RECON: TNO occultation with 10JE215

Event between 10JE215 and star GA0720:27481830 with event index number of 2092068

Geocentric closest approach at 2024/06/04 09:57:34 UTC

J2000 position of star is 18:44:21.0 -17:24:34
Equinox of date position of star is 18:45:44.1 -17:23:01
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 125 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 28.7 AU from the Sun and 27.8 AU from the Earth.
Apparent velocity is 19.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 652 seconds.
The 1-sigma cross-track error in the shadow position is 1951 km.
The sky-plane scale is 20190.7 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 6.8 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JE215, (2024/06/04 09:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.5 -26:29:03  0.9 32.46 157
Nunki          18:56:46.7 -26:15:51  2.0  9.24 124
PPM 234930     18:44:21.4 -19:15:31  6.1  1.91 126
PPM 234985     18:47:02.3 -17:31:03  7.6  0.33 125
PPM 234940     18:44:55.1 -17:23:27  9.7  0.20 126
10JE215        18:45:46.1 -17:22:59 13.8       125
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 20.8 km RECON observability=0.8 and success probability=16.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 09:57:10 -12.4 AT Down 21.9 181.2 Low 09:42:10 - 10:12:10 782
Kelowna 09:57:06 -12.8 AT Down 22.7 182.1 Low 09:42:06 - 10:12:06 743
Peachland 09:57:08 -13.0 AT Down 22.8 181.8 Low 09:42:08 - 10:12:08 740
Summerland 09:57:07 -13.1 AT Down 23.0 181.9 Low 09:42:07 - 10:12:07 732
Sleaford 09:56:20 -6.3 NT Up 19.2 195.6 Really Low 09:41:20 - 10:11:20 730
Penticton 09:57:07 -13.1 AT Down 23.0 182.0 Low 09:42:07 - 10:12:07 729
Oliver 09:57:07 -13.4 AT Down 23.4 182.0 Low 09:42:07 - 10:12:07 713
Anarchist Mountain Observatory 09:57:06 -13.5 AT Down 23.6 182.2 Low 09:42:06 - 10:12:06 705
Victoria 09:57:21 -15.2 AT Down 24.1 178.1 Low 09:42:21 - 10:12:21 703
Okanogan 09:57:07 -14.2 AT Down 24.2 182.0 Low 09:42:07 - 10:12:07 677
Brewster 09:57:08 -14.5 AT Down 24.5 181.8 Low 09:42:08 - 10:12:08 665
Manson/Chelan 09:57:09 -14.8 AT Down 24.7 181.5 Low 09:42:09 - 10:12:09 658
Wenatchee 09:57:10 -15.2 AT Down 25.2 181.3 Low 09:42:10 - 10:12:10 636
Ellensburg 09:57:10 -15.7 AT Down 25.6 181.1 Low 09:42:10 - 10:12:10 618
Yakima 09:57:11 -16.0 AT Down 26.0 181.0 Low 09:42:11 - 10:12:11 599
Toppenish/White Swan 09:57:10 -16.2 AT Down 26.2 181.2 Low 09:42:10 - 10:12:10 587
PNWRO 09:57:04 -16.0 AT Down 26.5 182.8 Low 09:42:04 - 10:12:04 560
The Dalles 09:57:13 -17.1 AT Down 27.0 180.4 Low 09:42:13 - 10:12:13 553
Maupin 09:57:13 -17.5 AT Down 27.4 180.5 Low 09:42:13 - 10:12:13 531
