RECON: TNO occultation with 15810

Event between (15810) Arawn and star GA0700:33707454 with event index number of 1130836

Geocentric closest approach at 2022/06/08 09:52:57 UTC

J2000 position of star is 19:49:03.5 -19:05:26
Equinox of date position of star is 19:50:19.4 -19:02:05
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon. Moon is 58% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 36.0 AU from the Sun and 35.2 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 392 seconds.
The 1-sigma cross-track error in the shadow position is 1527 km.
The sky-plane scale is 25521.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 9.8 sec chord
Diameter=70.9 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15810, (2022/06/08 09:55UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.1 -29:30:10  1.2 43.92 152
Nunki          18:56:39.3 -26:16:01  2.0 14.33 106
57 Sgr         19:53:30.1 -18:59:11  5.8  0.74 119
PPM 236516     19:49:23.0 -18:35:03  8.5  0.51 118
PPM 236536     19:50:28.5 -19:04:00  9.6  0.04 118
15810          19:50:21.7 -19:01:59 16.9       119
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 2.3 sigma about the mid-time.
The median site spacing is 14.4 km RECON observability=0.8 and success probability=16.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 09:52:47 -12.5 AT Down 19.9 168.3 Really Low 09:37:47 - 10:07:47 1087
Kelowna 09:52:48 -12.9 AT Down 20.3 168.1 Low 09:37:48 - 10:07:48 1074
Peachland 09:52:49 -13.1 AT Down 20.3 167.8 Low 09:37:49 - 10:07:49 1072
Summerland 09:52:50 -13.2 AT Down 20.5 167.9 Low 09:37:50 - 10:07:50 1066
Penticton 09:52:49 -13.2 AT Down 20.6 168.0 Low 09:37:49 - 10:07:49 1062
Oliver 09:52:50 -13.5 AT Down 20.9 168.0 Low 09:37:50 - 10:07:50 1049
Victoria 09:53:06 -15.2 AT Down 21.0 164.2 Low 09:38:06 - 10:08:06 1046
Anarchist Mountain Observatory 09:52:49 -13.6 AT Down 21.1 168.2 Low 09:37:49 - 10:07:49 1042
Tonasket 09:52:50 -13.9 AT Down 21.4 168.1 Low 09:37:50 - 10:07:50 1029
Okanogan 09:52:50 -14.2 AT Down 21.7 167.9 Low 09:37:50 - 10:07:50 1017
Brewster 09:52:51 -14.5 AT Down 22.0 167.7 Low 09:37:51 - 10:07:51 1008
Manson/Chelan 09:52:53 -14.8 AT Down 22.1 167.3 Low 09:37:53 - 10:07:53 1002
Wenatchee 09:52:55 -15.3 AT Down 22.5 167.1 Low 09:37:55 - 10:07:55 983
Ellensburg 09:52:56 -15.7 AT Down 22.9 166.9 Low 09:37:56 - 10:07:56 968
Yakima 09:52:57 -16.1 AT Down 23.3 166.8 Low 09:37:57 - 10:07:57 950
Toppenish/White Swan 09:52:57 -16.2 AT Down 23.5 166.9 Low 09:37:57 - 10:07:57 940
Pasco 09:52:52 -16.0 AT Down 23.8 168.2 Low 09:37:52 - 10:07:52 925
Goldendale 09:53:00 -16.9 AT Down 24.0 166.5 Low 09:38:00 - 10:08:00 919
PNWRO 09:52:51 -16.1 AT Down 24.1 168.4 Low 09:37:51 - 10:07:51 913
The Dalles 09:53:01 -17.2 AT Down 24.2 166.1 Low 09:38:01 - 10:08:01 911
Maupin 09:53:01 -17.5 AT Down 24.6 166.1 Low 09:38:01 - 10:08:01 892
Sisters 09:53:05 -18.5 Dark Down 25.4 165.6 Low 09:38:05 - 10:08:05 855
Redmond 09:53:03 -18.4 Dark Down 25.5 166.0 Low 09:38:03 - 10:08:03 851
Bend 09:53:04 -18.6 Dark Down 25.6 165.8 Low 09:38:04 - 10:08:04 842
Oregon Observatory 09:53:05 -18.8 Dark Down 25.8 165.6 Low 09:38:05 - 10:08:05 835
La Pine/Gilchrist 09:53:05 -19.0 Dark Down 26.0 165.6 Low 09:38:05 - 10:08:05 825
