RECON: TNO occultation with 04VY130

Event between 04VY130 and star GA1040:02059281 with event index number of 2569142

Geocentric closest approach at 2028/04/08 05:10:49 UTC

J2000 position of star is 06:34:10.4 +14:34:36
Equinox of date position of star is 06:35:29.4 +14:33:26
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 83 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=23.2

[RECON map]
Object is 31.6 AU from the Sun and 31.8 AU from the Earth.
Apparent velocity is 11.1 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 883 seconds.
The 1-sigma cross-track error in the shadow position is 2493 km.
The sky-plane scale is 23068.2 km/arcsec.

The object has an absolute magnitude Hv=8.0
Diameter=152.8 km assuming a 5% albedo -- 13.6 sec chord
Diameter=62.4 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04VY130, (2028/04/08 05:10UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:42.2 +07:24:36  0.4 11.95  92
Alhena         06:39:20.7 +16:22:22  1.9  2.01  82
PPM 122497     06:28:52.7 +14:52:12  6.2  1.70  85
PPM 122691     06:35:58.4 +14:43:41  7.7  0.18  83
04VY130        06:35:47.1 +14:33:10 13.8        83
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 1.0 sigma about the mid-time.
The median site spacing is 34.7 km RECON observability=1.0 and success probability=9.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:18:04 -26.2 Dark Up 22.4 265.0 Low 05:03:04 - 05:33:04 5876
Kamloops 05:17:30 -21.8 Dark Up 31.6 253.4 Up 05:02:30 - 05:32:30 5646
Kelowna 05:17:37 -22.8 Dark Up 31.3 254.7 Up 05:02:37 - 05:32:37 5570
Peachland 05:17:36 -22.7 Dark Up 31.5 254.5 Up 05:02:36 - 05:32:36 5558
Summerland 05:17:37 -22.9 Dark Up 31.5 254.7 Up 05:02:37 - 05:32:37 5544
Penticton 05:17:38 -23.0 Dark Up 31.4 254.8 Up 05:02:38 - 05:32:38 5538
Oliver 05:17:39 -23.2 Dark Up 31.5 255.0 Up 05:02:39 - 05:32:39 5503
Anarchist Mountain Observatory 05:17:41 -23.5 Dark Up 31.4 255.3 Up 05:02:41 - 05:32:41 5487
Victoria 05:17:25 -21.8 Dark Up 34.2 252.0 Up 05:02:25 - 05:32:25 5426
Okanogan 05:17:42 -23.8 Dark Up 31.7 255.5 Up 05:02:42 - 05:32:42 5422
Brewster 05:17:42 -23.9 Dark Up 31.9 255.5 Up 05:02:42 - 05:32:42 5395
Manson/Chelan 05:17:42 -23.9 Dark Up 32.2 255.3 Up 05:02:42 - 05:32:42 5372
Wenatchee 05:17:43 -24.1 Dark Up 32.5 255.5 Up 05:02:43 - 05:32:43 5324
Ellensburg 05:17:44 -24.3 Dark Up 32.7 255.5 Up 05:02:44 - 05:32:44 5282
Yakima 05:17:45 -24.6 Dark Up 32.8 255.8 Up 05:02:45 - 05:32:45 5241
Toppenish/White Swan 05:17:47 -24.8 Dark Up 32.7 256.1 Up 05:02:47 - 05:32:47 5220
PNWRO 05:17:53 -25.8 Dark Up 31.8 257.5 Up 05:02:53 - 05:32:53 5189
The Dalles 05:17:46 -25.0 Dark Up 33.5 255.9 Up 05:02:46 - 05:32:46 5139
