:42:29 - 09:07:24 -4600
Idyllwild 08:55:04 -52.1 Dark Up 43.3 211.5 Up 08:42:36 - 09:07:31 -4623
Lake Havasu City 08:54:56 -50.4 Dark Up 41.6 213.9 Up 08:42:28 - 09:07:23 -4643
Parker 08:54:57 -50.7 Dark Up 41.9 214.2 Up 08:42:30 - 09:07:25 -4675
Blythe 08:54:57 -51.3 Dark Up 42.4 214.1 Up 08:42:29 - 09:07:24 -4710
Calipatria 08:55:00 -52.1 Dark Up 43.3 213.2 Up 08:42:32 - 09:07:27 -4720
Yuma 08:54:58 -52.0 Dark Up 43.2 214.5 Up 08:42:30 - 09:07:25 -4790
George/Scottsdale 08:54:49 -49.8 Dark Up 41.0 217.2 Up 08:42:21 - 09:07:16 -4799

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 13PX74, (2024/09/23 08:58UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 24.91 100
Diphda         00:43:35.7 -17:59:11  2.0 16.79  74
PPM 207992     23:48:32.5 -06:22:50  6.1  1.41  79
PPM 207959     23:46:50.9 -08:53:50  7.7  1.20  80
PPM 208000     23:48:47.2 -07:45:10  9.5  0.04  79
13PX74         23:48:44.3 -07:47:35 14.6        79
Positions are for J2000

Event circumstances last updated at 2021/10/29 23:15:06 UT

Marc W. Buie, Southwest Research Institute

RECON