RECON: TNO occultation with 145480

Event between (145480) 05TB190 and star GA0880:00034877 with event index number of 2469675

Geocentric closest approach at 2027/10/28 03:41:17 UTC

J2000 position of star is 00:24:04.6 -00:25:28
Equinox of date position of star is 00:25:18.7 -00:17:29
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=21.2

[RECON map]
Object is 46.6 AU from the Sun and 45.8 AU from the Earth.
Apparent velocity is 21.5 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 88 seconds.
The 1-sigma cross-track error in the shadow position is 1716 km.
The sky-plane scale is 33183.5 km/arcsec.

The object has an absolute magnitude Hv=4.5
Diameter=748.2 km assuming a 5% albedo -- 35.2 sec chord
Diameter=305.4 km assuming a 30% albedo -- 14.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 145480, (2027/10/28 03:37UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:10.8 -29:28:26  1.2 35.72 131
Algenib        00:14:40.3 +15:20:17  2.8 15.84 170
PPM 182216     00:25:55.0 -02:03:55  6.1  1.80 165
10 Cet         00:28:03.1 +00:06:15  7.0  0.74 168
PPM 174714     00:25:06.0 -00:23:15  9.5  0.15 167
145480         00:25:30.2 -00:16:14 17.0       167
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 15.8 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 03:41:09 -28.2 Dark Down 31.0 138.2 Up 03:33:21 - 03:48:58 4361
Victoria 03:41:24 -26.8 Dark Down 31.2 134.2 Up 03:33:36 - 03:49:13 4353
Peachland 03:41:11 -28.9 Dark Down 31.9 138.5 Up 03:33:22 - 03:48:59 4308
Kelowna 03:41:09 -29.0 Dark Down 32.0 138.9 Up 03:33:21 - 03:48:58 4304
Summerland 03:41:11 -29.0 Dark Down 32.1 138.5 Up 03:33:22 - 03:48:59 4299
Penticton 03:41:11 -29.0 Dark Down 32.2 138.6 Up 03:33:22 - 03:48:59 4293
Oliver 03:41:12 -29.1 Dark Down 32.4 138.5 Up 03:33:23 - 03:49:00 4278
Anarchist Mountain Observatory 03:41:12 -29.3 Dark Down 32.6 138.6 Up 03:33:24 - 03:49:01 4266
Okanogan 03:41:15 -29.3 Dark Down 33.0 138.1 Up 03:33:26 - 03:49:03 4243
Manson/Chelan 03:41:18 -29.1 Dark Down 33.1 137.3 Up 03:33:30 - 03:49:07 4238
Brewster 03:41:17 -29.3 Dark Down 33.1 137.8 Up 03:33:28 - 03:49:05 4237
Wenatchee 03:41:20 -29.1 Dark Down 33.4 136.9 Up 03:33:32 - 03:49:09 4221
Ellensburg 03:41:23 -29.0 Dark Down 33.6 136.5 Up 03:33:34 - 03:49:11 4209
Yakima 03:41:24 -29.1 Dark Down 33.9 136.3 Up 03:33:35 - 03:49:12 4191
Toppenish/White Swan 03:41:24 -29.3 Dark Down 34.1 136.4 Up 03:33:36 - 03:49:13 4176
The Dalles 03:41:29 -28.9 Dark Down 34.3 135.2 Up 03:33:40 - 03:49:17 4161
Maupin 03:41:30 -29.1 Dark Down 34.7 135.1 Up 03:33:41 - 03:49:18 4138
PNWRO 03:41:21 -30.4 Dark Down 35.1 137.8 Up 03:33:33 - 03:49:10 4115
Sisters 03:41:34 -28.9 Dark Down 35.1 134.2 Up 03:33:46 - 03:49:23 4110
