RECON: TNO occultation with 145453

Event between (145453) 05RR43 and star GA1080:00918923 with event index number of 2469449

Geocentric closest approach at 2027/11/26 13:54:01 UTC

J2000 position of star is 05:17:08.7 +19:32:53
Equinox of date position of star is 05:18:34.8 +19:34:22
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 40.8 AU from the Sun and 39.8 AU from the Earth.
Apparent velocity is 24.9 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 72 seconds.
The 1-sigma cross-track error in the shadow position is 1610 km.
The sky-plane scale is 28890.8 km/arcsec.

The object has an absolute magnitude Hv=4.1
Diameter=883.1 km assuming a 5% albedo -- 35.9 sec chord
Diameter=360.5 km assuming a 30% albedo -- 14.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 145453, (2027/11/26 13:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.5 +16:33:48  0.8 10.26 153
Alnath         05:28:03.5 +28:37:43  1.6  9.30 143
PPM 120839     05:21:57.1 +19:36:15  6.5  0.74 143
PPM 120767     05:17:22.7 +19:45:33  8.3  0.38 144
PPM 120783     05:18:26.1 +19:19:51  8.9  0.26 144
145453         05:18:47.5 +19:34:35 15.9       144
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 0.0 km RECON observability=0.1 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)
Sleaford 13:51:22 -7.6 NT Up 16.6 280.7 Really Low 13:44:51 - 13:57:54 10963
Kamloops 13:51:23 -15.6 AT Down 25.4 270.3 Low 13:44:52 - 13:57:55 10532
Kelowna 13:51:20 -14.9 AT Down 24.8 271.3 Low 13:44:49 - 13:57:52 10491
Peachland 13:51:20 -15.1 AT Down 25.0 271.2 Low 13:44:49 - 13:57:52 10476
Summerland 13:51:21 -15.0 AT Down 24.9 271.3 Low 13:44:49 - 13:57:52 10467
Penticton 13:51:19 -14.9 AT Down 24.9 271.4 Low 13:44:47 - 13:57:50 10465
Oliver 13:51:18 -14.8 AT Down 24.9 271.6 Low 13:44:46 - 13:57:49 10438
Anarchist Mountain Observatory 13:51:18 -14.6 AT Down 24.7 271.8 Low 13:44:47 - 13:57:50 10429
Okanogan 13:51:16 -14.6 AT Down 24.9 271.9 Low 13:44:44 - 13:57:47 10374
Brewster 13:51:15 -14.7 AT Down 25.0 271.9 Low 13:44:43 - 13:57:46 10348
Manson/Chelan 13:51:14 -14.8 AT Down 25.2 271.7 Low 13:44:43 - 13:57:46 10323
Victoria 13:51:20 -17.1 AT Down 27.4 269.0 Low 13:44:48 - 13:57:51 10296
Wenatchee 13:51:13 -14.8 AT Down 25.3 271.8 Low 13:44:41 - 13:57:44 10281
Ellensburg 13:51:12 -14.9 AT Down 25.5 271.9 Low 13:44:40 - 13:57:43 10243
Yakima 13:51:11 -14.8 AT Down 25.5 272.0 Low 13:44:39 - 13:57:42 10210
PNWRO 13:51:07 -13.5 AT Down 24.3 273.5 Low 13:44:36 - 13:57:39 10204
Toppenish/White Swan 13:51:10 -14.6 AT Down 25.4 272.3 Low 13:44:39 - 13:57:42 10197
The Dalles 13:51:08 -14.9 AT Down 25.9 272.1 Low 13:44:37 - 13:57:40 10114
Dunrhomin 13:50:44 -2.2 CT Up 13.6 284.3 Really Low 13:44:12 - 13:57:15 10109
