RECON: TNO occultation with 85627

Event between (85627) 98HP151 and star GA0640:17945629 with event index number of 2406723

Geocentric closest approach at 2024/06/08 05:15:28 UTC

J2000 position of star is 17:40:09.6 -24:07:20
Equinox of date position of star is 17:41:38.1 -24:08:01
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon. Moon is 4% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 41.0 AU from the Sun and 40.0 AU from the Earth.
Apparent velocity is 24.3 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 289 seconds.
The 1-sigma cross-track error in the shadow position is 1730 km.
The sky-plane scale is 29000.1 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 8.8 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 85627, (2024/06/08 05:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.6 -26:29:03  0.9 16.15 151
35Eta Oph      17:11:46.9 -15:45:12  2.6 10.93 155
51 Oph         17:32:54.5 -23:58:46  4.8  2.00 164
PPM 267136     17:42:19.4 -23:50:49  8.2  0.32 166
PPM 267130     17:41:42.1 -24:18:03  9.5  0.17 166
85627          17:41:39.3 -24:08:01 16.1       166
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 3.1 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 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 05:17:07 -11.5 NT Up 8.0 148.4 Really Low 05:02:07 - 05:32:07 1686
Kamloops 05:17:40 -8.1 NT Up 3.7 136.4 Really Low 05:02:40 - 05:32:40 1341
Kelowna 05:17:41 -9.1 NT Up 4.7 137.1 Really Low 05:02:41 - 05:32:41 1326
Peachland 05:17:42 -9.1 NT Up 4.6 136.9 Really Low 05:02:42 - 05:32:42 1314
Summerland 05:17:42 -9.3 NT Up 4.8 136.9 Really Low 05:02:42 - 05:32:42 1310
Penticton 05:17:41 -9.4 NT Up 4.9 137.0 Really Low 05:02:41 - 05:32:41 1310
Oliver 05:17:43 -9.6 NT Up 5.1 137.0 Really Low 05:02:43 - 05:32:43 1294
Anarchist Mountain Observatory 05:17:42 -9.9 NT Up 5.3 137.2 Really Low 05:02:42 - 05:32:42 1291
Okanogan 05:17:44 -10.3 NT Up 5.7 136.9 Really Low 05:02:44 - 05:32:44 1256
Brewster 05:17:46 -10.4 NT Up 5.8 136.8 Really Low 05:02:46 - 05:32:46 1239
Manson/Chelan 05:17:47 -10.4 NT Up 5.8 136.5 Really Low 05:02:47 - 05:32:47 1220
Wenatchee 05:17:48 -10.8 NT Up 6.1 136.3 Really Low 05:02:48 - 05:32:48 1193
Dunrhomin 05:17:26 -22.5 Dark Down 18.4 147.7 Really Low 05:02:26 - 05:32:26 1179
Victoria 05:17:51 -8.6 NT Up 3.8 134.0 Really Low 05:02:51 - 05:32:51 1170
Nikitin 05:17:27 -22.7 Dark Down 18.5 147.7 Really Low 05:02:27 - 05:32:27 1169
Ellensburg 05:17:50 -11.0 NT Up 6.3 136.1 Really Low 05:02:50 - 05:32:50 1168
CU-SBO 05:17:27 -22.7 Dark Down 18.5 147.6 Really Low 05:02:27 - 05:32:27 1164
PNWRO 05:17:49 -12.5 AT Up 7.8 137.3 Really Low 05:02:49 - 05:32:49 1160
Yakima 05:17:51 -11.3 NT Up 6.6 136.1 Really Low 05:02:51 - 05:32:51 1147
Toppenish/White Swan 05:17:51 -11.6 NT Up 6.8 136.2 Really Low 05:02:51 - 05:32:51 1141
