RECON: TNO occultation with 532037

Event between (532037) 13FY27 and star GA0820:04041715 with event index number of 2160244

Geocentric closest approach at 2023/04/08 04:09:11 UTC

J2000 position of star is 10:52:36.8 -06:24:35
Equinox of date position of star is 10:53:47.2 -06:32:01
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 56 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 79.5 AU from the Sun and 78.7 AU from the Earth.
Apparent velocity is 24.0 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 175 seconds.
The 1-sigma cross-track error in the shadow position is 3289 km.
The sky-plane scale is 57082.1 km/arcsec.

The object has an absolute magnitude Hv=3.1
Diameter=1406.1 km assuming a 5% albedo -- 59.7 sec chord
Diameter=574.0 km assuming a 30% albedo -- 24.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 532037, (2023/04/08 04:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:36.5 +11:51:09  1.3 21.42  72
Alphard        09:28:43.9 -08:45:38  2.0 21.19  75
PPM 193861     10:52:16.4 -03:13:00  5.8  3.34  57
PPM 193890     10:53:59.1 -06:56:50  7.5  0.42  55
PPM 193885     10:53:40.5 -06:35:30  9.5  0.06  56
532037         10:53:47.3 -06:32:02 15.1        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 5.1 sigma about the mid-time.
The median site spacing is 16.0 km RECON observability=0.9 and success probability=3.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:11:38 -20.2 Dark Up 30.9 168.4 Up 03:56:38 - 04:26:38 9269
Kamloops 04:12:08 -13.9 AT Down 29.2 152.1 Low 03:57:08 - 04:27:08 8621
Kelowna 04:12:08 -14.8 AT Down 30.2 152.8 Up 03:57:08 - 04:27:08 8598
Peachland 04:12:08 -14.6 AT Down 30.2 152.5 Up 03:57:08 - 04:27:08 8578
Summerland 04:12:08 -14.8 AT Down 30.3 152.5 Up 03:57:08 - 04:27:08 8571
Penticton 04:12:08 -14.9 AT Down 30.4 152.6 Up 03:57:08 - 04:27:08 8571
Dunrhomin 04:11:24 -28.4 Dark Up 42.6 167.4 Up 03:56:24 - 04:26:24 8547
Oliver 04:12:08 -15.1 AT Down 30.7 152.5 Up 03:57:08 - 04:27:08 8546
Anarchist Mountain Observatory 04:12:05 -15.2 AT Down 31.0 152.7 Up 03:57:05 - 04:27:05 8542
Nikitin 04:11:23 -28.5 Dark Up 42.7 167.3 Up 03:56:23 - 04:26:23 8533
CU-SBO 04:11:24 -28.5 Dark Up 42.8 167.2 Up 03:56:24 - 04:26:24 8524
Okanogan 04:12:08 -15.4 AT Down 31.5 152.3 Up 03:57:08 - 04:27:08 8486
Brewster 04:12:07 -15.5 AT Down 31.6 152.0 Up 03:57:07 - 04:27:07 8458
Manson/Chelan 04:12:10 -15.4 AT Down 31.7 151.5 Up 03:57:10 - 04:27:10 8428
Wenatchee 04:12:09 -15.5 AT Down 32.1 151.2 Up 03:57:09 - 04:27:09 8386
Ellensburg 04:12:09 -15.6 AT Down 32.4 150.8 Up 03:57:09 - 04:27:09 8346
Victoria 04:12:16 -13.2 AT Down 30.1 148.2 Up 03:57:16 - 04:27:16 8344
PNWRO 04:12:04 -17.0 AT Down 33.8 152.3 Up 03:57:04 - 04:27:04 8341
Yakima 04:12:08 -15.8 AT Down 32.7 150.7 Up 03:57:08 - 04:27:08 8315
