RECON: TNO occultation with 85627

Event between (85627) 98HP151 and star GA0640:28061002 with event index number of 2779508

Geocentric closest approach at 2029/06/03 09:47:29 UTC

J2000 position of star is 18:12:34.8 -24:19:45
Equinox of date position of star is 18:14:04.9 -24:19:17
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 56% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 40.7 AU from the Sun and 39.8 AU from the Earth.
Apparent velocity is 22.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 623 seconds.
The 1-sigma cross-track error in the shadow position is 1475 km.
The sky-plane scale is 28852.9 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 9.4 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 85627, (2029/06/03 09:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.0 -26:29:40  0.9 23.36  86
Nunki          18:57:05.2 -26:15:26  2.0  9.84  54
11 Sgr         18:13:31.1 -23:41:33  4.5  0.66  63
PPM 267973     18:11:54.6 -23:45:54  8.4  0.79  64
PPM 268056     18:14:36.0 -24:28:35  9.4  0.16  63
85627          18:14:23.0 -24:19:11 16.5        63
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 1.4 sigma about the mid-time.
The median site spacing is 17.2 km RECON observability=0.6 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)
Kamloops 09:47:04 -13.2 AT Up 14.8 185.1 Really Low 09:32:04 - 10:02:04 5627
Kelowna 09:47:01 -13.7 AT Up 15.6 185.9 Really Low 09:32:01 - 10:02:01 5598
Peachland 09:47:02 -13.9 AT Up 15.7 185.7 Really Low 09:32:02 - 10:02:02 5596
Summerland 09:47:02 -14.0 AT Up 15.9 185.8 Really Low 09:32:02 - 10:02:02 5591
Penticton 09:47:02 -14.0 AT Up 15.9 185.9 Really Low 09:32:02 - 10:02:02 5588
Oliver 09:47:01 -14.3 AT Up 16.3 185.9 Really Low 09:32:01 - 10:02:01 5577
Victoria 09:47:13 -16.0 AT Up 17.1 182.3 Really Low 09:32:13 - 10:02:13 5573
Anarchist Mountain Observatory 09:47:01 -14.4 AT Up 16.4 186.1 Really Low 09:32:01 - 10:02:01 5571
Okanogan 09:47:01 -15.1 AT Up 17.1 185.9 Really Low 09:32:01 - 10:02:01 5550
Sleaford 09:46:23 -7.3 NT Up 11.7 198.2 Really Low 09:31:23 - 10:01:23 5547
Brewster 09:47:02 -15.4 AT Up 17.4 185.7 Really Low 09:32:02 - 10:02:02 5542
Manson/Chelan 09:47:03 -15.7 AT Up 17.6 185.3 Really Low 09:32:03 - 10:02:03 5537
Wenatchee 09:47:03 -16.1 AT Up 18.1 185.2 Really Low 09:32:03 - 10:02:03 5522
Ellensburg 09:47:04 -16.6 AT Up 18.5 185.0 Really Low 09:32:04 - 10:02:04 5508
Yakima 09:47:04 -16.9 AT Up 18.9 185.0 Really Low 09:32:04 - 10:02:04 5493
Toppenish/White Swan 09:47:03 -17.1 AT Up 19.1 185.2 Really Low 09:32:03 - 10:02:03 5484
PNWRO 09:46:58 -17.0 AT Up 19.4 186.6 Really Low 09:31:58 - 10:01:58 5462
The Dalles 09:47:06 -18.0 Dark Up 20.0 184.4 Really Low 09:32:06 - 10:02:06 5459
