RECON: TNO occultation with 310071

Event between (310071) 10KR59 and star GA0560:15339291 with event index number of 2188556

Geocentric closest approach at 2027/06/07 07:08:03 UTC

J2000 position of star is 17:02:10.7 -33:42:04
Equinox of date position of star is 17:03:45.9 -33:44:03
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 9% illuminated.
Apparent brightness V=21.5

[RECON map]
Object is 23.6 AU from the Sun and 22.6 AU from the Earth.
Apparent velocity is 24.0 km/sec on the sky relative to the star, or, 5.3 arcsec/hr.
The 1-sigma error in the time of the event is 73 seconds.
The 1-sigma cross-track error in the shadow position is 1054 km.
The sky-plane scale is 16381.8 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 6.8 sec chord
Diameter=66.8 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 310071, (2027/06/07 07:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.6 -26:29:25  0.9 10.15 139
26Eps Sco      16:51:57.0 -34:20:24  2.3  2.56 144
PPM 295869     17:06:37.8 -34:09:32  4.7  0.69 147
PPM 295815     17:04:11.5 -33:33:13  8.4  0.19 146
310071         17:03:58.7 -33:44:19 14.0       146
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 13.5 km RECON observability=0.2 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 07:08:07 -15.2 AT Down 4.2 180.9 Really Low 07:01:32 - 07:14:43 10965
Kamloops 07:08:46 -15.7 AT Down 4.8 169.0 Really Low 07:02:10 - 07:15:21 10866
Kelowna 07:08:45 -16.6 AT Down 5.7 169.7 Really Low 07:02:10 - 07:15:21 10864
Peachland 07:08:46 -16.7 AT Down 5.8 169.4 Really Low 07:02:10 - 07:15:21 10860
Penticton 07:08:46 -16.9 AT Down 6.0 169.6 Really Low 07:02:10 - 07:15:21 10859
Summerland 07:08:46 -16.9 AT Down 6.0 169.5 Really Low 07:02:10 - 07:15:21 10859
Anarchist Mountain Observatory 07:08:46 -17.5 AT Down 6.6 169.8 Really Low 07:02:10 - 07:15:21 10854
Oliver 07:08:46 -17.3 AT Down 6.4 169.6 Really Low 07:02:10 - 07:15:21 10854
Okanogan 07:08:46 -18.1 Dark Down 7.2 169.6 Really Low 07:02:10 - 07:15:21 10840
Brewster 07:08:46 -18.3 Dark Down 7.4 169.4 Really Low 07:02:10 - 07:15:21 10834
Manson/Chelan 07:08:46 -18.5 Dark Down 7.6 169.1 Really Low 07:02:10 - 07:15:21 10826
Wenatchee 07:08:46 -18.9 Dark Down 8.0 168.9 Really Low 07:02:10 - 07:15:21 10816
Ellensburg 07:08:52 -19.3 Dark Down 8.4 168.8 Really Low 07:02:17 - 07:15:28 10805
PNWRO 07:08:46 -20.5 Dark Down 9.6 170.1 Really Low 07:02:10 - 07:15:21 10803
Victoria 07:08:59 -17.3 AT Down 6.5 166.4 Really Low 07:02:23 - 07:15:34 10797
Yakima 07:08:52 -19.7 Dark Down 8.8 168.7 Really Low 07:02:17 - 07:15:28 10796
Toppenish/White Swan 07:08:52 -19.9 Dark Down 9.0 168.9 Really Low 07:02:16 - 07:15:27 10794
The Dalles 07:08:55 -20.5 Dark Down 9.7 168.2 Really Low 07:02:19 - 07:15:30 10767
Maupin 07:08:55 -21.0 Dark Down 10.1 168.3 Really Low 07:02:20 - 07:15:31 10759
