RECON: TNO occultation with 04VU131

Event between 04VU131 and star GA1100:00517842 with event index number of 2654850

Geocentric closest approach at 2024/02/10 07:12:11 UTC

J2000 position of star is 04:06:06.6 +20:23:14
Equinox of date position of star is 04:07:26.5 +20:26:50
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 41.8 AU from the Sun and 41.6 AU from the Earth.
The TNO is moving 2.2 km/sec on the sky relative to the star, or, 0.3 arcsec/hr.
The 1-sigma error in the time of the event is 3312 seconds.
The 1-sigma cross-track error in the shadow position is 5507 km.
The sky-plane scale is 30143.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=203.2 km assuming a 5% albedo -- 94.0 sec chord
Diameter=83.0 km assuming a 30% albedo -- 38.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04VU131, (2024/02/10 07:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.4 +16:33:21  0.8  8.06 103
44Zet Per      03:55:39.2 +31:57:12  2.8 11.80  98
43Ome1Tau      04:10:34.5 +19:40:16  5.5  1.06  98
PPM 119606     04:07:01.2 +20:01:08  8.4  0.45  97
PPM 093259     04:08:03.5 +20:21:58  9.7  0.15  98
04VU131        04:07:31.3 +20:27:03 14.8        98
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 0.3 sigma about the mid-time.
The median site spacing is 26.4 km RECON observability=1.0 and success probability=10.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:40:10 -51.7 Dark Down 26.7 269.4 Low 06:25:10 - 06:55:10 309
Kamloops 06:42:49 -49.2 Dark Down 35.3 259.0 Up 06:27:49 - 06:57:49 -72
Kelowna 06:42:13 -50.2 Dark Down 35.0 260.2 Up 06:27:13 - 06:57:13 -132
Peachland 06:42:15 -50.2 Dark Down 35.2 260.0 Up 06:27:15 - 06:57:15 -147
Summerland 06:42:09 -50.3 Dark Down 35.2 260.1 Up 06:27:09 - 06:57:09 -159
Penticton 06:42:06 -50.4 Dark Down 35.1 260.3 Up 06:27:06 - 06:57:06 -163
Oliver 06:41:57 -50.7 Dark Down 35.2 260.5 Up 06:26:57 - 06:56:57 -196
Anarchist Mountain Observatory 06:41:48 -50.9 Dark Down 35.2 260.7 Up 06:26:48 - 06:56:48 -208
Tonasket 06:41:42 -51.1 Dark Down 35.3 260.9 Up 06:26:42 - 06:56:42 -238
Okanogan 06:41:36 -51.3 Dark Down 35.4 261.0 Up 06:26:36 - 06:56:36 -272
Brewster 06:41:33 -51.4 Dark Down 35.6 261.0 Up 06:26:33 - 06:56:33 -301
Victoria 06:42:49 -49.7 Dark Down 37.7 257.9 Up 06:27:49 - 06:57:49 -319
Manson/Chelan 06:41:34 -51.4 Dark Down 35.9 260.8 Up 06:26:34 - 06:56:34 -326
Wenatchee 06:41:26 -51.7 Dark Down 36.1 261.0 Up 06:26:26 - 06:56:26 -374
Ellensburg 06:41:19 -51.9 Dark Down 36.3 261.1 Up 06:26:19 - 06:56:19 -416
Yakima 06:41:11 -52.2 Dark Down 36.4 261.4 Up 06:26:11 - 06:56:11 -455
Toppenish/White Swan 06:41:02 -52.5 Dark Down 36.4 261.6 Up 06:26:02 - 06:56:02 -473
PNWRO 06:40:26 -53.3 Dark Down 35.5 263.0 Up 06:25:26 - 06:55:26 -482
Goldendale 06:40:58 -52.7 Dark Down 36.8 261.7 Up 06:25:58 - 06:55:58 -533
The Dalles 06:41:00 -52.7 Dark Down 37.0 261.6 Up 06:26:00 - 06:56:00 -561
Maupin 06:40:47 -53.0 Dark Down 37.1 261.9 Up 06:25:47 - 06:55:47 -599
Sisters 06:40:37 -53.4 Dark Down 37.6 262.2 Up 06:25:37 - 06:55:37 -693
Bend 06:40:26 -53.7 Dark Down 37.4 262.5 Up 06:25:26 - 06:55:26 -712
Oregon Observatory 06:40:24 -53.8 Dark Down 37.6 262.5 Up 06:25:24 - 06:55:24 -731