The Dalles 05:17:55 -11.8 NT Up 7.0 135.5 Really Low 05:02:55 - 05:32:55 1081
Maupin 05:17:55 -12.2 AT Up 7.3 135.6 Really Low 05:02:55 - 05:32:55 1063
Sisters 05:17:59 -12.7 AT Up 7.7 135.1 Really Low 05:02:59 - 05:32:59 1004
Bend 05:17:59 -13.0 AT Up 8.0 135.3 Really Low 05:02:59 - 05:32:59 998
Oregon Observatory 05:17:59 -13.1 AT Up 8.1 135.2 Really Low 05:02:59 - 05:32:59 985
Chiloquin 05:18:03 -13.9 AT Up 8.8 134.7 Really Low 05:03:03 - 05:33:03 901
Cedarville 05:18:02 -15.5 AT Up 10.4 135.9 Really Low 05:03:02 - 05:33:02 888
Klamath Falls 05:18:04 -14.2 AT Up 9.1 134.7 Really Low 05:03:04 - 05:33:04 884
Fall River/Burney 05:18:06 -15.3 AT Up 10.1 134.9 Really Low 05:03:06 - 05:33:06 827
Gimple 05:18:07 -16.3 AT Up 11.0 135.2 Really Low 05:03:07 - 05:33:07 788
Greenville 05:18:07 -16.2 AT Up 11.0 135.1 Really Low 05:03:07 - 05:33:07 785
Reno 05:18:05 -17.2 AT Down 12.0 135.9 Really Low 05:03:05 - 05:33:05 781
Portola 05:18:06 -16.7 AT Up 11.5 135.4 Really Low 05:03:06 - 05:33:06 779
Quincy 05:18:07 -16.4 AT Up 11.1 135.1 Really Low 05:03:07 - 05:33:07 773
Yerington 05:18:05 -18.0 AT Down 12.8 136.3 Really Low 05:03:05 - 05:33:05 766
Carson City 05:18:06 -17.5 AT Down 12.3 135.8 Really Low 05:03:06 - 05:33:06 760
Hawthorne 05:18:05 -18.6 Dark Down 13.4 136.6 Really Low 05:03:05 - 05:33:05 752
Gardnerville 05:18:07 -17.7 AT Down 12.5 135.8 Really Low 05:03:07 - 05:33:07 747
Lee Vining 05:18:07 -18.8 Dark Down 13.6 136.2 Really Low 05:03:07 - 05:33:07 704
Beatty 05:18:03 -20.8 Dark Down 15.6 137.8 Really Low 05:03:03 - 05:33:03 702
Bishop 05:18:07 -19.6 Dark Down 14.4 136.6 Really Low 05:03:07 - 05:33:07 687
Patrick 05:17:58 -23.3 Dark Down 18.3 139.7 Really Low 05:02:58 - 05:32:58 686
Laughlin/Bullhead City 05:18:01 -23.2 Dark Down 18.1 139.1 Really Low 05:03:01 - 05:33:01 651
George/Scottsdale 05:17:56 -25.7 Dark Down 20.6 140.9 Low 05:02:56 - 05:32:56 628
Lake Havasu City 05:18:01 -23.9 Dark Down 18.7 139.1 Really Low 05:03:01 - 05:33:01 614
Idyllwild 05:18:09 -23.3 Dark Down 18.0 137.2 Really Low 05:03:09 - 05:33:09 498
Calipatria 05:18:07 -24.4 Dark Down 19.1 137.9 Really Low 05:03:07 - 05:33:07 489
Yuma 05:18:05 -25.2 Dark Down 19.9 138.5 Really Low 05:03:05 - 05:33:05 485
Wildwood 05:18:13 -22.1 Dark Down 16.6 135.8 Really Low 05:03:13 - 05:33:13 467

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 85627, (2024/06/08 05:15UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.15 151
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.93 155
51 Oph         17:31:25.0 -23:57:46  4.8  2.00 164
PPM 267136     17:40:49.9 -23:50:10  8.2  0.32 166
PPM 267130     17:40:12.3 -24:17:22  9.5  0.17 166
85627          17:40:09.6 -24:07:20 16.1       166
Positions are for J2000

Event circumstances last updated at 2024/02/13 04:30:49 UT

Marc W. Buie, Southwest Research Institute

RECON