RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0720:26225711 with event index number of 2286103

Geocentric closest approach at 2027/07/08 06:13:54 UTC

J2000 position of star is 18:39:16.9 -17:05:11
Equinox of date position of star is 18:40:42.1 -17:03:46
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 23% illuminated.
Apparent brightness V=19.9

[RECON map]
Object is 11.3 AU from the Sun and 10.3 AU from the Earth.
Apparent velocity is 21.0 km/sec on the sky relative to the star, or, 10.2 arcsec/hr.
The 1-sigma error in the time of the event is 52 seconds.
The 1-sigma cross-track error in the shadow position is 614 km.
The sky-plane scale is 7434.5 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.6 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2027/07/08 06:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.0 -26:29:26  0.9 31.47  86
Nunki          18:56:58.2 -26:15:36  2.0  9.93 119
PPM 234652     18:33:03.0 -18:22:53  5.0  2.28 114
PPM 234892     18:42:55.6 -17:02:46  8.3  0.49 117
PPM 234819     18:39:33.8 -16:55:54  9.4  0.34 116
459865         18:40:52.7 -17:03:35 14.0       116
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 19.4 km RECON observability=0.8 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 06:14:35 -14.5 AT Down 20.6 173.8 Low 06:09:44 - 06:19:25 8088
Kamloops 06:15:21 -12.8 AT Down 19.9 159.3 Really Low 06:10:30 - 06:20:11 7889
Kelowna 06:15:19 -13.8 AT Down 20.9 160.1 Low 06:10:29 - 06:20:10 7862
Peachland 06:15:20 -13.8 AT Down 20.9 159.8 Low 06:10:30 - 06:20:11 7853
Summerland 06:15:20 -14.0 AT Down 21.1 159.8 Low 06:10:29 - 06:20:10 7847
Penticton 06:15:19 -14.1 AT Down 21.2 159.9 Low 06:10:29 - 06:20:10 7845
Oliver 06:15:20 -14.4 AT Down 21.5 159.9 Low 06:10:29 - 06:20:10 7829
Anarchist Mountain Observatory 06:15:20 -14.6 AT Down 21.7 160.0 Low 06:10:29 - 06:20:10 7823
Okanogan 06:15:21 -15.1 AT Down 22.3 159.7 Low 06:10:30 - 06:20:11 7788
Brewster 06:15:22 -15.3 AT Down 22.5 159.5 Low 06:10:32 - 06:20:13 7772
Manson/Chelan 06:15:23 -15.4 AT Down 22.6 159.1 Low 06:10:33 - 06:20:14 7757
Victoria 06:15:33 -13.8 AT Up 21.2 156.0 Low 06:10:42 - 06:20:23 7747
Wenatchee 06:15:25 -15.8 AT Down 23.0 158.9 Low 06:10:34 - 06:20:15 7731
Ellensburg 06:15:26 -16.1 AT Down 23.3 158.6 Low 06:10:35 - 06:20:16 7707
Yakima 06:15:26 -16.4 AT Down 23.7 158.5 Low 06:10:36 - 06:20:17 7685
Toppenish/White Swan 06:15:26 -16.7 AT Down 23.9 158.6 Low 06:10:35 - 06:20:16 7676
PNWRO 06:15:21 -17.5 AT Down 24.6 160.1 Low 06:10:31 - 06:20:12 7676
The Dalles 06:15:30 -17.1 AT Down 24.4 157.7 Low 06:10:39 - 06:20:20 7623
Maupin 06:15:30 -17.5 AT Down 24.9 157.8 Low 06:10:39 - 06:20:20 7602
Sisters 06:15:33 -18.1 Dark Down 25.5 157.1 Low 06:10:42 - 06:20:23 7546
