RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star GA0580:29765641 with event index number of 1298449

Geocentric closest approach at 2024/05/16 10:26:30 UTC

J2000 position of star is 18:04:27.4 -30:11:30
Equinox of date position of star is 18:06:00.3 -30:11:19
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 59% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 15.4 AU from the Sun and 14.6 AU from the Earth.
Apparent velocity is 14.9 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 142 seconds.
The 1-sigma cross-track error in the shadow position is 782 km.
The sky-plane scale is 10569.9 km/arcsec.

The object has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 9.2 sec chord
Diameter=55.6 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2024/05/16 10:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.4 -26:29:02  0.9 21.21  94
Kap Sco        17:44:10.6 -39:02:24  2.4  9.92 110
10Gam2Sgr      18:07:22.5 -30:25:17  3.0  0.37 115
PPM 267763     18:05:10.0 -29:51:32  7.6  0.38 115
PPM 297210     18:06:34.6 -30:13:26  8.8  0.13 115
469442         18:06:01.3 -30:11:18 15.2       115
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 21.2 km RECON observability=0.3 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)
Kamloops 10:25:15 -12.9 AT Down 9.1 179.5 Really Low 10:12:55 - 10:37:34 8107
Victoria 10:25:30 -15.8 AT Down 11.2 176.9 Really Low 10:13:11 - 10:37:50 8103
Peachland 10:25:12 -13.4 AT Down 10.1 180.0 Really Low 10:12:53 - 10:37:32 8082
Kelowna 10:25:11 -13.2 AT Down 9.9 180.3 Really Low 10:12:51 - 10:37:30 8080
Summerland 10:25:13 -13.5 AT Down 10.2 180.1 Really Low 10:12:53 - 10:37:32 8078
Penticton 10:25:11 -13.5 AT Down 10.3 180.2 Really Low 10:12:52 - 10:37:31 8075
Oliver 10:25:11 -13.8 AT Down 10.6 180.2 Really Low 10:12:52 - 10:37:31 8068
Anarchist Mountain Observatory 10:25:11 -13.9 AT Down 10.8 180.4 Really Low 10:12:52 - 10:37:31 8063
Okanogan 10:25:12 -14.5 AT Down 11.4 180.2 Really Low 10:12:53 - 10:37:32 8051
Manson/Chelan 10:25:15 -15.1 AT Down 11.9 179.7 Really Low 10:12:56 - 10:37:35 8049
Brewster 10:25:14 -14.8 AT Down 11.7 180.0 Really Low 10:12:54 - 10:37:33 8048
Wenatchee 10:25:16 -15.5 AT Down 12.4 179.6 Really Low 10:12:57 - 10:37:36 8040
Ellensburg 10:25:18 -16.0 AT Down 12.8 179.4 Really Low 10:12:58 - 10:37:37 8034
Yakima 10:25:17 -16.3 AT Down 13.2 179.4 Really Low 10:12:58 - 10:37:37 8024
Toppenish/White Swan 10:25:17 -16.4 AT Down 13.4 179.5 Really Low 10:12:58 - 10:37:37 8016
The Dalles 10:25:22 -17.4 AT Down 14.2 178.8 Really Low 10:13:02 - 10:37:41 8007
Maupin 10:25:21 -17.7 AT Down 14.6 178.9 Really Low 10:13:01 - 10:37:40 7994
PNWRO 10:25:10 -16.1 AT Down 13.8 180.8 Really Low 10:12:51 - 10:37:30 7985
Sisters 10:25:24 -18.6 Dark Down 15.5 178.5 Really Low 10:13:05 - 10:37:44 7977
