RECON: TNO occultation with 470308

Event between (470308) 07JH43 and star GA0600:19649881 with event index number of 2220811

Geocentric closest approach at 2027/06/02 07:14:28 UTC

J2000 position of star is 17:18:49.6 -28:26:24
Equinox of date position of star is 17:20:22.3 -28:27:50
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon. Moon is 9% illuminated.
Apparent brightness V=20.9

[RECON map]
Object is 40.5 AU from the Sun and 39.5 AU from the Earth.
Apparent velocity is 24.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 129 seconds.
The 1-sigma cross-track error in the shadow position is 1835 km.
The sky-plane scale is 28655.6 km/arcsec.

The object has an absolute magnitude Hv=4.8
Diameter=758.6 km assuming a 5% albedo -- 26.6 sec chord
Diameter=309.7 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470308, (2027/06/02 07:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.6 -26:29:25  0.9 11.14 148
26Eps Sco      16:51:57.0 -34:20:24  2.3  8.47 142
43 Oph         17:25:05.3 -28:10:00  5.1  1.04 136
PPM 266646     17:19:10.9 -27:47:40  8.1  0.74 137
PPM 266685     17:21:09.4 -28:32:31  9.4  0.15 137
470308         17:20:33.5 -28:28:00 16.2       137
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 5.0 sigma about the mid-time.
The median site spacing is 16.0 km RECON observability=0.3 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:14:45 -15.7 AT Down 9.3 174.3 Really Low 07:03:30 - 07:26:00 8779
Kamloops 07:15:25 -16.5 AT Down 8.8 161.7 Really Low 07:04:10 - 07:26:40 8642
Kelowna 07:15:23 -17.4 AT Down 9.7 162.4 Really Low 07:04:08 - 07:26:38 8633
Peachland 07:15:24 -17.5 AT Down 9.8 162.2 Really Low 07:04:09 - 07:26:39 8627
Summerland 07:15:25 -17.6 AT Down 10.0 162.2 Really Low 07:04:10 - 07:26:40 8624
Penticton 07:15:24 -17.7 AT Down 10.0 162.3 Really Low 07:04:09 - 07:26:39 8623
Oliver 07:15:25 -18.1 Dark Down 10.4 162.3 Really Low 07:04:10 - 07:26:40 8614
Anarchist Mountain Observatory 07:15:25 -18.3 Dark Down 10.6 162.5 Really Low 07:04:10 - 07:26:40 8613
Okanogan 07:15:26 -18.9 Dark Down 11.2 162.2 Really Low 07:04:11 - 07:26:41 8592
Brewster 07:15:27 -19.1 Dark Down 11.4 162.1 Really Low 07:04:12 - 07:26:42 8582
Manson/Chelan 07:15:28 -19.3 Dark Down 11.5 161.7 Really Low 07:04:13 - 07:26:43 8572
Wenatchee 07:15:29 -19.7 Dark Down 11.9 161.5 Really Low 07:04:14 - 07:26:44 8556
Victoria 07:15:36 -18.2 Dark Down 10.2 159.0 Really Low 07:04:21 - 07:26:51 8548
Ellensburg 07:15:30 -20.1 Dark Down 12.3 161.3 Really Low 07:04:15 - 07:26:45 8541
PNWRO 07:15:26 -21.3 Dark Down 13.5 162.7 Really Low 07:04:11 - 07:26:41 8530
Yakima 07:15:30 -20.5 Dark Down 12.6 161.3 Really Low 07:04:15 - 07:26:45 8528
Toppenish/White Swan 07:15:30 -20.7 Dark Down 12.9 161.4 Really Low 07:04:15 - 07:26:45 8524
The Dalles 07:15:34 -21.4 Dark Down 13.4 160.7 Really Low 07:04:19 - 07:26:49 8488
Maupin 07:15:33 -21.8 Dark Down 13.9 160.7 Really Low 07:04:18 - 07:26:48 8476
