RECON: TNO occultation with 85627

Event between (85627) 98HP151 and star GA0640:20720607 with event index number of 2408028

Geocentric closest approach at 2026/07/10 05:13:43 UTC

J2000 position of star is 17:50:07.6 -24:14:56
Equinox of date position of star is 17:51:37.5 -24:15:15
Stellar brightness G=16.8, 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 24% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 40.9 AU from the Sun and 39.9 AU from the Earth.
Apparent velocity is 22.7 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 366 seconds.
The 1-sigma cross-track error in the shadow position is 1860 km.
The sky-plane scale is 28952.3 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 -- 3.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 85627, (2026/07/10 05:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.3 -26:29:19  0.9 18.35 160
35Eta Oph      17:11:54.1 -15:45:21  2.6 12.63 149
PPM 267497     17:56:32.1 -24:53:23  6.4  1.26 140
PPM 267369     17:51:34.9 -24:12:48  7.2  0.06 141
85627          17:51:45.1 -24:15:17 16.8       141
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 2.5 sigma about the mid-time.
The median site spacing is 15.7 km RECON observability=0.5 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 05:14:08 -11.6 NT Down 13.4 173.7 Really Low 04:59:08 - 05:29:08 12495
Kamloops 05:14:52 -7.8 NT Down 12.8 160.4 Really Low 04:59:52 - 05:29:52 12338
Kelowna 05:14:49 -8.8 NT Down 13.8 161.1 Really Low 04:59:49 - 05:29:49 12321
Peachland 05:14:52 -8.8 NT Down 13.8 160.9 Really Low 04:59:52 - 05:29:52 12314
Summerland 05:14:50 -9.0 NT Down 14.0 160.9 Really Low 04:59:50 - 05:29:50 12310
Penticton 05:14:51 -9.1 NT Down 14.1 161.0 Really Low 04:59:51 - 05:29:51 12309
Oliver 05:14:51 -9.3 NT Down 14.4 161.0 Really Low 04:59:51 - 05:29:51 12297
Anarchist Mountain Observatory 05:14:50 -9.5 NT Down 14.6 161.2 Really Low 04:59:50 - 05:29:50 12294
Okanogan 05:14:52 -9.9 NT Down 15.2 160.9 Really Low 04:59:52 - 05:29:52 12268
Brewster 05:14:52 -10.1 NT Down 15.4 160.7 Really Low 04:59:52 - 05:29:52 12256
Manson/Chelan 05:14:52 -10.1 NT Down 15.5 160.3 Really Low 04:59:52 - 05:29:52 12244
Victoria 05:15:04 -8.2 NT Down 14.1 157.5 Really Low 05:00:04 - 05:30:04 12226
Wenatchee 05:14:52 -10.4 NT Down 15.9 160.1 Really Low 04:59:52 - 05:29:52 12225
Ellensburg 05:14:52 -10.6 NT Down 16.2 159.9 Really Low 04:59:52 - 05:29:52 12207
Yakima 05:14:52 -10.9 NT Down 16.6 159.8 Really Low 04:59:52 - 05:29:52 12191
PNWRO 05:14:52 -12.1 AT Down 17.5 161.3 Really Low 04:59:52 - 05:29:52 12187
Toppenish/White Swan 05:14:52 -11.1 NT Down 16.8 160.0 Really Low 04:59:52 - 05:29:52 12184
The Dalles 05:15:01 -11.4 NT Down 17.4 159.2 Really Low 05:00:01 - 05:30:01 12142
Maupin 05:15:01 -11.8 NT Down 17.8 159.3 Really Low 05:00:01 - 05:30:01 12126
