RECON: TNO occultation with 578992

Event between (578992) 14JL80 and star GA0700:11445873 with event index number of 2555304

Geocentric closest approach at 2027/05/06 09:20:57 UTC

J2000 position of star is 17:30:11.8 -18:32:08
Equinox of date position of star is 17:31:38.0 -18:33:10
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 28.6 AU from the Sun and 27.8 AU from the Earth.
Apparent velocity is 16.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 1038 km.
The sky-plane scale is 20134.4 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 11.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 578992, (2027/05/06 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.3 -26:29:25  0.9 16.09 155
35Eta Oph      17:11:56.9 -15:45:25  2.6  5.51 145
PPM 233026     17:26:13.2 -18:28:07  6.4  1.33 142
PPM 233265     17:36:09.4 -18:14:14  7.4  1.08 140
PPM 233140     17:31:03.0 -18:41:02  9.4  0.22 141
578992         17:31:48.1 -18:33:17 16.6       140
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 0.0 km RECON observability=0.9 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 09:21:54 -14.8 AT Down 19.3 176.0 Really Low 09:11:14 - 09:32:34 7989
Kamloops 09:22:50 -20.3 Dark Down 19.0 161.8 Really Low 09:12:10 - 09:33:30 7763
Kelowna 09:22:48 -20.8 Dark Down 19.9 162.5 Really Low 09:12:08 - 09:33:28 7740
Peachland 09:22:50 -21.0 Dark Down 20.0 162.2 Really Low 09:12:10 - 09:33:30 7731
Summerland 09:22:49 -21.1 Dark Down 20.1 162.3 Low 09:12:09 - 09:33:29 7725
Penticton 09:22:49 -21.1 Dark Down 20.2 162.4 Low 09:12:09 - 09:33:29 7724
Oliver 09:22:49 -21.5 Dark Down 20.5 162.4 Low 09:12:09 - 09:33:29 7708
Anarchist Mountain Observatory 09:22:49 -21.6 Dark Down 20.7 162.6 Low 09:12:09 - 09:33:29 7703
Okanogan 09:22:50 -22.2 Dark Down 21.3 162.3 Low 09:12:10 - 09:33:30 7669
Brewster 09:22:51 -22.5 Dark Down 21.5 162.0 Low 09:12:11 - 09:33:31 7653
Manson/Chelan 09:22:53 -22.8 Dark Down 21.7 161.7 Low 09:12:13 - 09:33:33 7638
Victoria 09:23:05 -23.0 Dark Down 20.3 158.6 Low 09:12:25 - 09:33:45 7618
Wenatchee 09:22:54 -23.3 Dark Down 22.1 161.4 Low 09:12:14 - 09:33:34 7612
Ellensburg 09:22:55 -23.7 Dark Down 22.4 161.2 Low 09:12:15 - 09:33:35 7589
Yakima 09:22:56 -24.1 Dark Down 22.8 161.1 Low 09:12:16 - 09:33:36 7568
PNWRO 09:22:50 -24.2 Dark Down 23.7 162.7 Low 09:12:10 - 09:33:30 7564
Toppenish/White Swan 09:22:56 -24.3 Dark Down 23.0 161.2 Low 09:12:16 - 09:33:36 7559
The Dalles 09:23:00 -25.2 Dark Down 23.6 160.3 Low 09:12:20 - 09:33:40 7506
Maupin 09:23:00 -25.5 Dark Down 24.0 160.4 Low 09:12:20 - 09:33:40 7486
Dunrhomin 09:21:50 -24.0 Dark Down 31.1 176.4 Up 09:11:10 - 09:32:30 7433