Bend 03:41:35 -29.1 Dark Down 35.4 134.4 Up 03:33:46 - 03:49:23 4091
Oregon Observatory 03:41:36 -29.1 Dark Down 35.4 134.1 Up 03:33:47 - 03:49:24 4086
Chiloquin 03:41:42 -29.0 Dark Down 36.1 133.0 Up 03:33:53 - 03:49:30 4031
Sleaford 03:40:29 -36.0 Dark Down 34.7 154.7 Up 03:32:40 - 03:48:17 4020
Klamath Falls 03:41:42 -29.1 Dark Down 36.4 132.9 Up 03:33:54 - 03:49:31 4010
Fall River/Burney 03:41:46 -29.6 Dark Down 37.4 132.7 Up 03:33:57 - 03:49:34 3935
Cedarville 03:41:40 -30.4 Dark Down 37.7 134.3 Up 03:33:52 - 03:49:29 3924
Greenville 03:41:48 -30.1 Dark Down 38.3 132.7 Up 03:33:59 - 03:49:36 3871
Gimple 03:41:47 -30.1 Dark Down 38.3 132.8 Up 03:33:59 - 03:49:36 3868
Quincy 03:41:48 -30.1 Dark Down 38.4 132.6 Up 03:34:00 - 03:49:37 3859
Portola 03:41:47 -30.5 Dark Down 38.8 133.0 Up 03:33:59 - 03:49:36 3837
Reno 03:41:46 -31.0 Dark Down 39.3 133.5 Up 03:33:58 - 03:49:35 3801
Carson City 03:41:48 -31.1 Dark Down 39.6 133.3 Up 03:33:59 - 03:49:36 3780
Gardnerville 03:41:48 -31.2 Dark Down 39.8 133.2 Up 03:34:00 - 03:49:37 3764
Yerington 03:41:46 -31.6 Dark Down 40.1 133.9 Up 03:33:58 - 03:49:35 3748
Hawthorne 03:41:46 -32.1 Dark Down 40.7 134.2 Up 03:33:58 - 03:49:35 3703
Lee Vining 03:41:50 -31.8 Dark Down 40.8 133.3 Up 03:34:01 - 03:49:38 3686
Bishop 03:41:50 -32.5 Dark Down 41.6 133.7 Up 03:34:01 - 03:49:38 3624
Beatty 03:41:46 -33.8 Dark Down 42.9 135.2 Up 03:33:58 - 03:49:35 3540
Wildwood 03:42:01 -32.8 Dark Down 43.8 131.3 Up 03:34:13 - 03:49:50 3422
Laughlin/Bullhead City 03:41:45 -35.8 Dark Down 45.4 136.6 Up 03:33:56 - 03:49:33 3350
Patrick 03:41:42 -36.4 Dark Down 45.6 137.6 Up 03:33:53 - 03:49:30 3341
Dunrhomin 03:40:59 -41.5 Dark Down 45.6 151.3 Up 03:33:10 - 03:48:47 3341
Idyllwild 03:41:56 -34.3 Dark Down 45.1 133.1 Up 03:34:08 - 03:49:45 3332
Nikitin 03:40:59 -41.6 Dark Down 45.7 151.2 Up 03:33:11 - 03:48:48 3330
CU-SBO 03:41:00 -41.6 Dark Down 45.7 151.0 Up 03:33:11 - 03:48:48 3329
Lake Havasu City 03:41:46 -36.2 Dark Down 46.0 136.4 Up 03:33:57 - 03:49:34 3296
Calipatria 03:41:55 -35.4 Dark Down 46.3 134.0 Up 03:34:06 - 03:49:43 3246
Yuma 03:41:53 -36.2 Dark Down 47.1 134.7 Up 03:34:04 - 03:49:41 3184
George/Scottsdale 03:41:40 -38.3 Dark Down 47.9 138.8 Up 03:33:52 - 03:49:29 3152

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 145480, (2027/10/28 03:37UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 35.72 131
Algenib        00:13:14.2 +15:11:01  2.8 15.84 170
PPM 182216     00:24:29.6 -02:13:10  6.1  1.80 165
10 Cet         00:26:37.5 -00:02:59  7.0  0.74 168
PPM 174714     00:23:40.4 -00:32:29  9.5  0.15 167
145480         00:24:04.6 -00:25:28 17.0       167
Positions are for J2000

Event circumstances last updated at 2024/01/30 03:34:25 UT

Marc W. Buie, Southwest Research Institute

RECON