RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star GA0580:28886592 with event index number of 1298561

Geocentric closest approach at 2024/05/30 10:42:06 UTC

J2000 position of star is 18:02:01.2 -30:16:11
Equinox of date position of star is 18:03:34.2 -30:16:05
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 65 degrees from the moon. Moon is 53% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 15.4 AU from the Sun and 14.4 AU from the Earth.
Apparent velocity is 18.2 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 117 seconds.
The 1-sigma cross-track error in the shadow position is 582 km.
The sky-plane scale is 10475.2 km/arcsec.

The object has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 7.5 sec chord
Diameter=55.6 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2024/05/30 10:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.5 -26:29:02  0.9 20.70  86
34Ups Sco      17:32:25.6 -37:18:46  2.7  9.56  72
10Gam2Sgr      18:07:22.6 -30:25:17  3.0  0.83  64
PPM 297133     18:02:52.1 -30:09:46  8.5  0.19  65
PPM 297141     18:03:10.4 -30:20:53  9.0  0.12  65
469442         18:03:35.3 -30:16:05 16.6        65
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 24.9 km RECON observability=0.2 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)
Victoria 10:40:30 -12.1 AT Up 10.1 192.8 Really Low 10:30:16 - 10:50:45 5002
Kamloops 10:40:22 -9.2 NT Up 7.6 195.3 Really Low 10:30:07 - 10:50:36 5000
Peachland 10:40:19 -9.7 NT Up 8.4 195.9 Really Low 10:30:04 - 10:50:33 4967
Kelowna 10:40:17 -9.5 NT Up 8.2 196.1 Really Low 10:30:03 - 10:50:32 4964
Summerland 10:40:18 -9.8 NT Up 8.5 195.9 Really Low 10:30:03 - 10:50:32 4962
Penticton 10:40:17 -9.8 NT Up 8.5 196.0 Really Low 10:30:03 - 10:50:32 4958
Oliver 10:40:17 -10.1 NT Up 8.9 196.1 Really Low 10:30:03 - 10:50:32 4949
Anarchist Mountain Observatory 10:40:16 -10.1 NT Up 9.0 196.2 Really Low 10:30:02 - 10:50:31 4942
Okanogan 10:40:16 -10.7 NT Up 9.7 196.1 Really Low 10:30:02 - 10:50:31 4929
Manson/Chelan 10:40:18 -11.3 NT Up 10.2 195.6 Really Low 10:30:03 - 10:50:32 4927
Brewster 10:40:17 -11.0 NT Up 10.0 195.9 Really Low 10:30:02 - 10:50:31 4925
Wenatchee 10:40:18 -11.8 NT Up 10.7 195.5 Really Low 10:30:03 - 10:50:32 4917
Ellensburg 10:40:18 -12.2 AT Up 11.1 195.3 Really Low 10:30:04 - 10:50:33 4909
Yakima 10:40:18 -12.5 AT Up 11.5 195.3 Really Low 10:30:04 - 10:50:33 4898
Toppenish/White Swan 10:40:17 -12.6 AT Up 11.7 195.5 Really Low 10:30:03 - 10:50:32 4888
The Dalles 10:40:19 -13.6 AT Up 12.6 194.8 Really Low 10:30:05 - 10:50:34 4879
Maupin 10:40:19 -13.9 AT Up 13.0 195.0 Really Low 10:30:04 - 10:50:33 4864
PNWRO 10:40:11 -12.3 AT Up 11.8 196.8 Really Low 10:29:57 - 10:50:26 4847
Sisters 10:40:19 -14.8 AT Up 13.9 194.6 Really Low 10:30:05 - 10:50:34 4846
