RECON: TNO occultation with 523620

Event between (523620) 07RH283 and star GA1220:01662731 with event index number of 2387219

Geocentric closest approach at 2024/11/13 05:54:13 UTC

J2000 position of star is 05:20:45.4 +33:20:27
Equinox of date position of star is 05:22:21.8 +33:21:49
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 68 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 21.3 AU from the Sun and 20.5 AU from the Earth.
Apparent velocity is 21.1 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 116 seconds.
The 1-sigma cross-track error in the shadow position is 990 km.
The sky-plane scale is 14855.7 km/arcsec.

The object has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.5 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523620, (2024/11/13 05:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.0 +16:33:27  0.8 19.63  56
Alnath         05:27:52.0 +28:37:34  1.6  4.88  68
PPM 070185     05:20:38.5 +33:46:21  5.4  0.55  67
PPM 070167     05:20:09.0 +33:11:20  8.1  0.50  67
PPM 070239     05:22:59.2 +33:24:16  9.6  0.13  68
523620         05:22:23.4 +33:21:50 13.9        68
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 30.7 km RECON observability=1.0 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 05:56:55 -50.9 Dark Up 44.6 89.2 Up 05:46:46 - 06:07:04 4920
Victoria 05:57:07 -51.0 Dark Up 42.5 84.9 Up 05:46:58 - 06:07:16 4850
Peachland 05:56:58 -51.8 Dark Up 45.0 88.7 Up 05:46:49 - 06:07:07 4823
Kelowna 05:56:56 -51.9 Dark Up 45.1 89.0 Up 05:46:47 - 06:07:05 4822
Summerland 05:56:58 -52.0 Dark Up 45.0 88.6 Up 05:46:49 - 06:07:07 4807
Penticton 05:56:57 -52.1 Dark Up 45.1 88.6 Up 05:46:48 - 06:07:06 4798
Oliver 05:56:59 -52.3 Dark Up 45.1 88.3 Up 05:46:50 - 06:07:08 4768
Anarchist Mountain Observatory 05:56:59 -52.6 Dark Up 45.2 88.3 Up 05:46:50 - 06:07:08 4747
Okanogan 05:57:02 -52.9 Dark Up 45.0 87.5 Up 05:46:53 - 06:07:11 4700
Brewster 05:57:03 -53.0 Dark Up 44.9 87.1 Up 05:46:54 - 06:07:12 4684
Manson/Chelan 05:57:04 -53.0 Dark Up 44.6 86.6 Up 05:46:55 - 06:07:13 4680
Wenatchee 05:57:06 -53.2 Dark Up 44.5 86.0 Up 05:46:57 - 06:07:15 4645
Ellensburg 05:57:08 -53.4 Dark Up 44.3 85.5 Up 05:46:59 - 06:07:17 4618
Sleaford 05:56:21 -54.5 Dark Up 53.3 103.1 Up 05:46:12 - 06:06:30 4598
Yakima 05:57:09 -53.7 Dark Up 44.3 85.1 Up 05:47:00 - 06:07:18 4584
Toppenish/White Swan 05:57:10 -53.9 Dark Up 44.4 85.0 Up 05:47:01 - 06:07:19 4559
The Dalles 05:57:14 -54.0 Dark Up 43.8 83.7 Up 05:47:05 - 06:07:23 4522
Maupin 05:57:15 -54.4 Dark Up 43.8 83.4 Up 05:47:06 - 06:07:24 4482
PNWRO 05:57:08 -54.9 Dark Up 45.4 85.6 Up 05:46:59 - 06:07:17 4472