Maupin 05:17:48 -25.3 Dark Up 33.5 256.2 Up 05:02:48 - 05:32:48 5096
Sisters 05:17:49 -25.6 Dark Up 34.0 256.4 Up 05:02:49 - 05:32:49 5005
Bend 05:17:50 -25.9 Dark Up 33.9 256.8 Up 05:02:50 - 05:32:50 4981
Oregon Observatory 05:17:51 -26.0 Dark Up 34.0 256.8 Up 05:02:51 - 05:32:51 4963
Chiloquin 05:17:53 -26.6 Dark Up 34.6 257.4 Up 05:02:53 - 05:32:53 4826
Klamath Falls 05:17:53 -26.9 Dark Up 34.6 257.6 Up 05:02:53 - 05:32:53 4790
Cedarville 05:18:04 -28.3 Dark Up 33.6 259.4 Up 05:03:04 - 05:33:04 4724
Dunrhomin 05:19:00 -36.7 Dark Up 22.2 270.6 Low 05:04:00 - 05:34:00 4717
Nikitin 05:19:01 -36.9 Dark Up 22.2 270.7 Low 05:04:01 - 05:34:01 4698
CU-SBO 05:19:02 -36.9 Dark Up 22.3 270.6 Low 05:04:02 - 05:34:02 4690
Fall River/Burney 05:18:00 -27.9 Dark Up 34.6 258.8 Up 05:03:00 - 05:33:00 4669
Gimple 05:18:04 -28.8 Dark Up 34.3 259.8 Up 05:03:04 - 05:33:04 4575
Greenville 05:18:05 -28.8 Dark Up 34.4 259.7 Up 05:03:05 - 05:33:05 4575
Quincy 05:18:04 -28.9 Dark Up 34.4 259.9 Up 05:03:04 - 05:33:04 4554
Portola 05:18:08 -29.3 Dark Up 34.1 260.3 Up 05:03:08 - 05:33:08 4543
Reno 05:18:11 -29.8 Dark Up 33.6 261.0 Up 05:03:11 - 05:33:11 4517
Carson City 05:18:12 -30.1 Dark Up 33.7 261.2 Up 05:03:12 - 05:33:12 4480
Yerington 05:18:16 -30.6 Dark Up 33.2 261.8 Up 05:03:16 - 05:33:16 4462
Gardnerville 05:18:13 -30.3 Dark Up 33.7 261.4 Up 05:03:13 - 05:33:13 4454
Hawthorne 05:18:19 -31.2 Dark Up 32.8 262.5 Up 05:03:19 - 05:33:19 4415
Lee Vining 05:18:18 -31.3 Dark Up 33.3 262.5 Up 05:03:18 - 05:33:18 4353
Bishop 05:18:24 -32.2 Dark Up 32.8 263.4 Up 05:03:24 - 05:33:24 4293
Beatty 05:18:32 -33.4 Dark Up 31.5 264.8 Up 05:03:32 - 05:33:32 4254
Patrick 05:18:48 -36.2 Dark Up 29.2 267.5 Low 05:03:48 - 05:33:48 4116
Laughlin/Bullhead City 05:18:46 -36.0 Dark Up 29.8 267.2 Low 05:03:46 - 05:33:46 4084
Lake Havasu City 05:18:48 -36.6 Dark Up 29.6 267.7 Low 05:03:48 - 05:33:48 4014
George/Scottsdale 05:19:00 -38.6 Dark Up 27.6 269.6 Low 05:04:00 - 05:34:00 3952
Wildwood 05:18:31 -34.2 Dark Up 33.2 265.4 Up 05:03:31 - 05:33:31 3941
Idyllwild 05:18:39 -35.6 Dark Up 31.7 266.8 Up 05:03:39 - 05:33:39 3914
Calipatria 05:18:46 -36.8 Dark Up 30.7 267.8 Up 05:03:46 - 05:33:46 3856
Yuma 05:18:50 -37.7 Dark Up 29.9 268.6 Low 05:03:50 - 05:33:50 3817

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 04VY130, (2028/04/08 05:10UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.95  92
Alhena         06:37:42.8 +16:23:56  1.9  2.01  82
PPM 122497     06:27:15.8 +14:53:21  6.2  1.70  85
PPM 122691     06:34:21.6 +14:45:08  7.7  0.18  83
04VY130        06:34:10.4 +14:34:36 13.8        83
Positions are for J2000

Event circumstances last updated at 2023/02/07 03:48:01 UT

Marc W. Buie, Southwest Research Institute

RECON