RECON: TNO occultation with 567122

Event between (567122) 20PM3 and star GA1360:00629202 with event index number of 2643210

Geocentric closest approach at 2027/10/12 08:55:11 UTC

J2000 position of star is 01:34:23.6 +47:28:08
Equinox of date position of star is 01:35:51.2 +47:35:26
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 12.2 AU from the Sun and 11.4 AU from the Earth.
Apparent velocity is 20.1 km/sec on the sky relative to the star, or, 8.8 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is 1468 km.
The sky-plane scale is 8270.2 km/arcsec.

The object has an absolute magnitude Hv=9.2
Diameter=80.5 km assuming a 5% albedo -- 4.3 sec chord
Diameter=32.9 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 567122, (2027/10/12 08:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.1 +16:33:47  0.8 48.35  88
57Gam1And      02:05:37.0 +42:27:42  2.3  7.32  64
49 And         01:31:46.9 +47:08:58  6.1  0.86  63
PPM 044226     01:38:59.2 +47:05:22  7.7  0.72  63
PPM 044107     01:34:37.8 +47:44:12  9.3  0.28  63
PPM 044143     01:35:49.9 +47:24:01 11.6  0.21  63
567122         01:36:05.4 +47:36:37 16.5        64
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 32.0 km RECON observability=1.0 and success probability=41.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:53:50 -38.6 Dark Up 73.5 263.6 Up 08:46:59 - 09:00:42 683
Kamloops 08:54:36 -44.5 Dark Up 82.5 248.8 Up 08:47:44 - 09:01:27 308
Kelowna 08:54:32 -45.0 Dark Up 82.2 256.5 Up 08:47:40 - 09:01:23 227
Peachland 08:54:33 -45.2 Dark Up 82.4 256.8 Up 08:47:41 - 09:01:24 212
Summerland 08:54:33 -45.3 Dark Up 82.4 258.0 Up 08:47:41 - 09:01:24 197
Penticton 08:54:32 -45.4 Dark Up 82.3 258.7 Up 08:47:41 - 09:01:24 191
Oliver 08:54:32 -45.7 Dark Up 82.4 261.3 Up 08:47:40 - 09:01:23 152
Anarchist Mountain Observatory 08:54:31 -45.8 Dark Up 82.3 262.8 Up 08:47:40 - 09:01:23 135
Okanogan 08:54:31 -46.4 Dark Up 82.5 267.3 Up 08:47:40 - 09:01:23 62
Victoria 08:54:45 -47.3 Dark Up 84.9 260.8 Up 08:47:54 - 09:01:37 45
Brewster 08:54:32 -46.7 Dark Up 82.6 269.2 Up 08:47:40 - 09:01:23 30
Manson/Chelan 08:54:33 -47.0 Dark Up 82.9 270.6 Up 08:47:41 - 09:01:24 3
Wenatchee 08:54:33 -47.5 Dark Up 83.0 274.3 Up 08:47:42 - 09:01:25 -51
Ellensburg 08:54:34 -47.9 Dark Up 83.1 277.6 Up 08:47:42 - 09:01:25 -99
Yakima 08:54:33 -48.3 Dark Up 83.0 280.9 Up 08:47:42 - 09:01:25 -144
Toppenish/White Swan 08:54:33 -48.5 Dark Up 82.8 282.6 Up 08:47:41 - 09:01:24 -166
PNWRO 08:54:27 -48.3 Dark Up 81.8 284.5 Up 08:47:35 - 09:01:18 -190
The Dalles 08:54:35 -49.4 Dark Up 83.2 289.3 Up 08:47:44 - 09:01:27 -260
Maupin 08:54:34 -49.8 Dark Up 82.9 292.4 Up 08:47:43 - 09:01:26 -305
Sisters 08:54:36 -50.7 Dark Up 82.9 299.6 Up 08:47:44 - 09:01:27 -407