Dunrhomin 06:34:30 -62.8 Dark Down 26.7 274.9 Low 06:19:30 - 06:49:30 -749
CU-SBO 06:34:28 -63.0 Dark Down 26.7 275.0 Low 06:19:28 - 06:49:28 -775
North Lake 06:40:03 -54.4 Dark Down 37.3 263.4 Up 06:25:03 - 06:55:03 -784
Chiloquin 06:40:05 -54.4 Dark Down 38.1 263.2 Up 06:25:05 - 06:55:05 -868
Lakeview 06:39:28 -55.4 Dark Down 37.1 264.5 Up 06:24:28 - 06:54:28 -878
Klamath Falls 06:39:59 -54.7 Dark Down 38.1 263.5 Up 06:24:59 - 06:54:59 -900
Cedarville 06:39:11 -55.9 Dark Down 37.1 265.0 Up 06:24:11 - 06:54:11 -940
Fall River/Burney 06:39:25 -55.7 Dark Down 38.0 264.6 Up 06:24:25 - 06:54:25 -1011
Susanville 06:38:58 -56.4 Dark Down 37.6 265.5 Up 06:23:58 - 06:53:58 -1061
Gimple 06:38:54 -56.5 Dark Down 37.8 265.6 Up 06:23:54 - 06:53:54 -1092
Greenville 06:38:59 -56.5 Dark Down 37.9 265.5 Up 06:23:59 - 06:53:59 -1094
Quincy 06:38:53 -56.6 Dark Down 37.9 265.7 Up 06:23:53 - 06:53:53 -1114
Portola 06:38:39 -56.9 Dark Down 37.6 266.0 Up 06:23:39 - 06:53:39 -1118
Reno 06:38:21 -57.4 Dark Down 37.1 266.6 Up 06:23:21 - 06:53:21 -1132
Carson City 06:38:16 -57.7 Dark Down 37.2 266.9 Up 06:23:16 - 06:53:16 -1168
Yerington 06:38:00 -58.1 Dark Down 36.7 267.4 Up 06:23:00 - 06:53:00 -1176
Gardnerville 06:38:13 -57.9 Dark Down 37.1 267.1 Up 06:23:13 - 06:53:13 -1192
Hawthorne 06:37:42 -58.7 Dark Down 36.4 268.1 Up 06:22:42 - 06:52:42 -1213
Tonopah 06:37:01 -59.7 Dark Down 35.4 269.2 Up 06:22:01 - 06:52:01 -1232
Lee Vining 06:37:41 -58.8 Dark Down 36.8 268.2 Up 06:22:41 - 06:52:41 -1279
Bishop 06:37:15 -59.6 Dark Down 36.3 269.0 Up 06:22:15 - 06:52:15 -1326
Beatty 06:36:34 -60.7 Dark Down 35.2 270.2 Up 06:21:34 - 06:51:34 -1340
Indian Springs 06:36:10 -61.5 Dark Down 34.4 271.0 Up 06:21:10 - 06:51:10 -1351
Henderson 06:35:47 -62.2 Dark Down 33.9 271.7 Up 06:20:47 - 06:50:47 -1391
Patrick 06:35:14 -63.2 Dark Down 33.1 272.7 Up 06:20:14 - 06:50:14 -1431
Kingman/Dolan Springs 06:35:09 -63.3 Dark Down 33.2 272.7 Up 06:20:09 - 06:50:09 -1458
Laughlin/Bullhead City 06:35:19 -63.0 Dark Down 33.6 272.5 Up 06:20:19 - 06:50:19 -1472
Mohave Valley 06:35:19 -63.2 Dark Down 33.6 272.7 Up 06:20:19 - 06:50:19 -1499
Lake Havasu City 06:35:01 -63.6 Dark Down 33.4 273.0 Up 06:20:01 - 06:50:01 -1535
George/Scottsdale 06:34:06 -65.5 Dark Down 31.5 274.7 Up 06:19:06 - 06:49:06 -1559
Parker 06:35:01 -63.9 Dark Down 33.4 273.3 Up 06:20:01 - 06:50:01 -1571
Idyllwild 06:35:39 -62.7 Dark Down 35.2 272.4 Up 06:20:39 - 06:50:39 -1665
Wildwood 06:36:18 -61.4 Dark Down 36.7 271.2 Up 06:21:18 - 06:51:18 -1667
Calipatria 06:35:06 -63.8 Dark Down 34.3 273.3 Up 06:20:06 - 06:50:06 -1703
Yuma 06:34:43 -64.6 Dark Down 33.6 274.0 Up 06:19:43 - 06:49:43 -1728

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 04VU131, (2024/02/10 07:13UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  8.06 103
44Zet Per      03:54:07.9 +31:53:01  2.8 11.80  98
43Ome1Tau      04:09:10.1 +19:36:32  5.5  1.06  98
PPM 119606     04:05:36.8 +19:57:18  8.4  0.45  97
PPM 093259     04:06:38.8 +20:18:10  9.7  0.15  98
04VU131        04:06:06.6 +20:23:14 14.8        98
Positions are for J2000

Event circumstances last updated at 2022/09/27 03:29:39 UT

Marc W. Buie, Southwest Research Institute

RECON