RECON: TNO occultation with 307463

Event between (307463) 02VU130 and star GA1120:02095685 with event index number of 2529854

Geocentric closest approach at 2028/12/22 05:34:18 UTC

J2000 position of star is 06:24:54.2 +23:07:40
Equinox of date position of star is 06:26:18.4 +23:06:48
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 113 degrees from the moon. Moon is 35% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 37.9 AU from the Sun and 36.9 AU from the Earth.
Apparent velocity is 25.3 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 422 seconds.
The 1-sigma cross-track error in the shadow position is 2023 km.
The sky-plane scale is 26747.5 km/arcsec.

The object has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 15.5 sec chord
Diameter=162.5 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 307463, (2028/12/22 05:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.5 +07:24:36  0.4 17.27 107
Alhena         06:39:23.1 +16:22:19  1.9  7.37 117
PPM 095944     06:27:18.7 +23:18:31  6.0  0.25 113
PPM 095937     06:27:06.3 +23:02:19  9.0  0.12 113
307463         06:26:39.7 +23:06:35 16.8       113
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 2.1 sigma about the mid-time.
The median site spacing is 35.6 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:36:10 -51.1 Dark Up 47.9 115.3 Up 05:21:10 - 05:51:10 10855
Sleaford 05:35:35 -56.9 Dark Down 54.5 134.2 Up 05:20:35 - 05:50:35 10800
Kelowna 05:36:11 -52.0 Dark Up 48.8 115.4 Up 05:21:11 - 05:51:11 10765
Peachland 05:36:11 -51.9 Dark Up 48.7 115.0 Up 05:21:11 - 05:51:11 10759
Summerland 05:36:11 -52.0 Dark Up 48.8 114.9 Up 05:21:11 - 05:51:11 10744
Penticton 05:36:11 -52.1 Dark Up 48.9 115.0 Up 05:21:11 - 05:51:11 10736
Victoria 05:36:22 -50.4 Dark Up 46.9 110.0 Up 05:21:22 - 05:51:22 10707
Oliver 05:36:12 -52.3 Dark Up 49.0 114.6 Up 05:21:12 - 05:51:12 10703
Anarchist Mountain Observatory 05:36:12 -52.5 Dark Up 49.2 114.6 Up 05:21:12 - 05:51:12 10684
Okanogan 05:36:14 -52.7 Dark Up 49.3 113.7 Up 05:21:14 - 05:51:14 10626
Brewster 05:36:15 -52.7 Dark Up 49.3 113.2 Up 05:21:15 - 05:51:15 10603
Manson/Chelan 05:36:16 -52.6 Dark Up 49.2 112.6 Up 05:21:16 - 05:51:16 10590
Wenatchee 05:36:18 -52.7 Dark Up 49.3 111.9 Up 05:21:18 - 05:51:18 10547
Ellensburg 05:36:19 -52.8 Dark Up 49.3 111.3 Up 05:21:19 - 05:51:19 10512
Yakima 05:36:20 -52.9 Dark Up 49.4 110.8 Up 05:21:20 - 05:51:20 10473
Toppenish/White Swan 05:36:19 -53.1 Dark Up 49.6 110.7 Up 05:21:19 - 05:51:19 10449
The Dalles 05:36:23 -53.0 Dark Up 49.4 109.1 Up 05:21:23 - 05:51:23 10388
PNWRO 05:36:17 -54.2 Dark Up 50.7 111.9 Up 05:21:17 - 05:51:17 10388
Maupin 05:36:23 -53.2 Dark Up 49.6 108.8 Up 05:21:23 - 05:51:23 10346