Sisters 05:57:19 -54.7 Dark Up 43.4 82.2 Up 05:47:10 - 06:07:28 4425
Bend 05:57:19 -55.0 Dark Up 43.5 82.2 Up 05:47:10 - 06:07:28 4394
Oregon Observatory 05:57:20 -55.0 Dark Up 43.4 81.9 Up 05:47:11 - 06:07:29 4384
Chiloquin 05:57:25 -55.6 Dark Up 42.9 80.5 Up 05:47:16 - 06:07:34 4285
Klamath Falls 05:57:26 -55.8 Dark Up 42.9 80.2 Up 05:47:17 - 06:07:35 4252
Fall River/Burney 05:57:29 -56.8 Dark Up 43.0 79.4 Up 05:47:20 - 06:07:38 4132
Cedarville 05:57:25 -57.2 Dark Up 44.0 80.5 Up 05:47:16 - 06:07:34 4126
Greenville 05:57:30 -57.6 Dark Up 43.2 78.8 Up 05:47:21 - 06:07:39 4032
Gimple 05:57:31 -57.6 Dark Up 43.2 78.8 Up 05:47:22 - 06:07:40 4029
Quincy 05:57:31 -57.7 Dark Up 43.1 78.6 Up 05:47:22 - 06:07:40 4014
Portola 05:57:30 -58.0 Dark Up 43.5 78.7 Up 05:47:21 - 06:07:39 3983
Reno 05:57:30 -58.6 Dark Up 43.9 78.8 Up 05:47:21 - 06:07:39 3932
Carson City 05:57:31 -58.8 Dark Up 43.8 78.4 Up 05:47:22 - 06:07:40 3898
Gardnerville 05:57:32 -59.0 Dark Up 43.8 78.2 Up 05:47:23 - 06:07:41 3874
Yerington 05:57:30 -59.3 Dark Up 44.3 78.6 Up 05:47:21 - 06:07:39 3855
Hawthorne 05:57:30 -60.0 Dark Up 44.6 78.4 Up 05:47:21 - 06:07:39 3790
Lee Vining 05:57:33 -60.0 Dark Up 44.1 77.6 Up 05:47:24 - 06:07:42 3758
Bishop 05:57:33 -60.8 Dark Up 44.5 77.4 Up 05:47:24 - 06:07:42 3672
Beatty 05:57:31 -62.1 Dark Up 45.7 77.6 Up 05:47:22 - 06:07:40 3562
Dunrhomin 05:56:51 -65.5 Dark Up 55.0 87.3 Up 05:46:42 - 06:07:00 3453
Nikitin 05:56:52 -65.7 Dark Up 55.0 87.1 Up 05:46:43 - 06:07:01 3436
CU-SBO 05:56:52 -65.7 Dark Up 54.9 86.9 Up 05:46:43 - 06:07:01 3432
Wildwood 05:57:42 -62.4 Dark Up 43.6 74.2 Up 05:47:33 - 06:07:51 3374
Laughlin/Bullhead City 05:57:29 -64.6 Dark Up 47.0 76.7 Up 05:47:20 - 06:07:38 3307
Patrick 05:57:27 -64.9 Dark Up 47.7 77.2 Up 05:47:18 - 06:07:36 3302
Idyllwild 05:57:38 -63.9 Dark Up 45.0 74.5 Up 05:47:29 - 06:07:47 3259
Lake Havasu City 05:57:31 -65.1 Dark Up 47.1 76.1 Up 05:47:22 - 06:07:40 3232
Calipatria 05:57:37 -65.1 Dark Up 45.8 74.3 Up 05:47:28 - 06:07:46 3150
Yuma 05:57:36 -65.9 Dark Up 46.4 74.2 Up 05:47:27 - 06:07:45 3070
George/Scottsdale 05:57:25 -67.2 Dark Up 48.9 76.1 Up 05:47:16 - 06:07:34 3056

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 523620, (2024/11/13 05:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.63  56
Alnath         05:26:17.6 +28:36:23  1.6  4.88  68
PPM 070185     05:19:00.2 +33:44:54  5.4  0.55  67
PPM 070167     05:18:31.1 +33:09:52  8.1  0.50  67
PPM 070239     05:21:21.1 +33:22:54  9.6  0.13  68
523620         05:20:45.4 +33:20:27 13.9        68
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:51:47 UT

Marc W. Buie, Southwest Research Institute

RECON