RECON: TNO occultation with 523776

Event between (523776) 14YB50 and star GA1200:03287234 with event index number of 2354102

Geocentric closest approach at 2028/02/15 04:43:14 UTC

J2000 position of star is 09:29:02.1 +31:42:12
Equinox of date position of star is 09:30:28.7 +31:35:48
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 73% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 37.7 AU from the Sun and 36.7 AU from the Earth.
Apparent velocity is 25.0 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 104 seconds.
The 1-sigma cross-track error in the shadow position is 1506 km.
The sky-plane scale is 26635.2 km/arcsec.

The object has an absolute magnitude Hv=6.0
Diameter=369.8 km assuming a 5% albedo -- 15.2 sec chord
Diameter=151.0 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523776, (2028/02/15 04:42UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:52.1 +11:49:43  1.3 21.72  60
40Alp Lyn      09:22:45.7 +34:16:19  3.1  3.17  80
PPM 074550     09:31:43.1 +31:54:59  8.4  0.40  77
PPM 074526     09:29:34.9 +31:20:28  9.3  0.34  77
523776         09:30:42.7 +31:34:45 15.0        77
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 38.5 km RECON observability=1.0 and success probability=0.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:45:09 -40.3 Dark Down 59.0 118.4 Up 04:35:58 - 04:54:19 4622
Kamloops 04:45:43 -33.3 Dark Down 51.1 101.0 Up 04:36:33 - 04:54:54 4514
Kelowna 04:45:42 -34.1 Dark Down 51.8 100.9 Up 04:36:32 - 04:54:53 4419
Peachland 04:45:43 -34.0 Dark Down 51.6 100.5 Up 04:36:33 - 04:54:54 4410
Summerland 04:45:43 -34.1 Dark Down 51.7 100.4 Up 04:36:33 - 04:54:54 4393
Penticton 04:45:43 -34.2 Dark Down 51.8 100.4 Up 04:36:32 - 04:54:53 4385
Oliver 04:45:43 -34.3 Dark Down 51.9 99.9 Up 04:36:32 - 04:54:53 4347
Anarchist Mountain Observatory 04:45:43 -34.5 Dark Down 52.0 99.9 Up 04:36:33 - 04:54:54 4327
Victoria 04:45:53 -32.2 Dark Down 49.5 95.8 Up 04:36:43 - 04:55:04 4312
Okanogan 04:45:44 -34.6 Dark Down 52.0 98.9 Up 04:36:33 - 04:54:54 4259
Brewster 04:45:45 -34.6 Dark Down 51.9 98.4 Up 04:36:34 - 04:54:55 4231
Manson/Chelan 04:45:46 -34.4 Dark Down 51.7 97.8 Up 04:36:35 - 04:54:56 4211
Wenatchee 04:45:47 -34.5 Dark Down 51.6 97.1 Up 04:36:36 - 04:54:57 4161
Ellensburg 04:45:47 -34.5 Dark Down 51.5 96.4 Up 04:36:37 - 04:54:58 4119
Yakima 04:45:48 -34.6 Dark Down 51.6 95.8 Up 04:36:37 - 04:54:58 4074
Toppenish/White Swan 04:45:48 -34.8 Dark Down 51.7 95.7 Up 04:36:37 - 04:54:58 4049
PNWRO 04:45:44 -35.9 Dark Down 52.8 96.4 Up 04:36:33 - 04:54:54 3997
The Dalles 04:45:50 -34.5 Dark Down 51.2 94.1 Up 04:36:40 - 04:55:01 3972
Maupin 04:45:50 -34.7 Dark Down 51.3 93.7 Up 04:36:39 - 04:55:00 3926