Nikitin 13:50:43 -2.1 CT Up 13.6 284.3 Really Low 13:44:12 - 13:57:15 10094
CU-SBO 13:50:43 -2.1 CT Up 13.6 284.3 Really Low 13:44:11 - 13:57:14 10086
Maupin 13:51:08 -14.8 AT Down 25.8 272.3 Low 13:44:37 - 13:57:40 10082
Sisters 13:51:05 -14.9 AT Down 26.1 272.4 Low 13:44:33 - 13:57:36 9997
Bend 13:51:04 -14.7 AT Down 25.9 272.7 Low 13:44:32 - 13:57:35 9984
Oregon Observatory 13:51:04 -14.7 AT Down 26.0 272.7 Low 13:44:32 - 13:57:35 9966
Chiloquin 13:51:00 -14.7 AT Down 26.3 273.1 Low 13:44:29 - 13:57:32 9844
Klamath Falls 13:50:59 -14.5 AT Down 26.2 273.3 Low 13:44:27 - 13:57:30 9817
Cedarville 13:50:55 -13.2 AT Up 24.9 274.6 Low 13:44:24 - 13:57:27 9800
Fall River/Burney 13:50:55 -13.9 AT Up 25.8 274.1 Low 13:44:24 - 13:57:27 9725
Gimple 13:50:53 -13.3 AT Up 25.4 274.9 Low 13:44:21 - 13:57:24 9660
Greenville 13:50:52 -13.4 AT Up 25.4 274.8 Low 13:44:21 - 13:57:24 9658
Portola 13:50:51 -12.9 AT Up 25.0 275.2 Low 13:44:19 - 13:57:22 9643
Quincy 13:50:52 -13.3 AT Up 25.4 274.9 Low 13:44:21 - 13:57:24 9640
Reno 13:50:50 -12.4 AT Up 24.5 275.8 Low 13:44:18 - 13:57:21 9637
Yerington 13:50:47 -11.7 NT Up 24.0 276.4 Low 13:44:16 - 13:57:19 9606
Carson City 13:50:49 -12.2 AT Up 24.5 275.9 Low 13:44:17 - 13:57:20 9606
Gardnerville 13:50:48 -12.1 AT Up 24.4 276.1 Low 13:44:16 - 13:57:19 9586
Hawthorne 13:50:46 -11.2 NT Up 23.5 276.9 Low 13:44:14 - 13:57:17 9580
Lee Vining 13:50:45 -11.4 NT Up 23.8 276.9 Low 13:44:13 - 13:57:16 9517
Beatty 13:50:40 -9.3 NT Up 21.8 278.6 Low 13:44:09 - 13:57:12 9489
Bishop 13:50:43 -10.7 NT Up 23.2 277.5 Low 13:44:11 - 13:57:14 9484
Patrick 13:50:33 -6.6 NT Up 19.3 280.7 Really Low 13:44:02 - 13:57:05 9441
Laughlin/Bullhead City 13:50:34 -7.1 NT Up 19.8 280.4 Really Low 13:44:02 - 13:57:05 9398
George/Scottsdale 13:50:28 -4.4 CT Up 17.3 282.3 Really Low 13:43:57 - 13:57:00 9349
Lake Havasu City 13:50:32 -6.6 NT Up 19.5 280.8 Really Low 13:44:01 - 13:57:04 9345
Idyllwild 13:50:32 -8.2 NT Up 21.3 279.9 Low 13:44:01 - 13:57:04 9204
Calipatria 13:50:29 -7.1 NT Up 20.2 280.7 Low 13:43:57 - 13:57:00 9183
Wildwood 13:50:35 -9.8 NT Up 22.9 278.8 Low 13:44:03 - 13:57:06 9180
Yuma 13:50:28 -6.2 NT Up 19.4 281.3 Really Low 13:43:57 - 13:57:00 9170

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 145453, (2027/11/26 13:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.26 153
Alnath         05:26:17.6 +28:36:23  1.6  9.30 143
PPM 120839     05:20:18.3 +19:34:41  6.5  0.74 143
PPM 120767     05:15:43.8 +19:43:48  8.3  0.38 144
PPM 120783     05:16:47.4 +19:18:09  8.9  0.26 144
145453         05:17:08.7 +19:32:53 15.9       144
Positions are for J2000

Event circumstances last updated at 2024/04/23 03:32:14 UT

Marc W. Buie, Southwest Research Institute

RECON