Sisters 09:23:04 -26.5 Dark Down 24.7 159.8 Low 09:12:24 - 09:33:44 7431
Bend 09:23:03 -26.6 Dark Down 25.0 160.0 Low 09:12:23 - 09:33:43 7423
Nikitin 09:21:50 -24.2 Dark Down 31.3 176.4 Up 09:11:10 - 09:32:30 7422
CU-SBO 09:21:50 -24.3 Dark Down 31.4 176.3 Up 09:11:10 - 09:32:30 7417
Oregon Observatory 09:23:04 -26.8 Dark Down 25.1 159.8 Low 09:12:24 - 09:33:44 7411
Chiloquin 09:23:06 -28.2 Dark Down 26.3 159.2 Low 09:12:26 - 09:33:46 7330
Klamath Falls 09:23:07 -28.5 Dark Down 26.6 159.2 Low 09:12:27 - 09:33:47 7311
Cedarville 09:23:00 -28.7 Dark Down 27.7 160.7 Low 09:12:20 - 09:33:40 7298
Fall River/Burney 09:23:06 -29.5 Dark Down 27.8 159.4 Low 09:12:26 - 09:33:46 7248
Gimple 09:23:05 -30.1 Dark Down 28.8 159.8 Low 09:12:25 - 09:33:45 7203
Greenville 09:23:05 -30.2 Dark Down 28.8 159.7 Low 09:12:25 - 09:33:45 7201
Portola 09:23:04 -30.3 Dark Down 29.2 160.1 Low 09:12:24 - 09:33:44 7190
Quincy 09:23:04 -30.3 Dark Down 29.0 159.6 Low 09:12:24 - 09:33:44 7189
Reno 09:22:59 -30.4 Dark Down 29.6 160.7 Low 09:12:19 - 09:33:39 7185
Carson City 09:23:01 -30.7 Dark Down 30.0 160.7 Low 09:12:21 - 09:33:41 7163
Yerington 09:22:58 -30.7 Dark Down 30.3 161.3 Up 09:12:18 - 09:33:38 7161
Gardnerville 09:23:00 -30.9 Dark Down 30.2 160.7 Up 09:12:20 - 09:33:40 7148
Hawthorne 09:22:56 -30.9 Dark Down 30.9 161.8 Up 09:12:16 - 09:33:36 7141
Lee Vining 09:22:58 -31.6 Dark Down 31.3 161.2 Up 09:12:18 - 09:33:38 7097
Bishop 09:22:56 -31.9 Dark Down 32.1 161.8 Up 09:12:16 - 09:33:36 7071
Beatty 09:22:48 -31.7 Dark Down 32.9 163.5 Up 09:12:08 - 09:33:28 7068
Patrick 09:22:34 -31.8 Dark Down 34.9 166.4 Up 09:11:54 - 09:33:14 7016
Laughlin/Bullhead City 09:22:38 -32.3 Dark Down 35.0 165.5 Up 09:11:58 - 09:33:18 6988
Lake Havasu City 09:22:37 -32.8 Dark Down 35.7 165.7 Up 09:11:57 - 09:33:17 6946
George/Scottsdale 09:22:24 -32.4 Dark Down 36.9 168.4 Up 09:11:44 - 09:33:04 6931
Idyllwild 09:22:50 -34.4 Dark Down 35.9 162.9 Up 09:12:10 - 09:33:30 6855
Wildwood 09:22:58 -34.9 Dark Down 35.1 160.9 Up 09:12:18 - 09:33:38 6847
Calipatria 09:22:44 -34.5 Dark Down 36.8 164.1 Up 09:12:04 - 09:33:24 6832
Yuma 09:22:39 -34.5 Dark Down 37.4 165.0 Up 09:11:59 - 09:33:19 6816

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 578992, (2027/05/06 09:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.09 155
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.51 145
PPM 233026     17:24:37.1 -18:26:45  6.4  1.33 142
PPM 233265     17:34:33.4 -18:13:15  7.4  1.08 140
PPM 233140     17:29:26.7 -18:39:51  9.4  0.22 141
578992         17:30:11.8 -18:32:08 16.6       141
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:56 UT

Marc W. Buie, Southwest Research Institute

RECON