Bend 06:15:32 -18.4 Dark Down 25.8 157.3 Low 06:10:41 - 06:20:22 7536
Oregon Observatory 06:15:32 -18.6 Dark Down 26.0 157.2 Low 06:10:42 - 06:20:23 7525
Dunrhomin 06:14:34 -26.1 Dark Down 32.4 173.9 Up 06:09:44 - 06:19:25 7496
Nikitin 06:14:34 -26.3 Dark Down 32.6 173.9 Up 06:09:44 - 06:19:25 7485
CU-SBO 06:14:35 -26.4 Dark Down 32.7 173.8 Up 06:09:45 - 06:19:26 7480
Chiloquin 06:15:35 -19.6 Dark Down 27.1 156.5 Low 06:10:45 - 06:20:26 7442
Klamath Falls 06:15:35 -19.9 Dark Down 27.4 156.5 Low 06:10:45 - 06:20:26 7422
Cedarville 06:15:31 -21.1 Dark Down 28.5 158.0 Low 06:10:40 - 06:20:21 7403
Fall River/Burney 06:15:35 -21.1 Dark Down 28.6 156.7 Low 06:10:45 - 06:20:26 7356
Gimple 06:15:35 -22.1 Dark Down 29.6 157.0 Low 06:10:44 - 06:20:25 7307
Greenville 06:15:35 -22.0 Dark Down 29.6 156.9 Low 06:10:44 - 06:20:25 7306
Quincy 06:15:35 -22.2 Dark Down 29.7 156.9 Low 06:10:44 - 06:20:25 7293
Portola 06:15:33 -22.5 Dark Down 30.0 157.3 Low 06:10:43 - 06:20:24 7292
Reno 06:15:31 -23.0 Dark Down 30.4 158.0 Up 06:10:41 - 06:20:22 7284
Carson City 06:15:31 -23.3 Dark Down 30.8 157.9 Up 06:10:41 - 06:20:22 7262
Yerington 06:15:29 -23.7 Dark Down 31.1 158.5 Up 06:10:39 - 06:20:20 7258
Gardnerville 06:15:31 -23.5 Dark Down 31.0 157.9 Up 06:10:41 - 06:20:22 7247
Hawthorne 06:15:27 -24.3 Dark Down 31.7 159.0 Up 06:10:37 - 06:20:18 7235
Lee Vining 06:15:30 -24.6 Dark Down 32.1 158.3 Up 06:10:40 - 06:20:21 7192
Bishop 06:15:27 -25.4 Dark Down 32.9 159.0 Up 06:10:37 - 06:20:18 7162
Beatty 06:15:21 -26.4 Dark Down 33.7 160.6 Up 06:10:31 - 06:20:12 7153
Patrick 06:15:11 -28.7 Dark Down 35.9 163.5 Up 06:10:21 - 06:20:02 7090
Laughlin/Bullhead City 06:15:14 -28.7 Dark Down 35.9 162.7 Up 06:10:24 - 06:20:05 7063
Lake Havasu City 06:15:13 -29.4 Dark Down 36.6 162.8 Up 06:10:23 - 06:20:04 7019
George/Scottsdale 06:15:03 -30.8 Dark Down 37.9 165.5 Up 06:10:13 - 06:19:54 6996
Idyllwild 06:15:23 -29.3 Dark Down 36.7 159.9 Up 06:10:33 - 06:20:14 6934
Wildwood 06:15:31 -28.3 Dark Down 35.9 157.9 Up 06:10:40 - 06:20:21 6931
Calipatria 06:15:19 -30.2 Dark Down 37.6 161.1 Up 06:10:28 - 06:20:09 6905
Yuma 06:15:15 -30.9 Dark Down 38.3 162.1 Up 06:10:25 - 06:20:06 6886

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 459865, (2027/07/08 06:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.47  86
Nunki          18:55:15.9 -26:17:49  2.0  9.93 119
PPM 234652     18:31:26.3 -18:24:10  5.0  2.28 114
PPM 234892     18:41:19.9 -17:04:27  8.3  0.49 117
PPM 234819     18:37:58.1 -16:57:27  9.4  0.34 116
459865         18:39:16.9 -17:05:11 14.0       116
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:29:44 UT

Marc W. Buie, Southwest Research Institute

RECON