RECON: TNO occultation with 12TF324

Event between 12TF324 and star GA1120:00284252 with event index number of 2160892

Geocentric closest approach at 2027/11/12 08:17:22 UTC

J2000 position of star is 02:29:12.9 +23:12:21
Equinox of date position of star is 02:30:28.5 +23:18:12
Stellar brightness G=13.3, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 15 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 38.6 AU from the Sun and 37.7 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 185 seconds.
The 1-sigma cross-track error in the shadow position is 2546 km.
The sky-plane scale is 27312.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=296.5 km assuming a 5% albedo -- 12.0 sec chord
Diameter=121.0 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 12TF324, (2027/11/12 08:16UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.4 +16:33:48  0.8 30.47  44
Hamal          02:08:45.0 +23:35:35  2.0  5.06  11
32Nu Ari       02:40:24.3 +22:04:49  5.4  2.54  17
PPM 091714     02:30:23.8 +23:59:37  8.5  0.67  15
PPM 091733     02:31:57.1 +23:25:00  9.8  0.28  15
12TF324        02:30:48.3 +23:19:44 13.3        16
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 4.9 sigma about the mid-time.
The median site spacing is 29.3 km RECON observability=1.0 and success probability=21.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:15:56 -56.4 Dark Up 59.3 212.9 Up 08:00:56 - 08:30:56 1688
Sleaford 08:15:20 -51.5 Dark Up 52.2 232.4 Up 08:00:20 - 08:30:20 1679
Kelowna 08:15:54 -57.1 Dark Up 59.7 215.2 Up 08:00:54 - 08:30:54 1593
Peachland 08:15:55 -57.2 Dark Up 59.9 214.8 Up 08:00:55 - 08:30:55 1586
Summerland 08:15:55 -57.4 Dark Up 60.0 215.1 Up 08:00:55 - 08:30:55 1570
Penticton 08:15:54 -57.4 Dark Up 60.0 215.4 Up 08:00:54 - 08:30:54 1561
Oliver 08:15:54 -57.8 Dark Up 60.3 215.7 Up 08:00:54 - 08:30:54 1526
Victoria 08:16:05 -58.9 Dark Up 62.2 209.6 Up 08:01:05 - 08:31:05 1520
Anarchist Mountain Observatory 08:15:54 -57.9 Dark Up 60.3 216.2 Up 08:00:54 - 08:30:54 1505
Tonasket 08:15:54 -58.2 Dark Up 60.6 216.4 Up 08:00:54 - 08:30:54 1475
Okanogan 08:15:55 -58.5 Dark Up 60.9 216.5 Up 08:00:55 - 08:30:55 1443
Brewster 08:15:55 -58.8 Dark Up 61.2 216.5 Up 08:00:55 - 08:30:55 1418
Manson/Chelan 08:15:56 -59.1 Dark Up 61.6 216.1 Up 08:00:56 - 08:30:56 1403
Wenatchee 08:15:57 -59.6 Dark Up 62.0 216.3 Up 08:00:57 - 08:30:57 1357
Ellensburg 08:15:58 -60.0 Dark Up 62.4 216.4 Up 08:00:58 - 08:30:58 1318
Yakima 08:15:58 -60.4 Dark Up 62.8 216.8 Up 08:00:58 - 08:30:58 1276
Toppenish/White Swan 08:15:58 -60.6 Dark Up 62.9 217.4 Up 08:00:58 - 08:30:58 1251
Goldendale 08:15:59 -61.2 Dark Up 63.5 217.3 Up 08:00:59 - 08:30:59 1201
PNWRO 08:15:54 -60.7 Dark Up 62.5 220.4 Up 08:00:54 - 08:30:54 1190
The Dalles 08:16:01 -61.5 Dark Up 63.8 216.9 Up 08:01:01 - 08:31:01 1184
Maupin 08:16:01 -61.9 Dark Up 64.1 217.6 Up 08:01:01 - 08:31:01 1139
Sisters 08:16:02 -62.8 Dark Up 65.0 217.8 Up 08:01:02 - 08:31:02 1056
Bend 08:16:02 -63.0 Dark Up 65.1 218.6 Up 08:01:02 - 08:31:02 1027
