RECON: TNO occultation with 523601

Event between (523601) 03UY413 and star GA1200:00307512 with event index number of 2626839

Geocentric closest approach at 2024/01/15 04:10:43 UTC

J2000 position of star is 01:51:39.1 +30:25:50
Equinox of date position of star is 01:53:01.7 +30:32:54
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon. Moon is 18% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 42.7 AU from the Sun and 42.5 AU from the Earth.
Apparent velocity is 8.3 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 200 seconds.
The 1-sigma cross-track error in the shadow position is 1769 km.
The sky-plane scale is 30808.5 km/arcsec.

The object has an absolute magnitude Hv=5.4
Diameter=483.1 km assuming a 5% albedo -- 60.5 sec chord
Diameter=197.2 km assuming a 30% albedo -- 24.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523601, (2024/01/15 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.2 +16:33:21  0.8 39.90  84
Hamal          02:08:32.0 +23:34:30  2.0  7.78  54
2Alp Tri       01:54:27.6 +29:41:42  3.4  0.91  55
PPM 066663     01:51:46.8 +30:55:18  8.4  0.46  55
PPM 066667     01:51:58.7 +30:35:26  8.9  0.23  55
PPM 066678     01:52:27.6 +30:25:26 11.0  0.18  55
523601         01:53:01.9 +30:32:55 16.7        55
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 4.5 sigma about the mid-time.
The median site spacing is 10.7 km RECON observability=1.0 and success probability=43.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Nikitin 04:08:07 -47.2 Dark Down 53.9 268.3 Up 03:53:07 - 04:23:07 272
CU-SBO 04:08:08 -47.2 Dark Down 54.0 268.3 Up 03:53:08 - 04:23:08 269
Dunrhomin 04:08:05 -47.2 Dark Down 53.9 268.0 Up 03:53:05 - 04:23:05 266
George/Scottsdale 04:09:45 -43.0 Dark Up 58.8 274.2 Up 03:54:45 - 04:24:45 14
Yuma 04:10:06 -40.7 Dark Up 61.0 274.8 Up 03:55:06 - 04:25:06 -176
Lake Havasu City 04:09:41 -40.9 Dark Up 60.9 271.7 Up 03:54:41 - 04:24:41 -198
Calipatria 04:10:02 -40.0 Dark Up 61.8 273.6 Up 03:55:02 - 04:25:02 -258
Patrick 04:09:02 -41.1 Dark Up 60.7 270.2 Up 03:54:02 - 04:24:02 -292
Sleaford 04:05:45 -42.7 Dark Down 52.7 251.1 Up 03:50:45 - 04:20:45 -311
Laughlin/Bullhead City 04:09:02 -40.5 Dark Up 61.3 270.2 Up 03:54:02 - 04:24:02 -354
Idyllwild 04:09:57 -39.0 Dark Up 62.8 271.9 Up 03:54:57 - 04:24:57 -368
Beatty 04:09:02 -38.7 Dark Up 63.0 265.5 Up 03:54:02 - 04:24:02 -467
Wildwood 04:09:57 -37.4 Dark Up 64.4 270.2 Up 03:54:57 - 04:24:57 -530
Bishop 04:09:02 -37.4 Dark Up 64.2 263.4 Up 03:54:02 - 04:24:02 -599
Hawthorne 04:08:59 -37.2 Dark Up 64.2 260.8 Up 03:53:59 - 04:23:59 -639
Lee Vining 04:09:02 -36.8 Dark Up 64.7 261.5 Up 03:54:02 - 04:24:02 -664
Yerington 04:08:54 -36.8 Dark Up 64.6 259.3 Up 03:53:54 - 04:23:54 -692
Gardnerville 04:08:55 -36.3 Dark Up 65.0 258.9 Up 03:53:55 - 04:23:55 -736
