RECON: TNO occultation with 13PX74

Event between 13PX74 and star GA0820:22472609 with event index number of 1421622

Geocentric closest approach at 2024/09/23 08:58:13 UTC

J2000 position of star is 23:48:44.3 -07:47:35
Equinox of date position of star is 23:49:49.6 -07:40:32
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 80 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 178 seconds.
The 1-sigma cross-track error in the shadow position is 3000 km.
The sky-plane scale is 32366.5 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=407.4 km assuming a 5% albedo -- 16.0 sec chord
Diameter=166.3 km assuming a 30% albedo -- 6.5 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 20.2 km RECON observability=1.0 and success probability=12.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 08:56:13 -40.6 Dark Up 31.9 198.9 Up 08:41:13 - 09:11:13 -1590
Clarence Fulton 08:56:02 -38.1 Dark Up 29.4 203.1 Low 08:41:02 - 09:11:02 -1591
Peachland 08:56:03 -38.7 Dark Up 29.9 202.7 Low 08:41:03 - 09:11:03 -1611
Kelowna 08:56:02 -38.5 Dark Up 29.8 203.0 Low 08:41:02 - 09:11:02 -1613
Summerland 08:56:03 -38.8 Dark Up 30.0 202.9 Up 08:41:03 - 09:11:03 -1624
Penticton 08:56:03 -38.8 Dark Up 30.1 203.0 Up 08:41:03 - 09:11:03 -1632
Oliver 08:56:03 -39.2 Dark Up 30.4 203.1 Up 08:41:03 - 09:11:03 -1656
Anarchist Mountain Observatory 08:56:02 -39.3 Dark Up 30.5 203.4 Up 08:41:02 - 09:11:02 -1672
Tonasket 08:56:02 -39.6 Dark Up 30.8 203.3 Up 08:41:02 - 09:11:02 -1692
Okanogan 08:56:03 -39.9 Dark Up 31.2 203.3 Up 08:41:03 - 09:11:03 -1710
Brewster 08:56:03 -40.2 Dark Up 31.5 203.1 Up 08:41:03 - 09:11:03 -1723
Manson/Chelan 08:56:04 -40.5 Dark Up 31.7 202.7 Up 08:41:04 - 09:11:04 -1727
Wenatchee 08:56:04 -41.0 Dark Up 32.2 202.7 Up 08:41:04 - 09:11:04 -1755
Ellensburg 08:56:05 -41.4 Dark Up 32.7 202.5 Up 08:41:05 - 09:11:05 -1777
Yakima 08:56:05 -41.8 Dark Up 33.1 202.6 Up 08:41:05 - 09:11:05 -1805
Toppenish/White Swan 08:56:05 -42.0 Dark Up 33.2 202.8 Up 08:41:05 - 09:11:05 -1825
Goldendale 08:56:06 -42.6 Dark Up 33.8 202.5 Up 08:41:06 - 09:11:06 -1852
The Dalles 08:56:06 -42.9 Dark Up 34.1 202.1 Up 08:41:06 - 09:11:06 -1857
Pasco 08:56:01 -41.8 Dark Up 33.0 204.3 Up 08:41:01 - 09:11:01 -1872
Maupin 08:56:06 -43.3 Dark Up 34.5 202.4 Up 08:41:06 - 09:11:06 -1890
PNWRO 08:56:01 -41.9 Dark Up 33.1 204.6 Up 08:41:01 - 09:11:01 -1897
Sisters 08:56:08 -44.2 Dark Up 35.4 202.0 Up 08:41:08 - 09:11:08 -1938
Redmond 08:56:06 -44.1 Dark Up 35.4 202.5 Up 08:41:06 - 09:11:06 -1953
Bend 08:56:07 -44.4 Dark Up 35.6 202.4 Up 08:41:07 - 09:11:07 -1964
Oregon Observatory 08:56:07 -44.6 Dark Up 35.8 202.3 Up 08:41:07 - 09:11:07 -1972
La Pine/Gilchrist 08:56:08 -44.8 Dark Up 36.0 202.3 Up 08:41:08 - 09:11:08 -1985
North Lake 08:56:06 -45.0 Dark Up 36.2 203.1 Up 08:41:06 - 09:11:06 -2036