Bend 10:25:22 -18.7 Dark Down 15.7 178.7 Really Low 10:13:03 - 10:37:42 7967
Oregon Observatory 10:25:24 -18.8 Dark Down 15.9 178.6 Really Low 10:13:04 - 10:37:43 7964
Chiloquin 10:25:26 -20.1 Dark Down 17.2 178.2 Really Low 10:13:06 - 10:37:45 7929
Klamath Falls 10:25:26 -20.3 Dark Down 17.6 178.3 Really Low 10:13:06 - 10:37:45 7917
Sleaford 10:24:13 -6.0 CT Down 6.9 191.9 Really Low 10:11:53 - 10:36:32 7893
Fall River/Burney 10:25:24 -21.1 Dark Down 18.7 178.6 Really Low 10:13:05 - 10:37:44 7872
Cedarville 10:25:18 -20.2 Dark Down 18.3 179.7 Really Low 10:12:59 - 10:37:38 7870
Greenville 10:25:22 -21.7 Dark Down 19.7 179.0 Really Low 10:13:02 - 10:37:41 7833
Gimple 10:25:22 -21.6 Dark Down 19.7 179.1 Really Low 10:13:02 - 10:37:41 7832
Quincy 10:25:23 -21.8 Dark Down 19.9 179.0 Really Low 10:13:04 - 10:37:43 7825
Portola 10:25:21 -21.7 Dark Down 20.0 179.4 Really Low 10:13:02 - 10:37:41 7814
Reno 10:25:17 -21.6 Dark Down 20.3 180.0 Low 10:12:58 - 10:37:37 7794
Carson City 10:25:17 -21.9 Dark Down 20.6 180.0 Low 10:12:58 - 10:37:37 7780
Gardnerville 10:25:17 -22.0 Dark Down 20.9 180.1 Low 10:12:58 - 10:37:37 7770
Yerington 10:25:14 -21.7 Dark Down 20.8 180.6 Low 10:12:54 - 10:37:33 7762
Hawthorne 10:25:12 -21.8 Dark Down 21.3 181.1 Low 10:12:52 - 10:37:31 7735
Lee Vining 10:25:14 -22.5 Dark Down 21.8 180.7 Low 10:12:55 - 10:37:34 7721
Bishop 10:25:11 -22.6 Dark Down 22.4 181.3 Low 10:12:51 - 10:37:30 7683
Beatty 10:25:02 -22.1 Dark Down 22.8 182.8 Low 10:12:43 - 10:37:22 7634
Wildwood 10:25:13 -25.2 Dark Down 25.7 181.2 Low 10:12:53 - 10:37:32 7540
Dunrhomin 10:24:00 -13.5 AT Down 18.3 193.0 Really Low 10:11:40 - 10:36:19 7517
Laughlin/Bullhead City 10:24:50 -22.2 Dark Down 24.5 184.9 Low 10:12:30 - 10:37:09 7513
Nikitin 10:23:59 -13.6 AT Down 18.5 193.0 Really Low 10:11:40 - 10:36:19 7510
CU-SBO 10:24:00 -13.7 AT Down 18.6 193.0 Really Low 10:11:40 - 10:36:19 7510
Patrick 10:24:47 -21.7 Dark Down 24.2 185.5 Low 10:12:27 - 10:37:06 7510
Idyllwild 10:25:02 -24.5 Dark Down 26.0 182.9 Low 10:12:43 - 10:37:22 7489
Lake Havasu City 10:24:49 -22.6 Dark Down 25.1 185.2 Low 10:12:29 - 10:37:08 7476
Calipatria 10:24:56 -24.3 Dark Down 26.6 184.1 Low 10:12:37 - 10:37:16 7434
Yuma 10:24:51 -24.1 Dark Down 26.9 184.9 Low 10:12:31 - 10:37:10 7393
George/Scottsdale 10:24:35 -21.7 Dark Down 25.7 187.5 Low 10:12:15 - 10:36:54 7384

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 469442, (2024/05/16 10:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.21  94
Kap Sco        17:42:29.3 -39:01:49  2.4  9.92 110
10Gam2Sgr      18:05:48.4 -30:25:31  3.0  0.37 115
PPM 267763     18:03:36.3 -29:51:42  7.6  0.38 115
PPM 297210     18:05:00.7 -30:13:38  8.8  0.13 115
469442         18:04:27.4 -30:11:30 15.2       115
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:22:41 UT

Marc W. Buie, Southwest Research Institute

RECON