RECON: TNO occultation with 307463

Event between (307463) 02VU130 and star GA1120:01951483 with event index number of 1835935

Geocentric closest approach at 2028/01/23 06:00:19 UTC

J2000 position of star is 06:15:07.3 +23:14:25
Equinox of date position of star is 06:16:31.5 +23:13:53
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 171 degrees from the moon. Moon is 10% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 38.1 AU from the Sun and 37.2 AU from the Earth.
Apparent velocity is 21.8 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 410 seconds.
The 1-sigma cross-track error in the shadow position is 1789 km.
The sky-plane scale is 26974.4 km/arcsec.

The object has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 18.0 sec chord
Diameter=162.5 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 307463, (2028/01/23 06:05UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:41.5 +07:24:36  0.4 16.54 161
Alhena         06:39:19.9 +16:22:22  1.9  8.66 163
9 Gem          06:18:41.4 +23:43:44  6.1  0.66 171
PPM 095651     06:16:41.1 +23:13:59  9.8  0.03 171
307463         06:16:49.6 +23:13:46 16.3       171
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 2.2 sigma about the mid-time.
The median site spacing is 36.0 km RECON observability=1.0 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:59:45 -54.3 Dark Down 59.6 202.9 Up 05:44:45 - 06:14:45 8911
Kamloops 06:00:31 -49.4 Dark Down 62.5 176.2 Up 05:45:31 - 06:15:31 8715
Kelowna 06:00:27 -50.3 Dark Down 63.4 177.9 Up 05:45:27 - 06:15:27 8636
Peachland 06:00:28 -50.2 Dark Down 63.5 177.3 Up 05:45:28 - 06:15:28 8624
Summerland 06:00:28 -50.4 Dark Down 63.6 177.5 Up 05:45:28 - 06:15:28 8609
Penticton 06:00:28 -50.5 Dark Down 63.7 177.7 Up 05:45:28 - 06:15:28 8603
Oliver 06:00:28 -50.7 Dark Down 64.0 177.7 Up 05:45:28 - 06:15:28 8568
Anarchist Mountain Observatory 06:00:27 -50.9 Dark Down 64.2 178.1 Up 05:45:27 - 06:15:27 8551
Victoria 06:00:41 -49.0 Dark Down 64.4 169.5 Up 05:45:41 - 06:15:41 8501
Okanogan 06:00:28 -51.2 Dark Down 64.9 177.5 Up 05:45:28 - 06:15:28 8486
Brewster 06:00:29 -51.2 Dark Down 65.1 177.1 Up 05:45:29 - 06:15:29 8458
Manson/Chelan 06:00:30 -51.1 Dark Down 65.3 176.3 Up 05:45:30 - 06:15:30 8437
Wenatchee 06:00:30 -51.3 Dark Down 65.8 175.8 Up 05:45:30 - 06:15:30 8389
Ellensburg 06:00:31 -51.4 Dark Down 66.2 175.3 Up 05:45:31 - 06:15:31 8346
Yakima 06:00:31 -51.6 Dark Down 66.6 175.1 Up 05:45:31 - 06:15:31 8305
Toppenish/White Swan 06:00:31 -51.8 Dark Down 66.8 175.5 Up 05:45:31 - 06:15:31 8283
PNWRO 06:00:26 -52.9 Dark Down 67.2 178.9 Up 05:45:26 - 06:15:26 8247
The Dalles 06:00:34 -51.8 Dark Down 67.5 173.5 Up 05:45:34 - 06:15:34 8203
Maupin 06:00:33 -52.1 Dark Down 68.0 173.6 Up 05:45:33 - 06:15:33 8160
