RECON: TNO occultation with 523647

Event between (523647) 10VV224 and star GA1000:00489713 with event index number of 2625890

Geocentric closest approach at 2027/10/14 07:07:51 UTC

J2000 position of star is 04:39:04.7 +11:18:34
Equinox of date position of star is 04:40:24.6 +11:21:19
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 66 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 37.3 AU from the Sun and 36.6 AU from the Earth.
Apparent velocity is 16.2 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1526 km.
The sky-plane scale is 26570.8 km/arcsec.

The object has an absolute magnitude Hv=6.0
Diameter=369.8 km assuming a 5% albedo -- 23.9 sec chord
Diameter=151.0 km assuming a 30% albedo -- 9.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523647, (2027/10/14 07:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.1 +16:33:47  0.8  5.25  65
Bellatrix      05:26:37.4 +06:22:21  1.6 12.41  77
PPM 120064     04:37:52.0 +11:28:02  6.5  0.68  65
PPM 120077     04:38:40.3 +10:53:46  7.8  0.67  65
PPM 120115     04:40:50.1 +11:19:03  9.8  0.07  66
523647         04:40:37.1 +11:21:45 16.2        66
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 15.2 km RECON observability=1.0 and success probability=15.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 07:09:00 -48.2 Dark Up 26.0 102.9 Low 06:56:50 - 07:21:10 -950
Kamloops 07:08:41 -46.7 Dark Up 27.3 106.4 Low 06:56:31 - 07:20:51 -969
Peachland 07:08:46 -47.7 Dark Up 28.0 106.5 Low 06:56:36 - 07:20:56 -1014
Kelowna 07:08:45 -47.6 Dark Up 28.1 106.8 Low 06:56:35 - 07:20:55 -1019
Summerland 07:08:47 -47.8 Dark Up 28.1 106.5 Low 06:56:37 - 07:20:57 -1021
Penticton 07:08:48 -47.9 Dark Up 28.2 106.6 Low 06:56:38 - 07:20:58 -1027
Oliver 07:08:50 -48.2 Dark Up 28.3 106.4 Low 06:56:40 - 07:21:00 -1038
Anarchist Mountain Observatory 07:08:51 -48.4 Dark Up 28.4 106.5 Low 06:56:41 - 07:21:01 -1049
Manson/Chelan 07:08:59 -49.4 Dark Up 28.3 105.2 Low 06:56:49 - 07:21:09 -1064
Okanogan 07:08:55 -49.0 Dark Up 28.5 105.9 Low 06:56:45 - 07:21:05 -1064
Brewster 07:08:57 -49.3 Dark Up 28.4 105.6 Low 06:56:47 - 07:21:07 -1068
Wenatchee 07:09:03 -49.8 Dark Up 28.3 104.9 Low 06:56:53 - 07:21:13 -1075
Ellensburg 07:09:05 -50.2 Dark Up 28.3 104.5 Low 06:56:55 - 07:21:15 -1083
Yakima 07:09:08 -50.6 Dark Up 28.4 104.3 Low 06:56:58 - 07:21:18 -1098
Toppenish/White Swan 07:09:09 -50.8 Dark Up 28.5 104.3 Low 06:56:59 - 07:21:19 -1111
The Dalles 07:09:15 -51.4 Dark Up 28.2 103.3 Low 06:57:05 - 07:21:25 -1116
Maupin 07:09:17 -51.9 Dark Up 28.4 103.1 Low 06:57:07 - 07:21:27 -1135
Sisters 07:09:24 -52.6 Dark Up 28.2 102.3 Low 06:57:14 - 07:21:34 -1153
PNWRO 07:09:09 -51.4 Dark Up 29.6 105.3 Low 06:56:59 - 07:21:19 -1171