Bend 10:40:18 -14.9 AT Up 14.1 194.8 Really Low 10:30:04 - 10:50:33 4833
Oregon Observatory 10:40:18 -15.1 AT Up 14.3 194.7 Really Low 10:30:04 - 10:50:33 4830
Chiloquin 10:40:19 -16.3 AT Up 15.7 194.4 Really Low 10:30:05 - 10:50:34 4792
Klamath Falls 10:40:18 -16.5 AT Up 16.0 194.5 Really Low 10:30:04 - 10:50:33 4778
Sleaford 10:39:37 -2.1 CT Up 3.0 207.2 Really Low 10:29:22 - 10:49:51 4726
Fall River/Burney 10:40:16 -17.3 AT Up 17.1 195.0 Really Low 10:30:01 - 10:50:30 4725
Cedarville 10:40:11 -16.3 AT Up 16.3 196.0 Really Low 10:29:57 - 10:50:26 4718
Greenville 10:40:13 -17.8 AT Up 17.8 195.4 Really Low 10:29:58 - 10:50:27 4679
Gimple 10:40:13 -17.8 AT Up 17.8 195.5 Really Low 10:29:58 - 10:50:27 4677
Quincy 10:40:13 -18.0 AT Up 18.0 195.4 Really Low 10:29:58 - 10:50:27 4671
Portola 10:40:11 -17.8 AT Up 18.1 195.9 Really Low 10:29:57 - 10:50:26 4656
Reno 10:40:08 -17.7 AT Up 18.2 196.4 Really Low 10:29:54 - 10:50:23 4630
Carson City 10:40:07 -18.0 AT Up 18.5 196.5 Really Low 10:29:53 - 10:50:22 4615
Gardnerville 10:40:07 -18.2 Dark Up 18.7 196.6 Really Low 10:29:52 - 10:50:21 4603
Yerington 10:40:04 -17.8 AT Up 18.6 197.1 Really Low 10:29:50 - 10:50:19 4592
Hawthorne 10:40:02 -17.9 AT Up 18.9 197.6 Really Low 10:29:47 - 10:50:16 4559
Lee Vining 10:40:03 -18.6 Dark Up 19.5 197.2 Really Low 10:29:49 - 10:50:18 4546
Bishop 10:40:00 -18.7 Dark Up 19.9 197.9 Really Low 10:29:45 - 10:50:14 4501
Beatty 10:39:52 -18.2 Dark Up 20.0 199.4 Really Low 10:29:37 - 10:50:06 4439
Wildwood 10:39:58 -21.2 Dark Up 23.1 198.1 Low 10:29:44 - 10:50:13 4346
Laughlin/Bullhead City 10:39:41 -18.2 Dark Up 21.0 201.4 Low 10:29:27 - 10:49:56 4297
Patrick 10:39:38 -17.7 AT Up 20.6 202.0 Low 10:29:23 - 10:49:52 4290
Idyllwild 10:39:49 -20.5 Dark Up 22.9 199.8 Low 10:29:34 - 10:50:03 4280
Dunrhomin 10:39:10 -9.4 NT Up 13.3 208.5 Really Low 10:28:55 - 10:49:24 4274
Nikitin 10:39:09 -9.5 NT Up 13.5 208.5 Really Low 10:28:55 - 10:49:24 4266
CU-SBO 10:39:10 -9.6 NT Up 13.5 208.5 Really Low 10:28:55 - 10:49:24 4265
Lake Havasu City 10:39:39 -18.6 Dark Up 21.5 201.8 Low 10:29:25 - 10:49:54 4255
Calipatria 10:39:43 -20.2 Dark Up 23.2 200.9 Low 10:29:28 - 10:49:57 4215
Yuma 10:39:39 -20.0 Dark Up 23.3 201.8 Low 10:29:24 - 10:49:53 4167
George/Scottsdale 10:39:28 -17.7 AT Up 21.5 204.0 Low 10:29:13 - 10:49:42 4144

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, (2024/05/30 10:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.70  86
34Ups Sco      17:30:45.8 -37:17:46  2.7  9.56  72
10Gam2Sgr      18:05:48.4 -30:25:31  3.0  0.83  64
PPM 297133     18:01:18.1 -30:09:50  8.5  0.19  65
PPM 297141     18:01:36.2 -30:20:58  9.0  0.12  65
469442         18:02:01.2 -30:16:11 16.6        65
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:24:51 UT

Marc W. Buie, Southwest Research Institute

RECON