Sisters 09:57:15 -18.4 Dark Down 28.3 180.0 Low 09:42:15 - 10:12:15 489
Bend 09:57:14 -18.5 Dark Down 28.5 180.3 Low 09:42:14 - 10:12:14 475
Oregon Observatory 09:57:15 -18.7 Dark Down 28.7 180.1 Low 09:42:15 - 10:12:15 466
Chiloquin 09:57:17 -20.0 Dark Down 30.0 179.7 Up 09:42:17 - 10:12:17 397
Klamath Falls 09:57:16 -20.3 Dark Down 30.4 179.8 Up 09:42:16 - 10:12:16 378
Cedarville 09:57:10 -20.4 Dark Down 31.0 181.5 Up 09:42:10 - 10:12:10 329
Fall River/Burney 09:57:15 -21.2 Dark Down 31.5 180.2 Up 09:42:15 - 10:12:15 308
Greenville 09:57:13 -21.9 Dark Down 32.4 180.7 Up 09:42:13 - 10:12:13 252
Gimple 09:57:13 -21.8 Dark Down 32.4 180.8 Up 09:42:13 - 10:12:13 251
Quincy 09:57:13 -22.0 Dark Down 32.7 180.7 Up 09:42:13 - 10:12:13 240
Portola 09:57:11 -22.0 Dark Down 32.8 181.2 Up 09:42:11 - 10:12:11 230
Reno 09:57:09 -22.0 Dark Down 33.0 182.0 Up 09:42:09 - 10:12:09 209
Carson City 09:57:09 -22.3 Dark Down 33.4 182.0 Up 09:42:09 - 10:12:09 187
Gardnerville 09:57:08 -22.5 Dark Down 33.6 182.0 Up 09:42:08 - 10:12:08 172
Yerington 09:57:06 -22.2 Dark Down 33.6 182.7 Up 09:42:06 - 10:12:06 171
Hawthorne 09:57:03 -22.4 Dark Down 34.0 183.3 Up 09:42:03 - 10:12:03 139
Dunrhomin 09:56:07 -14.9 AT Up 30.4 197.9 Up 09:41:07 - 10:11:07 111
Lee Vining 09:57:06 -23.1 Dark Down 34.6 182.8 Up 09:42:06 - 10:12:06 107
Nikitin 09:56:07 -15.1 AT Up 30.6 197.9 Up 09:41:07 - 10:11:07 100
CU-SBO 09:56:07 -15.2 AT Up 30.7 197.8 Up 09:41:07 - 10:11:07 97
Bishop 09:57:03 -23.3 Dark Down 35.1 183.6 Up 09:42:03 - 10:12:03 63
Beatty 09:56:55 -23.0 Dark Down 35.5 185.5 Up 09:41:55 - 10:11:55 20
Patrick 09:56:42 -22.9 Dark Down 36.7 189.0 Up 09:41:42 - 10:11:42 -104
Laughlin/Bullhead City 09:56:45 -23.5 Dark Down 37.0 188.2 Up 09:41:45 - 10:11:45 -115
Wildwood 09:57:04 -26.1 Dark Down 38.4 183.5 Up 09:42:04 - 10:12:04 -154
Lake Havasu City 09:56:44 -23.9 Dark Down 37.7 188.6 Up 09:41:44 - 10:11:44 -163
Idyllwild 09:56:55 -25.6 Dark Down 38.7 185.8 Up 09:41:55 - 10:11:55 -193
George/Scottsdale 09:56:33 -23.3 Dark Down 38.1 191.6 Up 09:41:33 - 10:11:33 -242
Calipatria 09:56:50 -25.6 Dark Down 39.1 187.3 Up 09:41:50 - 10:11:50 -248
Yuma 09:56:45 -25.5 Dark Down 39.5 188.4 Up 09:41:45 - 10:11:45 -287

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, (2024/06/04 09:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 32.46 157
Nunki          18:55:15.9 -26:17:49  2.0  9.24 124
PPM 234930     18:42:55.1 -19:17:04  6.1  1.91 126
PPM 234985     18:45:37.1 -17:32:42  7.6  0.33 125
PPM 234940     18:43:30.0 -17:25:01  9.7  0.20 126
10JE215        18:44:21.0 -17:24:34 13.8       125
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:12:44 UT

Marc W. Buie, Southwest Research Institute

RECON