Sisters 07:15:37 -22.6 Dark Down 14.6 160.2 Really Low 07:04:22 - 07:26:52 8440
Bend 07:15:35 -22.9 Dark Down 14.9 160.4 Really Low 07:04:20 - 07:26:50 8435
Dunrhomin 07:14:47 -27.5 Dark Down 21.1 174.7 Low 07:03:32 - 07:26:02 8432
Oregon Observatory 07:15:37 -23.0 Dark Down 15.0 160.3 Really Low 07:04:22 - 07:26:52 8427
Nikitin 07:14:47 -27.6 Dark Down 21.3 174.7 Low 07:03:32 - 07:26:02 8425
CU-SBO 07:14:48 -27.7 Dark Down 21.3 174.6 Low 07:03:33 - 07:26:03 8422
Chiloquin 07:15:38 -24.3 Dark Down 16.1 159.8 Really Low 07:04:23 - 07:26:53 8372
Klamath Falls 07:15:38 -24.6 Dark Down 16.5 159.9 Really Low 07:04:23 - 07:26:53 8360
Cedarville 07:15:35 -25.5 Dark Down 17.5 161.2 Really Low 07:04:20 - 07:26:50 8355
Fall River/Burney 07:15:38 -25.8 Dark Down 17.7 160.1 Really Low 07:04:23 - 07:26:53 8318
Gimple 07:15:38 -26.8 Dark Down 18.7 160.5 Really Low 07:04:23 - 07:26:53 8287
Greenville 07:15:38 -26.8 Dark Down 18.6 160.4 Really Low 07:04:23 - 07:26:53 8286
Portola 07:15:38 -27.2 Dark Down 19.1 160.8 Really Low 07:04:23 - 07:26:53 8279
Quincy 07:15:38 -27.0 Dark Down 18.8 160.4 Really Low 07:04:23 - 07:26:53 8278
Reno 07:15:35 -27.5 Dark Down 19.5 161.3 Really Low 07:04:20 - 07:26:50 8277
Carson City 07:15:36 -27.9 Dark Down 19.8 161.3 Really Low 07:04:21 - 07:26:51 8261
Yerington 07:15:35 -28.2 Dark Down 20.2 161.8 Low 07:04:20 - 07:26:50 8261
Gardnerville 07:15:36 -28.1 Dark Down 20.1 161.3 Low 07:04:21 - 07:26:51 8251
Hawthorne 07:15:32 -28.7 Dark Down 20.7 162.3 Low 07:04:17 - 07:26:47 8247
Lee Vining 07:15:36 -29.2 Dark Down 21.2 161.8 Low 07:04:21 - 07:26:51 8216
Bishop 07:15:34 -29.9 Dark Down 21.9 162.3 Low 07:04:19 - 07:26:49 8197
Beatty 07:15:28 -30.5 Dark Down 22.7 163.8 Low 07:04:13 - 07:26:43 8195
Patrick 07:15:19 -32.3 Dark Down 24.8 166.3 Low 07:04:04 - 07:26:34 8155
Laughlin/Bullhead City 07:15:23 -32.5 Dark Down 24.9 165.6 Low 07:04:08 - 07:26:38 8134
Lake Havasu City 07:15:21 -33.1 Dark Down 25.6 165.7 Low 07:04:06 - 07:26:36 8103
George/Scottsdale 07:15:14 -34.1 Dark Down 26.8 168.0 Low 07:03:59 - 07:26:29 8087
Idyllwild 07:15:30 -33.7 Dark Down 25.8 163.4 Low 07:04:15 - 07:26:45 8037
Wildwood 07:15:37 -33.1 Dark Down 25.0 161.7 Low 07:04:22 - 07:26:52 8030
Calipatria 07:15:27 -34.4 Dark Down 26.6 164.4 Low 07:04:12 - 07:26:42 8017
Yuma 07:15:24 -34.9 Dark Down 27.2 165.2 Low 07:04:09 - 07:26:39 8004

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 470308, (2027/06/02 07:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.14 148
26Eps Sco      16:50:08.8 -34:17:41  2.3  8.47 142
43 Oph         17:23:21.6 -28:08:35  5.1  1.04 136
PPM 266646     17:17:27.6 -27:46:01  8.1  0.74 137
PPM 266685     17:19:25.5 -28:30:56  9.4  0.15 137
470308         17:18:49.6 -28:26:24 16.2       137
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:28:33 UT

Marc W. Buie, Southwest Research Institute

RECON