Bend 08:54:35 -50.8 Dark Up 82.6 300.7 Up 08:47:43 - 09:01:26 -430
Oregon Observatory 08:54:35 -51.0 Dark Up 82.6 302.1 Up 08:47:43 - 09:01:26 -451
Dunrhomin 08:53:28 -46.7 Dark Up 70.5 300.1 Up 08:46:37 - 09:00:20 -546
Nikitin 08:53:28 -46.8 Dark Up 70.4 300.6 Up 08:46:37 - 09:00:20 -566
CU-SBO 08:53:28 -46.9 Dark Up 70.4 300.7 Up 08:46:37 - 09:00:20 -575
Chiloquin 08:54:36 -52.4 Dark Up 82.0 311.0 Up 08:47:44 - 09:01:27 -600
Klamath Falls 08:54:35 -52.6 Dark Up 81.8 312.6 Up 08:47:44 - 09:01:27 -637
Cedarville 08:54:29 -52.7 Dark Up 80.4 311.9 Up 08:47:37 - 09:01:20 -696
Fall River/Burney 08:54:33 -53.6 Dark Up 80.7 317.0 Up 08:47:42 - 09:01:25 -762
Gimple 08:54:30 -54.2 Dark Up 79.8 319.2 Up 08:47:39 - 09:01:22 -856
Greenville 08:54:31 -54.2 Dark Up 79.8 319.4 Up 08:47:39 - 09:01:22 -857
Quincy 08:54:31 -54.4 Dark Up 79.7 320.1 Up 08:47:39 - 09:01:22 -879
Portola 08:54:28 -54.3 Dark Up 79.3 319.3 Up 08:47:37 - 09:01:20 -887
Reno 08:54:26 -54.3 Dark Up 78.8 318.7 Up 08:47:34 - 09:01:17 -909
Carson City 08:54:25 -54.6 Dark Up 78.5 319.8 Up 08:47:34 - 09:01:17 -948
Yerington 08:54:23 -54.6 Dark Up 78.1 319.1 Up 08:47:31 - 09:01:14 -961
Gardnerville 08:54:25 -54.8 Dark Up 78.3 320.5 Up 08:47:34 - 09:01:17 -974
Hawthorne 08:54:20 -54.7 Dark Up 77.5 319.4 Up 08:47:29 - 09:01:12 -1004
Lee Vining 08:54:22 -55.4 Dark Up 77.3 322.0 Up 08:47:30 - 09:01:13 -1072
Bishop 08:54:18 -55.6 Dark Up 76.4 322.1 Up 08:47:27 - 09:01:10 -1127
Beatty 08:54:11 -55.2 Dark Up 75.3 320.3 Up 08:47:20 - 09:01:03 -1152
Patrick 08:53:58 -54.9 Dark Up 72.7 319.2 Up 08:47:06 - 09:00:49 -1261
Laughlin/Bullhead City 08:54:00 -55.5 Dark Up 72.8 320.7 Up 08:47:09 - 09:00:52 -1300
Lake Havasu City 08:53:59 -55.9 Dark Up 72.2 321.7 Up 08:47:07 - 09:00:50 -1367
George/Scottsdale 08:53:47 -55.0 Dark Up 70.3 319.9 Up 08:46:56 - 09:00:39 -1399
Wildwood 08:54:17 -58.4 Dark Up 73.8 329.4 Up 08:47:26 - 09:01:09 -1481
Idyllwild 08:54:08 -57.7 Dark Up 72.7 326.8 Up 08:47:17 - 09:01:00 -1491
Calipatria 08:54:03 -57.5 Dark Up 71.7 325.9 Up 08:47:11 - 09:00:54 -1534
Yuma 08:53:58 -57.3 Dark Up 70.9 325.3 Up 08:47:07 - 09:00:50 -1564

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 567122, (2027/10/12 08:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 48.35  88
57Gam1And      02:03:54.1 +42:19:46  2.3  7.32  64
49 And         01:30:06.1 +47:00:25  6.1  0.86  63
PPM 044226     01:37:17.2 +46:56:55  7.7  0.72  63
PPM 044107     01:32:56.2 +47:35:41  9.3  0.28  63
PPM 044143     01:34:08.3 +47:15:31 11.6  0.21  63
567122         01:34:23.6 +47:28:08 16.5        63
Positions are for J2000

Event circumstances last updated at 2023/11/27 04:19:49 UT

Marc W. Buie, Southwest Research Institute

RECON