RECON: TNO occultation with 10JE215

Event between 10JE215 and star GA0720:26117792 with event index number of 2092159

Geocentric closest approach at 2024/07/25 04:33:56 UTC

J2000 position of star is 18:38:52.8 -17:34:06
Equinox of date position of star is 18:40:16.0 -17:32:44
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 75 degrees from the moon. Moon is 82% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 28.8 AU from the Sun and 27.9 AU from the Earth.
Apparent velocity is 20.4 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 613 seconds.
The 1-sigma cross-track error in the shadow position is 1801 km.
The sky-plane scale is 20199.2 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 6.5 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JE215, (2024/07/25 04:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.1 -26:29:04  0.9 31.19 104
Nunki          18:56:47.2 -26:15:50  2.0  9.52  71
PPM 234652     18:32:52.6 -18:23:01  5.0  1.96  76
PPM 234784     18:38:07.4 -17:11:04  8.3  0.63  75
PPM 234842     18:40:35.2 -17:25:34 10.0  0.14  75
10JE215        18:40:18.5 -17:32:42 17.0        74
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 1.5 sigma about the mid-time.
The median site spacing is 26.3 km RECON observability=0.3 and success probability=7.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:34:37 -5.6 CT Down 17.4 152.0 Really Low 04:19:37 - 04:49:37 698
Sleaford 04:33:50 -10.7 NT Down 19.3 166.1 Really Low 04:18:50 - 04:48:50 688
Kelowna 04:34:37 -6.6 NT Down 18.4 152.7 Really Low 04:19:37 - 04:49:37 666
Peachland 04:34:38 -6.5 NT Down 18.4 152.4 Really Low 04:19:38 - 04:49:38 662
Summerland 04:34:38 -6.6 NT Down 18.6 152.5 Really Low 04:19:38 - 04:49:38 657
Penticton 04:34:38 -6.7 NT Down 18.7 152.6 Really Low 04:19:38 - 04:49:38 654
Oliver 04:34:38 -7.0 NT Down 19.0 152.5 Really Low 04:19:38 - 04:49:38 640
Anarchist Mountain Observatory 04:34:38 -7.2 NT Down 19.2 152.7 Really Low 04:19:38 - 04:49:38 634
Victoria 04:34:52 -5.5 CT Down 18.4 148.8 Really Low 04:19:52 - 04:49:52 617
Okanogan 04:34:40 -7.5 NT Down 19.7 152.4 Really Low 04:19:40 - 04:49:40 608
Brewster 04:34:42 -7.6 NT Down 19.9 152.1 Really Low 04:19:42 - 04:49:42 597
Manson/Chelan 04:34:43 -7.5 NT Down 20.0 151.8 Really Low 04:19:43 - 04:49:43 589
Wenatchee 04:34:45 -7.8 NT Down 20.3 151.5 Low 04:19:45 - 04:49:45 569
Ellensburg 04:34:47 -7.9 NT Down 20.6 151.2 Low 04:19:47 - 04:49:47 552
Yakima 04:34:47 -8.2 NT Down 21.0 151.1 Low 04:19:47 - 04:49:47 535
Toppenish/White Swan 04:34:48 -8.4 NT Down 21.2 151.3 Low 04:19:48 - 04:49:48 525
PNWRO 04:34:43 -9.4 NT Down 22.0 152.6 Low 04:19:43 - 04:49:43 506
The Dalles 04:34:52 -8.5 NT Down 21.6 150.4 Low 04:19:52 - 04:49:52 491