Carson City 04:08:52 -36.3 Dark Up 65.0 258.3 Up 03:53:52 - 04:23:52 -746
Reno 04:08:48 -36.2 Dark Up 65.0 257.5 Up 03:53:48 - 04:23:48 -756
Portola 04:08:46 -35.7 Dark Up 65.4 256.3 Up 03:53:46 - 04:23:46 -813
Cedarville 04:08:23 -35.8 Dark Up 64.8 252.9 Up 03:53:23 - 04:23:23 -834
Gimple 04:08:43 -35.4 Dark Up 65.7 255.1 Up 03:53:43 - 04:23:43 -852
Quincy 04:08:45 -35.3 Dark Up 65.8 255.5 Up 03:53:45 - 04:23:45 -853
Greenville 04:08:43 -35.3 Dark Up 65.7 255.0 Up 03:53:43 - 04:23:43 -859
PNWRO 04:07:24 -36.2 Dark Up 62.5 245.7 Up 03:52:24 - 04:22:24 -866
Fall River/Burney 04:08:32 -34.9 Dark Up 65.8 252.6 Up 03:53:32 - 04:23:32 -915
Klamath Falls 04:08:17 -34.6 Dark Up 65.8 249.5 Up 03:53:17 - 04:23:17 -973
Toppenish/White Swan 04:07:21 -35.1 Dark Up 63.3 243.1 Up 03:52:21 - 04:22:21 -982
Bend 04:07:52 -34.8 Dark Up 64.8 246.3 Up 03:52:52 - 04:22:52 -984
Okanogan 04:06:55 -35.4 Dark Up 62.0 240.6 Up 03:51:55 - 04:21:55 -985
Chiloquin 04:08:12 -34.5 Dark Up 65.7 248.7 Up 03:53:12 - 04:23:12 -987
Oregon Observatory 04:07:55 -34.7 Dark Up 65.0 246.5 Up 03:52:55 - 04:22:55 -989
Anarchist Mountain Observatory 04:06:47 -35.4 Dark Up 61.5 239.8 Up 03:51:47 - 04:21:47 -990
Brewster 04:07:00 -35.3 Dark Up 62.2 240.8 Up 03:52:00 - 04:22:00 -990
Maupin 04:07:38 -34.8 Dark Up 64.2 244.4 Up 03:52:38 - 04:22:38 -997
Yakima 04:07:19 -35.0 Dark Up 63.3 242.4 Up 03:52:19 - 04:22:19 -999
Wenatchee 04:07:08 -35.0 Dark Up 62.8 241.3 Up 03:52:08 - 04:22:08 -1007
Oliver 04:06:45 -35.3 Dark Up 61.6 239.3 Up 03:51:45 - 04:21:45 -1008
Manson/Chelan 04:07:02 -35.1 Dark Up 62.5 240.7 Up 03:52:02 - 04:22:02 -1009
Sisters 04:07:50 -34.5 Dark Up 64.9 245.5 Up 03:52:50 - 04:22:50 -1009
Ellensburg 04:07:13 -34.9 Dark Up 63.2 241.7 Up 03:52:13 - 04:22:13 -1010
The Dalles 04:07:33 -34.7 Dark Up 64.1 243.5 Up 03:52:33 - 04:22:33 -1016
Penticton 04:06:41 -35.2 Dark Up 61.4 238.7 Up 03:51:41 - 04:21:41 -1019
Kelowna 04:06:37 -35.2 Dark Up 61.2 238.3 Up 03:51:37 - 04:21:37 -1023
Summerland 04:06:40 -35.1 Dark Up 61.4 238.4 Up 03:51:40 - 04:21:40 -1028
Peachland 04:06:38 -35.0 Dark Up 61.4 238.1 Up 03:51:38 - 04:21:38 -1039
Kamloops 04:06:28 -34.5 Dark Up 61.2 235.7 Up 03:51:28 - 04:21:28 -1106
Victoria 04:06:59 -32.8 Dark Up 64.0 234.8 Up 03:51:59 - 04:21:59 -1248

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 523601, (2024/01/15 04:08UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 39.90  84
Hamal          02:07:10.7 +23:27:41  2.0  7.78  54
2Alp Tri       01:53:04.9 +29:34:39  3.4  0.91  55
PPM 066663     01:50:23.9 +30:48:12  8.4  0.46  55
PPM 066667     01:50:35.9 +30:28:20  8.9  0.23  55
PPM 066678     01:51:04.9 +30:18:21 11.0  0.18  55
523601         01:51:39.1 +30:25:50 16.7        55
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:45:29 UT

Marc W. Buie, Southwest Research Institute

RECON