Bend 07:09:25 -52.9 Dark Up 28.5 102.4 Low 06:57:15 - 07:21:35 -1171
Oregon Observatory 07:09:26 -53.0 Dark Up 28.4 102.2 Low 06:57:16 - 07:21:36 -1174
Chiloquin 07:09:35 -54.2 Dark Up 28.4 101.2 Low 06:57:25 - 07:21:45 -1215
Klamath Falls 07:09:37 -54.5 Dark Up 28.5 101.1 Low 06:57:27 - 07:21:47 -1232
Fall River/Burney 07:09:44 -55.8 Dark Up 29.1 100.8 Low 06:57:34 - 07:21:54 -1297
Cedarville 07:09:39 -55.6 Dark Up 29.9 101.9 Low 06:57:29 - 07:21:49 -1315
Greenville 07:09:49 -56.7 Dark Up 29.6 100.6 Low 06:57:39 - 07:21:59 -1353
Gimple 07:09:48 -56.7 Dark Up 29.7 100.7 Low 06:57:38 - 07:21:58 -1356
Sleaford 07:08:06 -45.8 Dark Up 35.0 120.5 Up 06:55:56 - 07:20:16 -1357
Quincy 07:09:50 -56.9 Dark Up 29.6 100.5 Low 06:57:40 - 07:22:00 -1363
Portola 07:09:50 -57.2 Dark Up 30.0 100.8 Up 06:57:40 - 07:22:00 -1385
Reno 07:09:50 -57.6 Dark Up 30.6 101.1 Up 06:57:40 - 07:22:00 -1420
Carson City 07:09:52 -57.9 Dark Up 30.7 100.9 Up 06:57:42 - 07:22:02 -1438
Gardnerville 07:09:53 -58.1 Dark Up 30.7 100.8 Up 06:57:43 - 07:22:03 -1451
Yerington 07:09:52 -58.2 Dark Up 31.2 101.2 Up 06:57:42 - 07:22:02 -1469
Hawthorne 07:09:53 -58.8 Dark Up 31.7 101.3 Up 06:57:43 - 07:22:03 -1511
Lee Vining 07:09:58 -59.2 Dark Up 31.4 100.7 Up 06:57:48 - 07:22:08 -1522
Bishop 07:10:01 -60.0 Dark Up 32.1 100.8 Up 06:57:51 - 07:22:11 -1580
Beatty 07:09:59 -60.7 Dark Up 33.5 101.7 Up 06:57:49 - 07:22:09 -1664
Wildwood 07:10:20 -63.1 Dark Up 32.6 98.7 Up 06:58:10 - 07:22:30 -1752
Idyllwild 07:10:18 -63.8 Dark Up 34.2 99.7 Up 06:58:08 - 07:22:28 -1844
Laughlin/Bullhead City 07:10:03 -62.7 Dark Up 35.6 102.1 Up 06:57:53 - 07:22:13 -1845
Patrick 07:10:02 -62.5 Dark Up 36.1 102.7 Up 06:57:52 - 07:22:12 -1858
Lake Havasu City 07:10:08 -63.4 Dark Up 35.9 101.8 Up 06:57:58 - 07:22:18 -1894
Calipatria 07:10:18 -64.6 Dark Up 35.2 100.0 Up 06:58:08 - 07:22:28 -1928
Dunrhomin 07:09:12 -57.4 Dark Up 41.0 113.3 Up 06:57:02 - 07:21:22 -1930
Nikitin 07:09:12 -57.6 Dark Up 41.0 113.1 Up 06:57:02 - 07:21:22 -1940
CU-SBO 07:09:13 -57.7 Dark Up 41.0 113.0 Up 06:57:03 - 07:21:23 -1940
Yuma 07:10:19 -65.2 Dark Up 36.1 100.3 Up 06:58:09 - 07:22:29 -1989
George/Scottsdale 07:10:06 -64.4 Dark Up 38.1 102.9 Up 06:57:56 - 07:22:16 -2039

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 523647, (2027/10/14 07:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  5.25  65
Bellatrix      05:25:07.8 +06:20:58  1.6 12.41  77
PPM 120064     04:36:19.5 +11:24:45  6.5  0.68  65
PPM 120077     04:37:08.2 +10:50:30  7.8  0.67  65
PPM 120115     04:39:17.7 +11:15:53  9.8  0.07  66
523647         04:39:04.7 +11:18:34 16.2        65
Positions are for J2000

Event circumstances last updated at 2024/01/09 04:39:19 UT

Marc W. Buie, Southwest Research Institute

RECON