Chiloquin 08:56:09 -45.9 Dark Up 37.1 202.2 Up 08:41:09 - 09:11:09 -2057
Klamath Falls 08:56:09 -46.2 Dark Up 37.4 202.4 Up 08:41:09 - 09:11:09 -2085
Paisley 08:56:05 -45.4 Dark Up 36.6 203.7 Up 08:41:05 - 09:11:05 -2089
Lakeview 08:56:05 -45.8 Dark Up 37.0 204.1 Up 08:41:05 - 09:11:05 -2134
Fall River/Burney 08:56:08 -47.2 Dark Up 38.4 203.2 Up 08:41:08 - 09:11:08 -2187
Cedarville 08:56:05 -46.4 Dark Up 37.6 204.5 Up 08:41:05 - 09:11:05 -2190
Susanville 08:56:06 -47.6 Dark Up 38.7 204.3 Up 08:41:06 - 09:11:06 -2260
Greenville 08:56:08 -47.9 Dark Up 39.1 204.0 Up 08:41:08 - 09:11:08 -2272
Gimple 08:56:06 -47.9 Dark Up 39.1 204.1 Up 08:41:06 - 09:11:06 -2275
Quincy 08:56:07 -48.1 Dark Up 39.3 204.1 Up 08:41:07 - 09:11:07 -2288
Portola 08:56:05 -48.1 Dark Up 39.2 204.7 Up 08:41:05 - 09:11:05 -2313
Reno 08:56:04 -48.1 Dark Up 39.3 205.6 Up 08:41:04 - 09:11:04 -2356
Carson City 08:56:03 -48.4 Dark Up 39.6 205.7 Up 08:41:03 - 09:11:03 -2386
Gardnerville 08:56:04 -48.6 Dark Up 39.8 205.9 Up 08:41:04 - 09:11:04 -2406
Yerington 08:56:02 -48.4 Dark Up 39.5 206.6 Up 08:41:02 - 09:11:02 -2422
Hawthorne 08:56:01 -48.6 Dark Up 39.8 207.4 Up 08:41:01 - 09:11:01 -2478
Lee Vining 08:56:02 -49.3 Dark Up 40.4 207.0 Up 08:41:02 - 09:11:02 -2507
Tonopah 08:55:56 -48.5 Dark Up 39.7 209.2 Up 08:40:56 - 09:10:56 -2564
Bishop 08:56:00 -49.6 Dark Up 40.7 208.1 Up 08:41:00 - 09:11:00 -2581
CPSLO 08:56:08 -52.2 Dark Up 43.4 206.2 Up 08:41:08 - 09:11:08 -2673
Beatty 08:55:55 -49.4 Dark Up 40.5 210.2 Up 08:40:55 - 09:10:55 -2676
Indian Springs 08:55:53 -49.2 Dark Up 40.3 211.6 Up 08:40:53 - 09:10:53 -2740
Dunrhomin 08:55:24 -41.3 Dark Up 32.5 221.3 Up 08:40:24 - 09:10:24 -2778
Henderson 08:55:50 -49.3 Dark Up 40.5 212.7 Up 08:40:50 - 09:10:50 -2810
Wildwood 08:56:02 -52.5 Dark Up 43.7 209.3 Up 08:41:02 - 09:11:02 -2848
Laughlin/Bullhead City 08:55:49 -49.9 Dark Up 41.0 213.6 Up 08:40:49 - 09:10:49 -2899
Patrick 08:55:47 -49.4 Dark Up 40.5 214.3 Up 08:40:47 - 09:10:47 -2902
Kingman/Dolan Springs 08:55:48 -49.6 Dark Up 40.8 214.2 Up 08:40:48 - 09:10:48 -2915
Mohave Valley 08:55:49 -50.1 Dark Up 41.3 213.7 Up 08:40:49 - 09:10:49 -2923
Idyllwild 08:55:56 -52.0 Dark Up 43.2 211.8 Up 08:40:56 - 09:10:56 -2946
Lake Havasu City 08:55:49 -50.3 Dark Up 41.5 214.2 Up 08:40:49 - 09:10:49 -2966
Parker 08:55:49 -50.6 Dark Up 41.8 214.4 Up 08:40:49 - 09:10:49 -2998
Blythe 08:55:50 -51.2 Dark Up 42.3 214.3 Up 08:40:50 - 09:10:50 -3033
Calipatria 08:55:53 -52.0 Dark Up 43.2 213.5 Up 08:40:53 - 09:10:53 -3043
Yuma 08:55:51 -51.9 Dark Up 43.1 214.8 Up 08:40:51 - 09:10:51 -3113
George/Scottsdale 08:55:41 -49.7 Dark Up 40.9 217.4 Up 08:40:41 - 09:10:41 -3122

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 2021/02/26 01:57:30 UT

Marc W. Buie, Southwest Research Institute

RECON