North Lake 09:53:04 -19.2 Dark Down 26.5 166.1 Low 09:38:04 - 10:08:04 800
Chiloquin 09:53:09 -20.1 Dark Down 27.0 165.1 Low 09:38:09 - 10:08:09 773
Paisley 09:53:02 -19.6 Dark Down 27.1 166.4 Low 09:38:02 - 10:08:02 771
Klamath Falls 09:53:09 -20.4 Dark Down 27.3 165.1 Low 09:38:09 - 10:08:09 756
Lakeview 09:53:02 -19.9 Dark Down 27.6 166.6 Low 09:38:02 - 10:08:02 744
Cedarville 09:53:02 -20.5 Dark Down 28.3 166.7 Low 09:38:02 - 10:08:02 709
Fall River/Burney 09:53:09 -21.3 Dark Down 28.5 165.3 Low 09:38:09 - 10:08:09 692
Susanville 09:53:06 -21.6 Dark Down 29.3 166.0 Low 09:38:06 - 10:08:06 654
Greenville 09:53:08 -22.0 Dark Down 29.5 165.7 Low 09:38:08 - 10:08:08 641
Gimple 09:53:08 -21.9 Dark Down 29.5 165.8 Low 09:38:08 - 10:08:08 640
Quincy 09:53:08 -22.1 Dark Down 29.7 165.7 Low 09:38:08 - 10:08:08 630
Portola 09:53:06 -22.1 Dark Down 29.9 166.1 Low 09:38:06 - 10:08:06 620
Reno 09:53:04 -22.1 Dark Down 30.3 166.8 Up 09:38:04 - 10:08:04 600
Carson City 09:53:04 -22.4 Dark Down 30.6 166.8 Up 09:38:04 - 10:08:04 580
Gardnerville 09:53:04 -22.6 Dark Down 30.9 166.8 Up 09:38:04 - 10:08:04 566
Yerington 09:53:01 -22.3 Dark Down 30.9 167.4 Up 09:38:01 - 10:08:01 564
Hawthorne 09:53:00 -22.5 Dark Down 31.5 167.9 Up 09:38:00 - 10:08:00 533
Lee Vining 09:53:03 -23.2 Dark Down 32.0 167.3 Up 09:38:03 - 10:08:03 506
Tonopah 09:52:53 -22.4 Dark Down 32.2 169.4 Up 09:37:53 - 10:07:53 494
Dunrhomin 09:51:55 -15.2 AT Down 30.6 182.5 Up 09:36:55 - 10:06:55 472
Bishop 09:53:00 -23.4 Dark Down 32.7 168.0 Up 09:38:00 - 10:08:00 464
Beatty 09:52:52 -23.2 Dark Down 33.4 169.8 Up 09:37:52 - 10:07:52 421
Indian Springs 09:52:47 -23.0 Dark Down 33.8 170.9 Up 09:37:47 - 10:07:47 390
CPSLO 09:53:13 -26.1 Dark Down 34.3 165.3 Up 09:38:13 - 10:08:13 357
Henderson 09:52:45 -23.2 Dark Down 34.4 171.6 Up 09:37:45 - 10:07:45 350
Patrick 09:52:40 -23.2 Dark Down 35.2 172.8 Up 09:37:40 - 10:07:40 299
Laughlin/Bullhead City 09:52:44 -23.7 Dark Down 35.3 172.0 Up 09:37:44 - 10:07:44 291
Kingman/Dolan Springs 09:52:41 -23.4 Dark Down 35.4 172.6 Up 09:37:41 - 10:07:41 287
Mohave Valley 09:52:44 -23.9 Dark Down 35.6 172.0 Up 09:37:44 - 10:07:44 274
Wildwood 09:53:05 -26.3 Dark Down 35.8 167.4 Up 09:38:05 - 10:08:05 264
Lake Havasu City 09:52:43 -24.1 Dark Down 36.0 172.2 Up 09:37:43 - 10:07:43 245
Idyllwild 09:52:56 -25.8 Dark Down 36.5 169.4 Up 09:37:56 - 10:07:56 223
Parker 09:52:43 -24.4 Dark Down 36.4 172.2 Up 09:37:43 - 10:07:43 222
Blythe 09:52:45 -25.0 Dark Down 36.9 171.8 Up 09:37:45 - 10:07:45 192
Calipatria 09:52:51 -25.8 Dark Down 37.3 170.7 Up 09:37:51 - 10:07:51 170
George/Scottsdale 09:52:31 -23.6 Dark Down 37.0 175.0 Up 09:37:31 - 10:07:31 166
Yuma 09:52:46 -25.8 Dark Down 37.8 171.7 Up 09:37:46 - 10:07:46 131

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 15810, (2022/06/08 09:55UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 43.92 152
Nunki          18:55:15.9 -26:17:49  2.0 14.33 106
57 Sgr         19:52:12.0 -19:02:43  5.8  0.74 119
PPM 236516     19:48:05.0 -18:38:29  8.5  0.51 118
PPM 236536     19:49:10.3 -19:07:28  9.6  0.04 118
15810          19:49:03.5 -19:05:26 16.9       118
Positions are for J2000

Event circumstances last updated at 2021/10/07 00:35:20 UT

Marc W. Buie, Southwest Research Institute

RECON