Sisters 04:45:51 -34.7 Dark Down 51.0 92.2 Up 04:36:41 - 04:55:02 3835
Bend 04:45:52 -34.9 Dark Down 51.2 92.1 Up 04:36:41 - 04:55:02 3806
Oregon Observatory 04:45:52 -34.9 Dark Down 51.1 91.8 Up 04:36:42 - 04:55:03 3788
Chiloquin 04:45:55 -35.0 Dark Down 50.8 89.9 Up 04:36:44 - 04:55:05 3648
Klamath Falls 04:45:54 -35.1 Dark Down 50.9 89.5 Up 04:36:44 - 04:55:05 3610
Cedarville 04:45:51 -36.5 Dark Down 52.1 89.7 Up 04:36:40 - 04:55:01 3517
Fall River/Burney 04:45:54 -35.7 Dark Down 51.2 88.3 Up 04:36:43 - 04:55:04 3477
Greenville 04:45:54 -36.3 Dark Down 51.5 87.4 Up 04:36:43 - 04:55:04 3372
Gimple 04:45:53 -36.3 Dark Down 51.5 87.5 Up 04:36:43 - 04:55:04 3371
Quincy 04:45:54 -36.3 Dark Down 51.5 87.2 Up 04:36:43 - 04:55:04 3350
Portola 04:45:52 -36.7 Dark Down 51.8 87.3 Up 04:36:42 - 04:55:03 3331
Dunrhomin 04:45:09 -47.3 Dark Down 63.4 98.7 Up 04:35:58 - 04:54:19 3328
Nikitin 04:45:09 -47.4 Dark Down 63.4 98.4 Up 04:35:59 - 04:54:20 3308
CU-SBO 04:45:09 -47.3 Dark Down 63.3 98.2 Up 04:35:58 - 04:54:19 3301
Reno 04:45:51 -37.3 Dark Down 52.3 87.4 Up 04:36:40 - 04:55:01 3295
Carson City 04:45:51 -37.4 Dark Down 52.3 86.9 Up 04:36:40 - 04:55:01 3256
Yerington 04:45:49 -37.9 Dark Down 52.8 87.0 Up 04:36:39 - 04:55:00 3228
Gardnerville 04:45:51 -37.5 Dark Down 52.3 86.6 Up 04:36:41 - 04:55:02 3228
Hawthorne 04:45:48 -38.4 Dark Down 53.2 86.7 Up 04:36:38 - 04:54:59 3172
Lee Vining 04:45:49 -38.2 Dark Down 52.7 85.7 Up 04:36:39 - 04:55:00 3114
Bishop 04:45:48 -38.9 Dark Down 53.3 85.3 Up 04:36:38 - 04:54:59 3042
Beatty 04:45:44 -40.3 Dark Down 54.5 85.5 Up 04:36:33 - 04:54:54 2978
Patrick 04:45:35 -42.9 Dark Down 56.7 84.7 Up 04:36:24 - 04:54:45 2796
Laughlin/Bullhead City 04:45:37 -42.4 Dark Down 56.1 84.0 Up 04:36:26 - 04:54:47 2773
Lake Havasu City 04:45:36 -42.8 Dark Down 56.2 83.1 Up 04:36:26 - 04:54:47 2697
Wildwood 04:45:49 -39.5 Dark Down 52.7 80.9 Up 04:36:39 - 04:55:00 2683
Idyllwild 04:45:44 -41.1 Dark Down 54.2 81.1 Up 04:36:34 - 04:54:55 2627
George/Scottsdale 04:45:29 -45.0 Dark Down 58.1 82.9 Up 04:36:19 - 04:54:40 2601
Calipatria 04:45:40 -42.2 Dark Down 55.1 80.7 Up 04:36:29 - 04:54:50 2552
Yuma 04:45:38 -43.0 Dark Down 55.7 80.4 Up 04:36:27 - 04:54:48 2499

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 523776, (2028/02/15 04:42UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 21.72  60
40Alp Lyn      09:21:02.9 +34:23:34  3.1  3.17  80
PPM 074550     09:30:02.4 +32:02:28  8.4  0.40  77
PPM 074526     09:27:54.3 +31:27:54  9.3  0.34  77
523776         09:29:02.1 +31:42:12 15.0        77
Positions are for J2000

Event circumstances last updated at 2024/03/19 04:05:24 UT

Marc W. Buie, Southwest Research Institute

RECON