Oregon Observatory 08:16:02 -63.2 Dark Up 65.3 218.6 Up 08:01:02 - 08:31:02 1011
North Lake 08:16:01 -63.7 Dark Up 65.5 220.5 Up 08:01:01 - 08:31:01 935
Chiloquin 08:16:05 -64.6 Dark Up 66.5 219.7 Up 08:01:05 - 08:31:05 881
Klamath Falls 08:16:04 -64.9 Dark Up 66.7 220.3 Up 08:01:04 - 08:31:04 844
Lakeview 08:16:00 -64.6 Dark Up 66.0 223.1 Up 08:01:00 - 08:31:00 815
Cedarville 08:16:00 -65.2 Dark Up 66.4 224.5 Up 08:01:00 - 08:31:00 742
Fall River/Burney 08:16:04 -65.9 Dark Up 67.4 222.9 Up 08:01:04 - 08:31:04 713
Susanville 08:16:02 -66.4 Dark Up 67.5 225.4 Up 08:01:02 - 08:31:02 633
Greenville 08:16:03 -66.7 Dark Up 67.8 225.4 Up 08:01:03 - 08:31:03 609
Gimple 08:16:03 -66.7 Dark Up 67.8 225.5 Up 08:01:03 - 08:31:03 607
Quincy 08:16:03 -66.9 Dark Up 68.0 225.7 Up 08:01:03 - 08:31:03 588
Portola 08:16:02 -66.9 Dark Up 67.8 226.9 Up 08:01:02 - 08:31:02 566
Reno 08:16:00 -67.0 Dark Up 67.6 228.6 Up 08:01:00 - 08:31:00 526
Carson City 08:16:00 -67.3 Dark Up 67.8 229.3 Up 08:01:00 - 08:31:00 487
Gardnerville 08:16:00 -67.5 Dark Up 67.9 229.8 Up 08:01:00 - 08:31:00 460
Yerington 08:15:58 -67.3 Dark Up 67.6 230.8 Up 08:00:58 - 08:30:58 455
Dunrhomin 08:15:14 -60.1 Dark Up 57.7 248.0 Up 08:00:14 - 08:30:14 420
Hawthorne 08:15:57 -67.6 Dark Up 67.5 232.6 Up 08:00:57 - 08:30:57 397
Lee Vining 08:15:58 -68.3 Dark Up 68.2 232.9 Up 08:00:58 - 08:30:58 345
Tonopah 08:15:52 -67.5 Dark Up 66.9 235.9 Up 08:00:52 - 08:30:52 323
Bishop 08:15:56 -68.6 Dark Up 68.1 235.3 Up 08:00:56 - 08:30:56 268
Beatty 08:15:51 -68.4 Dark Up 67.2 238.9 Up 08:00:51 - 08:30:51 191
Indian Springs 08:15:48 -68.2 Dark Up 66.7 241.3 Up 08:00:48 - 08:30:48 138
Henderson 08:15:46 -68.3 Dark Up 66.4 243.3 Up 08:00:46 - 08:30:46 70
Patrick 08:15:42 -68.3 Dark Up 65.9 246.1 Up 08:00:42 - 08:30:42 -15
Laughlin/Bullhead City 08:15:45 -68.9 Dark Up 66.5 245.7 Up 08:00:45 - 08:30:45 -31
Kingman/Dolan Springs 08:15:43 -68.6 Dark Up 66.1 246.3 Up 08:00:43 - 08:30:43 -36
Mohave Valley 08:15:45 -69.1 Dark Up 66.6 246.3 Up 08:00:45 - 08:30:45 -61
Wildwood 08:15:59 -71.6 Dark Up 69.9 242.3 Up 08:00:59 - 08:30:59 -81
Lake Havasu City 08:15:44 -69.3 Dark Up 66.6 247.5 Up 08:00:44 - 08:30:44 -108
Parker 08:15:45 -69.5 Dark Up 66.7 248.3 Up 08:00:45 - 08:30:45 -147
Idyllwild 08:15:53 -71.0 Dark Up 68.7 246.0 Up 08:00:53 - 08:30:53 -153
George/Scottsdale 08:15:36 -68.5 Dark Up 64.9 252.0 Up 08:00:36 - 08:30:36 -227
Calipatria 08:15:49 -70.9 Dark Up 68.0 249.0 Up 08:00:49 - 08:30:49 -239
Yuma 08:15:46 -70.8 Dark Up 67.4 251.1 Up 08:00:46 - 08:30:46 -300

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 12TF324, (2027/11/12 08:16UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 30.47  44
Hamal          02:07:10.7 +23:27:41  2.0  5.06  11
32Nu Ari       02:38:49.0 +21:57:41  5.4  2.54  17
PPM 091714     02:28:48.1 +23:52:14  8.5  0.67  15
PPM 091733     02:30:21.5 +23:17:38  9.8  0.28  15
12TF324        02:29:12.9 +23:12:21 13.3        15
Positions are for J2000

Event circumstances last updated at 2022/01/30 00:38:21 UT

Marc W. Buie, Southwest Research Institute

RECON