Dunrhomin 07:08:05 -27.0 Dark Down 16.0 181.5 Really Low 07:01:29 - 07:14:40 10737
Sisters 07:08:57 -21.7 Dark Down 10.9 167.8 Really Low 07:02:22 - 07:15:33 10733
Nikitin 07:08:05 -27.2 Dark Down 16.2 181.5 Really Low 07:01:29 - 07:14:40 10731
Bend 07:08:57 -22.0 Dark Down 11.2 168.0 Really Low 07:02:21 - 07:15:32 10730
CU-SBO 07:08:05 -27.2 Dark Down 16.3 181.5 Really Low 07:01:29 - 07:14:40 10729
Oregon Observatory 07:08:57 -22.2 Dark Down 11.3 167.9 Really Low 07:02:22 - 07:15:33 10724
Chiloquin 07:09:00 -23.4 Dark Down 12.6 167.5 Really Low 07:02:24 - 07:15:35 10683
Cedarville 07:08:54 -24.7 Dark Down 13.8 168.9 Really Low 07:02:19 - 07:15:30 10675
Klamath Falls 07:08:59 -23.7 Dark Down 12.9 167.6 Really Low 07:02:24 - 07:15:35 10675
Fall River/Burney 07:08:59 -24.9 Dark Down 14.1 167.8 Really Low 07:02:23 - 07:15:34 10644
Gimple 07:08:58 -25.9 Dark Down 15.1 168.2 Really Low 07:02:23 - 07:15:34 10623
Greenville 07:08:58 -25.9 Dark Down 15.1 168.1 Really Low 07:02:23 - 07:15:34 10622
Portola 07:08:57 -26.3 Dark Down 15.5 168.5 Really Low 07:02:21 - 07:15:32 10618
Reno 07:08:54 -26.7 Dark Down 15.8 169.1 Really Low 07:02:19 - 07:15:30 10617
Quincy 07:08:58 -26.1 Dark Down 15.3 168.1 Really Low 07:02:23 - 07:15:34 10615
Yerington 07:08:53 -27.3 Dark Down 16.5 169.6 Really Low 07:02:17 - 07:15:28 10607
Carson City 07:08:55 -27.0 Dark Down 16.2 169.1 Really Low 07:02:19 - 07:15:30 10605
Gardnerville 07:08:55 -27.3 Dark Down 16.4 169.1 Really Low 07:02:20 - 07:15:31 10598
Hawthorne 07:08:46 -27.9 Dark Down 17.0 170.0 Really Low 07:02:10 - 07:15:21 10598
Lee Vining 07:08:53 -28.3 Dark Down 17.5 169.6 Really Low 07:02:18 - 07:15:29 10572
Bishop 07:08:46 -29.0 Dark Down 18.2 170.1 Really Low 07:02:10 - 07:15:21 10559
Beatty 07:08:46 -29.7 Dark Down 18.8 171.5 Really Low 07:02:10 - 07:15:21 10558
Patrick 07:08:35 -31.5 Dark Down 20.6 174.0 Low 07:02:00 - 07:15:11 10527
Laughlin/Bullhead City 07:08:38 -31.7 Dark Down 20.8 173.3 Low 07:02:03 - 07:15:14 10511
Lake Havasu City 07:08:38 -32.4 Dark Down 21.5 173.5 Low 07:02:02 - 07:15:13 10486
George/Scottsdale 07:08:29 -33.4 Dark Down 22.4 175.7 Low 07:01:53 - 07:15:04 10472
Idyllwild 07:08:46 -32.8 Dark Down 22.0 171.4 Low 07:02:10 - 07:15:21 10431
Wildwood 07:08:53 -32.2 Dark Down 21.4 169.8 Low 07:02:18 - 07:15:29 10424
Calipatria 07:08:42 -33.6 Dark Down 22.7 172.4 Low 07:02:07 - 07:15:18 10415
Yuma 07:08:40 -34.1 Dark Down 23.2 173.2 Low 07:02:04 - 07:15:15 10405

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 310071, (2027/06/07 07:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.15 139
26Eps Sco      16:50:08.8 -34:17:41  2.3  2.56 144
PPM 295869     17:04:49.3 -34:07:23  4.7  0.69 147
PPM 295815     17:02:23.6 -33:30:58  8.4  0.19 146
310071         17:02:10.7 -33:42:04 14.0       146
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:23:39 UT

Marc W. Buie, Southwest Research Institute

RECON