RECON: TNO occultation with 470308

Event between (470308) 07JH43 and star GA0620:11715998 with event index number of 2219546

Geocentric closest approach at 2024/06/06 08:06:43 UTC

J2000 position of star is 17:00:45.3 -26:48:51
Equinox of date position of star is 17:02:15.3 -26:50:53
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 177 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 40.5 AU from the Sun and 39.5 AU from the Earth.
Apparent velocity is 25.0 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 93 seconds.
The 1-sigma cross-track error in the shadow position is 1649 km.
The sky-plane scale is 28658.6 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=758.6 km assuming a 5% albedo -- 26.2 sec chord
Diameter=309.7 km assuming a 30% albedo -- 10.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470308, (2024/06/06 08:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.6 -26:29:03  0.9  7.02 176
23Tau Sco      16:37:24.5 -28:15:52  2.8  5.69 177
PPM 266416     17:08:24.2 -26:32:38  6.3  1.40 176
PPM 266283     17:02:55.2 -26:40:40  8.4  0.22 177
470308         17:02:16.4 -26:50:55 15.7       177
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 16.4 km RECON observability=0.6 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:06:12 -13.9 AT Down 9.9 194.2 Really Low 07:57:56 - 08:14:28 6838
Kamloops 08:06:50 -16.6 AT Down 12.5 181.3 Really Low 07:58:34 - 08:15:06 6829
Kelowna 08:06:48 -17.4 AT Down 13.3 182.1 Really Low 07:58:32 - 08:15:04 6810
Peachland 08:06:48 -17.5 AT Down 13.4 181.8 Really Low 07:58:32 - 08:15:04 6807
Summerland 08:06:49 -17.7 AT Down 13.6 181.9 Really Low 07:58:33 - 08:15:05 6803
Penticton 08:06:48 -17.7 AT Down 13.6 182.0 Really Low 07:58:32 - 08:15:04 6802
Oliver 08:06:48 -18.1 Dark Down 14.0 182.0 Really Low 07:58:32 - 08:15:04 6793
Anarchist Mountain Observatory 08:06:47 -18.2 Dark Down 14.1 182.2 Really Low 07:58:31 - 08:15:03 6789
Okanogan 08:06:48 -18.9 Dark Down 14.8 182.0 Really Low 07:58:32 - 08:15:04 6770
Victoria 08:06:59 -18.8 Dark Down 14.7 178.5 Really Low 07:58:43 - 08:15:15 6763
Brewster 08:06:48 -19.2 Dark Down 15.1 181.8 Really Low 07:58:32 - 08:15:04 6762
Manson/Chelan 08:06:49 -19.4 Dark Down 15.3 181.5 Really Low 07:58:33 - 08:15:05 6755
Wenatchee 08:06:50 -19.9 Dark Down 15.8 181.3 Really Low 07:58:34 - 08:15:06 6740
Ellensburg 08:06:51 -20.3 Dark Down 16.2 181.1 Really Low 07:58:35 - 08:15:07 6727
Yakima 08:06:50 -20.7 Dark Down 16.6 181.1 Really Low 07:58:34 - 08:15:06 6715
Toppenish/White Swan 08:06:50 -20.9 Dark Down 16.8 181.3 Really Low 07:58:34 - 08:15:06 6708
PNWRO 08:06:46 -21.2 Dark Down 17.1 182.7 Really Low 07:58:30 - 08:15:02 6700
The Dalles 08:06:53 -21.7 Dark Down 17.6 180.5 Really Low 07:58:37 - 08:15:09 6680