Maupin 04:34:53 -8.8 NT Down 22.0 150.4 Low 04:19:53 - 04:49:53 472
Sisters 04:34:56 -9.1 NT Down 22.6 149.8 Low 04:19:56 - 04:49:56 431
Bend 04:34:56 -9.4 NT Down 22.9 150.0 Low 04:19:56 - 04:49:56 420
Oregon Observatory 04:34:57 -9.4 NT Down 23.0 149.8 Low 04:19:57 - 04:49:57 412
Chiloquin 04:35:01 -10.0 NT Down 24.0 149.1 Low 04:20:01 - 04:50:01 347
Klamath Falls 04:35:02 -10.3 NT Down 24.4 149.1 Low 04:20:02 - 04:50:02 329
Cedarville 04:34:58 -11.7 NT Down 25.6 150.5 Low 04:19:58 - 04:49:58 292
Fall River/Burney 04:35:03 -11.3 NT Down 25.5 149.2 Low 04:20:03 - 04:50:03 267
Greenville 04:35:04 -12.1 AT Down 26.5 149.4 Low 04:20:04 - 04:50:04 218
Gimple 04:35:03 -12.1 AT Down 26.5 149.5 Low 04:20:03 - 04:50:03 218
Quincy 04:35:04 -12.2 AT Down 26.7 149.4 Low 04:20:04 - 04:50:04 207
Portola 04:35:02 -12.6 AT Down 26.9 149.8 Low 04:20:02 - 04:50:02 199
Reno 04:35:01 -13.1 AT Down 27.4 150.4 Low 04:20:01 - 04:50:01 184
Carson City 04:35:01 -13.4 AT Down 27.7 150.3 Low 04:20:01 - 04:50:01 163
Yerington 04:34:59 -13.9 AT Down 28.1 150.9 Low 04:19:59 - 04:49:59 151
Gardnerville 04:35:01 -13.6 AT Down 28.0 150.3 Low 04:20:01 - 04:50:01 149
Dunrhomin 04:34:03 -20.4 Dark Down 30.9 165.5 Up 04:19:03 - 04:49:03 143
Nikitin 04:34:03 -20.5 Dark Down 31.1 165.5 Up 04:19:03 - 04:49:03 133
CU-SBO 04:34:03 -20.5 Dark Down 31.1 165.4 Up 04:19:03 - 04:49:03 130
Hawthorne 04:34:58 -14.5 AT Down 28.8 151.3 Low 04:19:58 - 04:49:58 123
Lee Vining 04:35:01 -14.6 AT Down 29.1 150.7 Low 04:20:01 - 04:50:01 92
Bishop 04:35:00 -15.4 AT Down 29.9 151.2 Low 04:20:00 - 04:50:00 54
Beatty 04:34:54 -16.7 AT Down 30.9 152.7 Up 04:19:54 - 04:49:54 22
Patrick 04:34:45 -19.4 Dark Down 33.2 155.3 Up 04:19:45 - 04:49:45 -83
Laughlin/Bullhead City 04:34:49 -19.1 Dark Down 33.2 154.5 Up 04:19:49 - 04:49:49 -95
Lake Havasu City 04:34:49 -19.7 Dark Down 33.9 154.6 Up 04:19:49 - 04:49:49 -139
Wildwood 04:35:05 -17.4 AT Down 32.6 150.0 Up 04:20:05 - 04:50:05 -154
Idyllwild 04:35:00 -18.8 Dark Down 33.7 151.9 Up 04:20:00 - 04:50:00 -177
George/Scottsdale 04:34:40 -21.7 Dark Down 35.4 157.0 Up 04:19:40 - 04:49:40 -203
Calipatria 04:34:56 -19.9 Dark Down 34.7 152.9 Up 04:19:56 - 04:49:56 -223
Yuma 04:34:53 -20.8 Dark Down 35.4 153.7 Up 04:19:53 - 04:49:53 -256

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 10JE215, (2024/07/25 04:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.19 104
Nunki          18:55:15.9 -26:17:49  2.0  9.52  71
PPM 234652     18:31:26.3 -18:24:10  5.0  1.96  76
PPM 234784     18:36:41.9 -17:12:24  8.3  0.63  75
PPM 234842     18:39:09.5 -17:27:00 10.0  0.14  75
10JE215        18:38:52.8 -17:34:06 17.0        75
Positions are for J2000

Event circumstances last updated at 2023/11/08 05:24:15 UT

Marc W. Buie, Southwest Research Institute

RECON