RECON: TNO occultation with 307463

Event between (307463) 02VU130 and star GA1120:01554696 with event index number of 1391019

Geocentric closest approach at 2025/02/28 06:14:21 UTC

J2000 position of star is 05:53:14.9 +23:22:59
Equinox of date position of star is 05:54:39.1 +23:23:11
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 105 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 38.7 AU from the Sun and 38.3 AU from the Earth.
Apparent velocity is 5.4 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 962 seconds.
The 1-sigma cross-track error in the shadow position is 2764 km.
The sky-plane scale is 27811.3 km/arcsec.

The object has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 72.3 sec chord
Diameter=162.5 km assuming a 30% albedo -- 29.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 307463, (2025/02/28 06:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:32.1 +07:24:35  0.4 15.98 105
Alnath         05:27:53.1 +28:37:35  1.6  7.99 100
PPM 095124     05:58:28.6 +24:15:04  5.8  1.21 106
PPM 095035     05:55:06.1 +24:17:25  8.1  0.91 105
PPM 094989     05:53:22.6 +23:23:13  8.7  0.32 105
PPM 095038     05:55:07.4 +23:19:55 10.2  0.10 105
307463         05:54:46.8 +23:23:12 16.7       106
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 0.9 sigma about the mid-time.
The median site spacing is 29.2 km RECON observability=1.0 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:03:50 -43.4 Dark Down 39.5 257.2 Up 05:48:50 - 06:18:50 7919
Kamloops 06:05:40 -39.6 Dark Down 48.2 244.8 Up 05:50:40 - 06:20:40 7526
Kelowna 06:05:23 -40.6 Dark Down 48.1 246.5 Up 05:50:23 - 06:20:23 7465
Peachland 06:05:25 -40.5 Dark Down 48.3 246.3 Up 05:50:25 - 06:20:25 7450
Summerland 06:05:21 -40.7 Dark Down 48.3 246.5 Up 05:50:21 - 06:20:21 7437
Penticton 06:05:21 -40.8 Dark Down 48.3 246.7 Up 05:50:21 - 06:20:21 7433
Oliver 06:05:19 -41.0 Dark Down 48.4 247.1 Up 05:50:19 - 06:20:19 7400
Anarchist Mountain Observatory 06:05:15 -41.2 Dark Down 48.4 247.4 Up 05:50:15 - 06:20:15 7387
Okanogan 06:05:11 -41.6 Dark Down 48.7 247.9 Up 05:50:11 - 06:20:11 7322
Brewster 06:05:11 -41.7 Dark Down 49.0 247.9 Up 05:50:11 - 06:20:11 7293
Victoria 06:05:52 -39.7 Dark Down 50.9 243.8 Up 05:50:52 - 06:20:52 7274
Manson/Chelan 06:05:09 -41.7 Dark Down 49.3 247.8 Up 05:50:09 - 06:20:09 7267
Wenatchee 06:05:09 -41.9 Dark Down 49.6 248.1 Up 05:50:09 - 06:20:09 7219
Ellensburg 06:05:07 -42.1 Dark Down 49.9 248.3 Up 05:50:07 - 06:20:07 7175
Yakima 06:05:05 -42.4 Dark Down 50.0 248.8 Up 05:50:05 - 06:20:05 7136
Toppenish/White Swan 06:05:01 -42.6 Dark Down 50.0 249.2 Up 05:50:01 - 06:20:01 7118
PNWRO 06:04:40 -43.6 Dark Down 49.2 251.0 Up 05:49:40 - 06:19:40 7109
The Dalles 06:05:02 -42.7 Dark Down 50.8 249.2 Up 05:50:02 - 06:20:02 7028
Maupin 06:04:56 -43.1 Dark Down 50.9 249.8 Up 05:49:56 - 06:19:56 6989