Sisters 05:15:03 -12.2 AT Down 18.5 158.7 Really Low 05:00:03 - 05:30:03 12082
Bend 05:15:02 -12.5 AT Down 18.8 158.9 Really Low 05:00:02 - 05:30:02 12076
Oregon Observatory 05:15:03 -12.6 AT Down 18.9 158.8 Really Low 05:00:03 - 05:30:03 12066
Dunrhomin 05:14:11 -22.3 Dark Down 25.3 174.0 Low 04:59:11 - 05:29:11 12055
Nikitin 05:14:11 -22.5 Dark Down 25.4 173.9 Low 04:59:11 - 05:29:11 12046
CU-SBO 05:14:11 -22.5 Dark Down 25.5 173.8 Low 04:59:11 - 05:29:11 12043
Chiloquin 05:15:06 -13.4 AT Down 20.0 158.2 Low 05:00:06 - 05:30:06 12001
Klamath Falls 05:15:07 -13.6 AT Down 20.4 158.3 Low 05:00:07 - 05:30:07 11986
Cedarville 05:15:02 -15.0 AT Down 21.5 159.6 Low 05:00:02 - 05:30:02 11975
Fall River/Burney 05:15:07 -14.7 AT Down 21.6 158.4 Low 05:00:07 - 05:30:07 11935
Gimple 05:15:06 -15.7 AT Down 22.6 158.8 Low 05:00:06 - 05:30:06 11897
Greenville 05:15:06 -15.6 AT Down 22.6 158.7 Low 05:00:06 - 05:30:06 11896
Portola 05:15:05 -16.1 AT Down 23.0 159.1 Low 05:00:05 - 05:30:05 11886
Quincy 05:15:06 -15.8 AT Down 22.7 158.7 Low 05:00:06 - 05:30:06 11886
Reno 05:15:02 -16.6 AT Down 23.4 159.7 Low 05:00:02 - 05:30:02 11882
Carson City 05:15:03 -16.9 AT Down 23.8 159.7 Low 05:00:03 - 05:30:03 11863
Yerington 05:15:02 -17.4 AT Down 24.1 160.2 Low 05:00:02 - 05:30:02 11862
Gardnerville 05:15:04 -17.1 AT Down 24.0 159.7 Low 05:00:04 - 05:30:04 11851
Hawthorne 05:14:52 -18.0 AT Down 24.7 160.6 Low 04:59:52 - 05:29:52 11846
Lee Vining 05:15:01 -18.2 Dark Down 25.1 160.1 Low 05:00:01 - 05:30:01 11809
Bishop 05:15:01 -19.0 Dark Down 25.8 160.7 Low 05:00:01 - 05:30:01 11785
Beatty 05:14:52 -20.2 Dark Down 26.7 162.2 Low 04:59:52 - 05:29:52 11781
Patrick 05:14:45 -22.8 Dark Down 28.8 164.8 Low 04:59:45 - 05:29:45 11731
Laughlin/Bullhead City 05:14:49 -22.6 Dark Down 28.9 164.1 Low 04:59:49 - 05:29:49 11708
Lake Havasu City 05:14:48 -23.3 Dark Down 29.6 164.3 Low 04:59:48 - 05:29:48 11672
George/Scottsdale 05:14:39 -25.1 Dark Down 30.8 166.6 Up 04:59:39 - 05:29:39 11652
Idyllwild 05:14:52 -22.7 Dark Down 29.7 161.7 Low 04:59:52 - 05:29:52 11599
Wildwood 05:15:03 -21.4 Dark Down 28.9 160.0 Low 05:00:03 - 05:30:03 11594
Calipatria 05:14:52 -23.8 Dark Down 30.6 162.8 Up 04:59:52 - 05:29:52 11575
Yuma 05:14:49 -24.6 Dark Down 31.2 163.7 Up 04:59:49 - 05:29:49 11560

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, (2026/07/10 05:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.35 160
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.63 149
PPM 267497     17:54:54.1 -24:53:13  6.4  1.26 140
PPM 267369     17:49:57.4 -24:12:26  7.2  0.06 141
85627          17:50:07.6 -24:14:56 16.8       141
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:31:45 UT

Marc W. Buie, Southwest Research Institute

RECON