Maupin 09:47:05 -18.4 Dark Up 20.4 184.6 Low 09:32:05 - 10:02:05 5443
Sisters 09:47:07 -19.3 Dark Up 21.3 184.1 Low 09:32:07 - 10:02:07 5410
Bend 09:47:06 -19.5 Dark Up 21.5 184.4 Low 09:32:06 - 10:02:06 5399
Oregon Observatory 09:47:07 -19.7 Dark Up 21.7 184.2 Low 09:32:07 - 10:02:07 5393
Chiloquin 09:47:08 -21.0 Dark Up 23.0 183.9 Low 09:32:08 - 10:02:08 5339
Klamath Falls 09:47:08 -21.3 Dark Up 23.3 184.0 Low 09:32:08 - 10:02:08 5324
Cedarville 09:47:01 -21.4 Dark Up 23.9 185.6 Low 09:32:01 - 10:02:01 5283
Fall River/Burney 09:47:06 -22.2 Dark Up 24.5 184.4 Low 09:32:06 - 10:02:06 5268
Greenville 09:47:04 -22.9 Dark Up 25.4 184.8 Low 09:32:04 - 10:02:04 5222
Gimple 09:47:04 -22.8 Dark Up 25.4 184.9 Low 09:32:04 - 10:02:04 5222
Quincy 09:47:04 -23.1 Dark Up 25.6 184.9 Low 09:32:04 - 10:02:04 5213
Portola 09:47:02 -23.0 Dark Up 25.7 185.3 Low 09:32:02 - 10:02:02 5204
Reno 09:47:00 -23.0 Dark Up 25.9 186.0 Low 09:32:00 - 10:02:00 5187
Carson City 09:46:59 -23.3 Dark Up 26.2 186.0 Low 09:31:59 - 10:01:59 5169
Gardnerville 09:46:59 -23.5 Dark Up 26.5 186.1 Low 09:31:59 - 10:01:59 5156
Yerington 09:46:58 -23.3 Dark Up 26.4 186.7 Low 09:31:58 - 10:01:58 5155
Hawthorne 09:46:55 -23.5 Dark Up 26.8 187.2 Low 09:31:55 - 10:01:55 5128
Lee Vining 09:46:57 -24.2 Dark Up 27.4 186.8 Low 09:31:57 - 10:01:57 5103
Dunrhomin 09:46:08 -16.3 AT Up 22.7 200.1 Low 09:31:08 - 10:01:08 5067
Bishop 09:46:54 -24.4 Dark Up 27.9 187.6 Low 09:31:54 - 10:01:54 5065
Nikitin 09:46:08 -16.4 AT Up 22.9 200.1 Low 09:31:08 - 10:01:08 5058
CU-SBO 09:46:07 -16.5 AT Up 23.0 200.0 Low 09:31:07 - 10:01:07 5056
Beatty 09:46:48 -24.2 Dark Up 28.2 189.2 Low 09:31:48 - 10:01:48 5027
Patrick 09:46:36 -24.2 Dark Up 29.2 192.3 Low 09:31:36 - 10:01:36 4917
Laughlin/Bullhead City 09:46:39 -24.7 Dark Up 29.6 191.6 Low 09:31:39 - 10:01:39 4910
Wildwood 09:46:54 -27.3 Dark Up 31.2 187.6 Up 09:31:54 - 10:01:54 4884
Lake Havasu City 09:46:37 -25.2 Dark Up 30.2 192.0 Up 09:31:37 - 10:01:37 4868
Idyllwild 09:46:46 -26.9 Dark Up 31.3 189.6 Up 09:31:46 - 10:01:46 4848
Calipatria 09:46:42 -26.9 Dark Up 31.7 190.9 Up 09:31:42 - 10:01:42 4799
George/Scottsdale 09:46:27 -24.7 Dark Up 30.5 194.6 Up 09:31:27 - 10:01:27 4795
Yuma 09:46:37 -26.8 Dark Up 32.0 191.9 Up 09:31:37 - 10:01:37 4764

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, (2029/06/03 09:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.36  86
Nunki          18:55:15.9 -26:17:49  2.0  9.84  54
11 Sgr         18:11:43.4 -23:42:05  4.5  0.66  63
PPM 267973     18:10:06.9 -23:46:23  8.4  0.79  64
PPM 268056     18:12:47.7 -24:29:10  9.4  0.16  63
85627          18:12:34.8 -24:19:45 16.5        63
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:00:33 UT

Marc W. Buie, Southwest Research Institute

RECON