Sisters 06:04:56 -43.4 Dark Down 51.5 250.3 Up 05:49:56 - 06:19:56 6894
Bend 06:04:51 -43.7 Dark Down 51.4 250.9 Up 05:49:51 - 06:19:51 6876
Oregon Observatory 06:04:51 -43.7 Dark Down 51.6 250.9 Up 05:49:51 - 06:19:51 6856
Dunrhomin 06:01:29 -53.9 Dark Down 41.0 267.3 Up 05:46:29 - 06:16:29 6853
Nikitin 06:01:24 -54.0 Dark Down 41.0 267.4 Up 05:46:24 - 06:16:24 6835
CU-SBO 06:01:24 -54.0 Dark Down 41.1 267.4 Up 05:46:24 - 06:16:24 6826
Chiloquin 06:04:46 -44.3 Dark Down 52.3 252.1 Up 05:49:46 - 06:19:46 6718
Klamath Falls 06:04:44 -44.6 Dark Down 52.4 252.6 Up 05:49:44 - 06:19:44 6685
Cedarville 06:04:18 -45.9 Dark Down 51.5 254.8 Up 05:49:18 - 06:19:18 6645
Fall River/Burney 06:04:28 -45.5 Dark Down 52.5 254.4 Up 05:49:28 - 06:19:28 6573
Gimple 06:04:14 -46.4 Dark Down 52.4 255.9 Up 05:49:14 - 06:19:14 6491
Greenville 06:04:15 -46.3 Dark Down 52.4 255.8 Up 05:49:15 - 06:19:15 6490
Quincy 06:04:14 -46.4 Dark Down 52.5 256.1 Up 05:49:14 - 06:19:14 6469
Portola 06:04:08 -46.8 Dark Down 52.2 256.7 Up 05:49:08 - 06:19:08 6466
Reno 06:03:58 -47.3 Dark Down 51.8 257.5 Up 05:48:58 - 06:18:58 6451
Carson City 06:03:53 -47.6 Dark Down 51.8 258.0 Up 05:48:53 - 06:18:53 6415
Yerington 06:03:45 -48.0 Dark Down 51.4 258.7 Up 05:48:45 - 06:18:45 6408
Gardnerville 06:03:50 -47.7 Dark Down 51.9 258.3 Up 05:48:50 - 06:18:50 6391
Hawthorne 06:03:37 -48.6 Dark Down 51.1 259.7 Up 05:48:37 - 06:18:37 6371
Lee Vining 06:03:37 -48.7 Dark Down 51.6 260.0 Up 05:48:37 - 06:18:37 6304
Bishop 06:03:25 -49.5 Dark Down 51.2 261.2 Up 05:48:25 - 06:18:25 6257
Beatty 06:03:00 -50.7 Dark Down 50.0 262.9 Up 05:48:00 - 06:18:00 6244
Patrick 06:02:15 -53.3 Dark Down 48.0 266.5 Up 05:47:15 - 06:17:15 6157
Laughlin/Bullhead City 06:02:24 -53.1 Dark Down 48.6 266.3 Up 05:47:24 - 06:17:24 6115
Lake Havasu City 06:02:15 -53.7 Dark Down 48.4 267.2 Up 05:47:15 - 06:17:15 6052
George/Scottsdale 06:01:41 -55.6 Dark Down 46.5 269.4 Up 05:46:41 - 06:16:41 6031
Idyllwild 06:02:38 -52.7 Dark Down 50.3 266.7 Up 05:47:38 - 06:17:38 5918
Wildwood 06:03:05 -51.3 Dark Down 51.8 265.1 Up 05:48:05 - 06:18:05 5914
Calipatria 06:02:19 -53.8 Dark Down 49.5 268.1 Up 05:47:19 - 06:17:19 5882
Yuma 06:02:04 -54.6 Dark Down 48.8 269.0 Up 05:47:04 - 06:17:04 5858

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 307463, (2025/02/28 06:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.98 105
Alnath         05:26:17.6 +28:36:23  1.6  7.99 100
PPM 095124     05:56:56.1 +24:14:59  5.8  1.21 106
PPM 095035     05:53:33.6 +24:17:13  8.1  0.91 105
PPM 094989     05:51:50.7 +23:22:57  8.7  0.32 105
PPM 095038     05:53:35.5 +23:19:42 10.2  0.10 105
307463         05:53:14.9 +23:22:59 16.7       105
Positions are for J2000

Event circumstances last updated at 2023/01/19 03:24:34 UT

Marc W. Buie, Southwest Research Institute

RECON