Sisters 05:36:26 -53.2 Dark Up 49.5 107.3 Up 05:21:26 - 05:51:26 10269
Bend 05:36:26 -53.5 Dark Up 49.8 107.3 Up 05:21:26 - 05:51:26 10241
Oregon Observatory 05:36:27 -53.5 Dark Up 49.7 107.0 Up 05:21:27 - 05:51:27 10226
Chiloquin 05:36:29 -53.7 Dark Up 49.8 105.1 Up 05:21:29 - 05:51:29 10105
Klamath Falls 05:36:31 -53.9 Dark Up 49.9 104.8 Up 05:21:31 - 05:51:31 10069
Cedarville 05:36:28 -55.2 Dark Up 51.3 105.4 Up 05:21:28 - 05:51:28 9969
Fall River/Burney 05:36:32 -54.5 Dark Up 50.5 103.8 Up 05:21:32 - 05:51:32 9944
Greenville 05:36:32 -55.1 Dark Up 51.1 103.1 Up 05:21:32 - 05:51:32 9844
Gimple 05:36:32 -55.2 Dark Up 51.1 103.1 Up 05:21:32 - 05:51:32 9842
Quincy 05:36:33 -55.2 Dark Up 51.1 102.8 Up 05:21:33 - 05:51:33 9823
Portola 05:36:32 -55.6 Dark Up 51.5 103.1 Up 05:21:32 - 05:51:32 9801
Reno 05:36:31 -56.1 Dark Up 52.0 103.3 Up 05:21:31 - 05:51:31 9762
Carson City 05:36:31 -56.2 Dark Up 52.1 102.9 Up 05:21:31 - 05:51:31 9725
Gardnerville 05:36:31 -56.3 Dark Up 52.2 102.6 Up 05:21:31 - 05:51:31 9699
Yerington 05:36:29 -56.8 Dark Up 52.7 103.2 Up 05:21:29 - 05:51:29 9693
Hawthorne 05:36:29 -57.3 Dark Up 53.2 103.0 Up 05:21:29 - 05:51:29 9635
Dunrhomin 05:35:48 -65.7 Dark Up 62.1 120.0 Up 05:20:48 - 05:50:48 9608
Nikitin 05:35:48 -65.8 Dark Up 62.2 119.7 Up 05:20:48 - 05:50:48 9589
Lee Vining 05:36:31 -57.1 Dark Up 52.9 101.9 Up 05:21:31 - 05:51:31 9587
CU-SBO 05:35:49 -65.8 Dark Up 62.2 119.4 Up 05:20:49 - 05:50:49 9583
Bishop 05:36:30 -57.8 Dark Up 53.6 101.7 Up 05:21:30 - 05:51:30 9511
Beatty 05:36:26 -59.2 Dark Up 55.0 102.4 Up 05:21:26 - 05:51:26 9432
Patrick 05:36:20 -61.8 Dark Up 57.5 102.7 Up 05:21:20 - 05:51:20 9225
Laughlin/Bullhead City 05:36:23 -61.4 Dark Up 57.0 101.7 Up 05:21:23 - 05:51:23 9211
Wildwood 05:36:35 -58.4 Dark Up 54.0 97.2 Up 05:21:35 - 05:51:35 9174
Lake Havasu City 05:36:22 -61.7 Dark Up 57.4 100.9 Up 05:21:22 - 05:51:22 9136
Idyllwild 05:36:30 -60.0 Dark Up 55.6 98.0 Up 05:21:30 - 05:51:30 9100
Calipatria 05:36:28 -61.1 Dark Up 56.6 97.9 Up 05:21:28 - 05:51:28 9012
George/Scottsdale 05:36:15 -63.9 Dark Up 59.5 101.7 Up 05:21:15 - 05:51:15 9011
Yuma 05:36:26 -61.9 Dark Up 57.4 97.9 Up 05:21:26 - 05:51:26 8950

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, (2028/12/22 05:34UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.27 107
Alhena         06:37:42.8 +16:23:56  1.9  7.37 117
PPM 095944     06:25:33.0 +23:19:37  6.0  0.25 113
PPM 095937     06:25:20.8 +23:03:25  9.0  0.12 113
307463         06:24:54.2 +23:07:40 16.8       113
Positions are for J2000

Event circumstances last updated at 2023/02/14 03:52:46 UT

Marc W. Buie, Southwest Research Institute

RECON