Maupin 08:06:52 -22.1 Dark Down 18.0 180.6 Really Low 07:58:36 - 08:15:08 6667
Sisters 08:06:54 -23.0 Dark Down 18.9 180.2 Really Low 07:58:38 - 08:15:10 6635
Bend 08:06:53 -23.2 Dark Down 19.1 180.4 Really Low 07:58:37 - 08:15:09 6627
Oregon Observatory 08:06:53 -23.4 Dark Down 19.3 180.3 Really Low 07:58:37 - 08:15:09 6621
Chiloquin 08:06:54 -24.7 Dark Down 20.6 179.9 Low 07:58:38 - 08:15:10 6569
Klamath Falls 08:06:54 -25.1 Dark Down 21.0 180.0 Low 07:58:38 - 08:15:10 6556
Cedarville 08:06:49 -25.7 Dark Down 21.6 181.5 Low 07:58:33 - 08:15:05 6533
Fall River/Burney 08:06:53 -26.2 Dark Down 22.1 180.4 Low 07:58:37 - 08:15:09 6509
Gimple 08:06:51 -27.1 Dark Down 23.0 180.9 Low 07:58:35 - 08:15:07 6472
Greenville 08:06:51 -27.1 Dark Down 23.0 180.8 Low 07:58:35 - 08:15:07 6472
Quincy 08:06:51 -27.3 Dark Down 23.2 180.8 Low 07:58:35 - 08:15:07 6463
Portola 08:06:49 -27.5 Dark Down 23.4 181.2 Low 07:58:33 - 08:15:05 6460
Reno 08:06:47 -27.7 Dark Down 23.6 181.9 Low 07:58:31 - 08:15:03 6450
Dunrhomin 08:05:59 -25.2 Dark Down 21.2 195.7 Low 07:57:43 - 08:14:15 6446
Nikitin 08:05:59 -25.3 Dark Down 21.4 195.7 Low 07:57:43 - 08:14:15 6438
CU-SBO 08:05:59 -25.4 Dark Down 21.5 195.6 Low 07:57:43 - 08:14:15 6436
Carson City 08:06:47 -28.1 Dark Down 24.0 181.9 Low 07:58:31 - 08:15:03 6434
Yerington 08:06:45 -28.2 Dark Down 24.2 182.5 Low 07:58:29 - 08:15:01 6426
Gardnerville 08:06:47 -28.3 Dark Down 24.2 181.9 Low 07:58:31 - 08:15:03 6423
Hawthorne 08:06:43 -28.7 Dark Down 24.6 183.0 Low 07:58:27 - 08:14:59 6406
Lee Vining 08:06:45 -29.3 Dark Down 25.2 182.6 Low 07:58:29 - 08:15:01 6379
Bishop 08:06:42 -29.8 Dark Down 25.7 183.3 Low 07:58:26 - 08:14:58 6351
Beatty 08:06:37 -30.2 Dark Down 26.1 184.9 Low 07:58:21 - 08:14:53 6330
Patrick 08:06:26 -31.4 Dark Down 27.3 187.8 Low 07:58:10 - 08:14:42 6254
Laughlin/Bullhead City 08:06:28 -31.7 Dark Down 27.7 187.1 Low 07:58:12 - 08:14:44 6242
Lake Havasu City 08:06:27 -32.3 Dark Down 28.3 187.4 Low 07:58:11 - 08:14:43 6206
Wildwood 08:06:42 -33.1 Dark Down 29.0 183.2 Low 07:58:26 - 08:14:58 6184
Idyllwild 08:06:35 -33.3 Dark Down 29.3 185.1 Low 07:58:19 - 08:14:51 6167
George/Scottsdale 08:06:18 -32.8 Dark Down 28.8 189.9 Low 07:58:02 - 08:14:34 6159
Calipatria 08:06:31 -33.8 Dark Down 29.8 186.3 Low 07:58:15 - 08:14:47 6133
Yuma 08:06:27 -34.2 Dark Down 30.1 187.3 Up 07:58:11 - 08:14:43 6108

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 470308, (2024/06/06 08:07UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.02 176
23Tau Sco      16:35:52.9 -28:12:58  2.8  5.69 177
PPM 266416     17:06:53.2 -26:30:47  6.3  1.40 176
PPM 266283     17:01:24.2 -26:38:38  8.4  0.22 177
470308         17:00:45.3 -26:48:51 15.7       177
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:25:55 UT

Marc W. Buie, Southwest Research Institute

RECON