Toppenish/White Swan 04:12:08 -16.0 AT Down 32.9 150.8 Up 03:57:08 - 04:27:08 8306
The Dalles 04:12:08 -15.8 AT Down 33.3 149.6 Up 03:57:08 - 04:27:08 8213
Maupin 04:12:12 -16.1 AT Down 33.8 149.6 Up 03:57:12 - 04:27:12 8186
Sisters 04:12:10 -16.2 AT Down 34.3 148.8 Up 03:57:10 - 04:27:10 8097
Bend 04:12:10 -16.5 AT Down 34.6 149.0 Up 03:57:10 - 04:27:10 8090
Oregon Observatory 04:12:10 -16.5 AT Down 34.7 148.8 Up 03:57:10 - 04:27:10 8070
Chiloquin 04:12:12 -16.8 AT Down 35.7 147.8 Up 03:57:12 - 04:27:12 7948
Cedarville 04:12:03 -18.4 Dark Down 37.2 149.3 Up 03:57:03 - 04:27:03 7942
Klamath Falls 04:12:09 -17.0 AT Down 36.0 147.8 Up 03:57:09 - 04:27:09 7925
Fall River/Burney 04:12:08 -17.8 AT Down 37.2 147.7 Up 03:57:08 - 04:27:08 7847
Reno 04:12:02 -19.6 Dark Down 39.1 148.9 Up 03:57:02 - 04:27:02 7799
Gimple 04:12:05 -18.6 Dark Down 38.1 148.0 Up 03:57:05 - 04:27:05 7798
Greenville 04:12:06 -18.5 Dark Down 38.1 147.9 Up 03:57:06 - 04:27:06 7794
Portola 04:12:05 -19.0 Dark Down 38.6 148.3 Up 03:57:05 - 04:27:05 7790
Yerington 04:12:01 -20.3 Dark Down 39.8 149.5 Up 03:57:01 - 04:27:01 7785
Quincy 04:12:06 -18.6 Dark Down 38.3 147.8 Up 03:57:06 - 04:27:06 7778
Hawthorne 04:11:59 -20.8 Dark Down 40.4 149.9 Up 03:56:59 - 04:26:59 7772
Carson City 04:12:03 -19.7 Dark Down 39.4 148.8 Up 03:57:03 - 04:27:03 7771
Patrick 04:11:42 -25.6 Dark Up 44.9 154.4 Up 03:56:42 - 04:26:42 7755
Gardnerville 04:12:03 -19.9 Dark Down 39.6 148.7 Up 03:57:03 - 04:27:03 7753
Beatty 04:11:52 -22.9 Dark Up 42.5 151.4 Up 03:56:52 - 04:26:52 7731
George/Scottsdale 04:11:35 -27.9 Dark Up 47.1 156.4 Up 03:56:35 - 04:26:35 7721
Lee Vining 04:11:59 -20.8 Dark Down 40.7 149.0 Up 03:56:59 - 04:26:59 7703
Laughlin/Bullhead City 04:11:45 -25.3 Dark Up 44.9 153.4 Up 03:56:45 - 04:26:45 7699
Bishop 04:11:56 -21.5 Dark Down 41.5 149.6 Up 03:56:56 - 04:26:56 7689
Lake Havasu City 04:11:44 -25.8 Dark Up 45.6 153.4 Up 03:56:44 - 04:26:44 7657
Yuma 04:11:42 -26.4 Dark Up 47.0 152.1 Up 03:56:42 - 04:26:42 7494
Calipatria 04:11:45 -25.6 Dark Up 46.3 151.2 Up 03:56:45 - 04:26:45 7483
Idyllwild 04:11:49 -24.4 Dark Up 45.3 150.0 Up 03:56:49 - 04:26:49 7474
Wildwood 04:11:54 -22.9 Dark Up 44.2 147.8 Up 03:56:54 - 04:26:54 7409

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 532037, (2023/04/08 04:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 21.42  72
Alphard        09:27:35.2 -08:39:30  2.0 21.19  75
PPM 193861     10:51:05.3 -03:05:34  5.8  3.34  57
PPM 193890     10:52:48.6 -06:49:23  7.5  0.42  55
PPM 193885     10:52:30.0 -06:28:04  9.5  0.06  56
532037         10:52:36.8 -06:24:35 15.1        56
Positions are for J2000

Event circumstances last updated at 2023/03/27 03:04:41 UT

Marc W. Buie, Southwest Research Institute

RECON