Sisters 06:00:35 -52.2 Dark Down 68.8 172.1 Up 05:45:35 - 06:15:35 8069
Bend 06:00:34 -52.5 Dark Down 69.1 172.7 Up 05:45:34 - 06:15:34 8044
Oregon Observatory 06:00:34 -52.5 Dark Down 69.2 172.3 Up 05:45:34 - 06:15:34 8026
Chiloquin 06:00:36 -52.9 Dark Down 70.5 170.7 Up 05:45:36 - 06:15:36 7888
Klamath Falls 06:00:36 -53.1 Dark Down 70.8 170.7 Up 05:45:36 - 06:15:36 7853
Cedarville 06:00:30 -54.5 Dark Down 71.7 175.0 Up 05:45:30 - 06:15:30 7780
Fall River/Burney 06:00:35 -53.9 Dark Down 72.0 171.3 Up 05:45:35 - 06:15:35 7728
Dunrhomin 05:59:32 -64.1 Dark Down 69.7 216.8 Up 05:44:32 - 06:14:32 7722
Nikitin 05:59:32 -64.2 Dark Down 69.9 217.1 Up 05:44:32 - 06:14:32 7703
CU-SBO 05:59:33 -64.2 Dark Down 70.0 217.0 Up 05:44:33 - 06:14:33 7695
Greenville 06:00:33 -54.6 Dark Down 73.0 172.2 Up 05:45:33 - 06:15:33 7632
Gimple 06:00:33 -54.6 Dark Down 73.0 172.5 Up 05:45:33 - 06:15:33 7632
Quincy 06:00:33 -54.7 Dark Down 73.2 172.1 Up 05:45:33 - 06:15:33 7611
Portola 06:00:31 -55.0 Dark Down 73.3 173.6 Up 05:45:31 - 06:15:31 7598
Reno 06:00:29 -55.6 Dark Down 73.7 175.5 Up 05:45:29 - 06:15:29 7570
Carson City 06:00:29 -55.8 Dark Down 74.0 175.5 Up 05:45:29 - 06:15:29 7532
Yerington 06:00:26 -56.3 Dark Down 74.2 177.6 Up 05:45:26 - 06:15:26 7512
Gardnerville 06:00:28 -55.9 Dark Down 74.3 175.6 Up 05:45:28 - 06:15:28 7506
Hawthorne 06:00:24 -56.9 Dark Down 74.7 179.3 Up 05:45:24 - 06:15:24 7463
Lee Vining 06:00:26 -56.8 Dark Down 75.3 177.5 Up 05:45:26 - 06:15:26 7402
Bishop 06:00:23 -57.5 Dark Down 75.9 180.1 Up 05:45:23 - 06:15:23 7339
Beatty 06:00:15 -58.9 Dark Down 76.3 186.4 Up 05:45:15 - 06:15:15 7293
Patrick 06:00:04 -61.6 Dark Down 77.2 199.0 Up 05:45:04 - 06:15:04 7143
Laughlin/Bullhead City 06:00:07 -61.2 Dark Down 77.6 196.5 Up 05:45:07 - 06:15:07 7113
Lake Havasu City 06:00:05 -61.7 Dark Down 78.2 198.5 Up 05:45:05 - 06:15:05 7041
Wildwood 06:00:23 -58.6 Dark Down 79.1 179.2 Up 05:45:23 - 06:15:23 6984
George/Scottsdale 05:59:55 -63.8 Dark Down 78.1 210.1 Up 05:44:55 - 06:14:55 6970
Idyllwild 06:00:15 -60.2 Dark Down 79.4 188.5 Up 05:45:15 - 06:15:15 6950
Calipatria 06:00:10 -61.3 Dark Down 79.8 195.0 Up 05:45:10 - 06:15:10 6887
Yuma 06:00:06 -62.1 Dark Down 80.0 200.1 Up 05:45:06 - 06:15:06 6844

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, (2028/01/23 06:05UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.54 161
Alhena         06:37:42.8 +16:23:57  1.9  8.66 163
9 Gem          06:16:58.7 +23:44:27  6.1  0.66 171
PPM 095651     06:14:58.7 +23:14:38  9.8  0.03 171
307463         06:15:07.3 +23:14:25 16.3       171
Positions are for J2000

Event circumstances last updated at 2023/02/06 03:27:09 UT

Marc W. Buie, Southwest Research Institute

RECON