RECON: TNO occultation with 559801

Event between (559801) 15DX224 and star GA0840:04597188 with event index number of 2439928

Geocentric closest approach at 2023/07/01 07:13:07 UTC

J2000 position of star is 15:16:48.7 -05:28:17
Equinox of date position of star is 15:18:02.7 -05:33:21
Stellar brightness G=12.0, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 93% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 35.9 AU from the Sun and 35.3 AU from the Earth.
Apparent velocity is 14.3 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 1481 km.
The sky-plane scale is 25587.4 km/arcsec.

The object has an absolute magnitude Hv=6.5
Diameter=289.7 km assuming a 5% albedo -- 20.8 sec chord
Diameter=118.3 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 559801, (2023/07/01 07:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.1 -26:28:56  0.9 27.19   2
27Bet Lib      15:18:16.5 -09:28:05  2.6  3.91  23
PPM 198488     15:22:22.3 -05:54:30  5.4  1.13  25
PPM 198434     15:18:55.5 -05:17:15  7.5  0.35  26
PPM 198403     15:17:09.7 -05:41:52  8.8  0.26  26
559801         15:18:03.3 -05:33:23 12.0        26
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 23.9 km RECON observability=1.0 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)
Kamloops 07:09:17 -15.2 AT Up 25.5 221.4 Low 06:59:20 - 07:19:14 12306
Kelowna 07:09:11 -16.1 AT Up 25.8 222.5 Low 06:59:14 - 07:19:08 12234
Peachland 07:09:13 -16.2 AT Up 26.0 222.3 Low 06:59:16 - 07:19:10 12230
Summerland 07:09:11 -16.3 AT Up 26.1 222.4 Low 06:59:14 - 07:19:08 12218
Penticton 07:09:10 -16.4 AT Up 26.1 222.6 Low 06:59:13 - 07:19:07 12211
Sleaford 07:08:32 -14.8 AT Up 18.0 234.5 Really Low 06:58:35 - 07:18:29 12208
Victoria 07:09:24 -16.8 AT Up 28.4 219.1 Low 06:59:27 - 07:19:21 12195
Oliver 07:09:10 -16.7 AT Up 26.3 222.7 Low 06:59:13 - 07:19:07 12185
Anarchist Mountain Observatory 07:09:09 -16.9 AT Up 26.4 222.9 Low 06:59:12 - 07:19:06 12170
Okanogan 07:09:06 -17.5 AT Up 26.9 222.9 Low 06:59:09 - 07:19:03 12125
Brewster 07:09:06 -17.8 AT Up 27.2 222.8 Low 06:59:09 - 07:19:03 12107
Manson/Chelan 07:09:09 -17.9 AT Up 27.5 222.5 Low 06:59:12 - 07:19:06 12097
Wenatchee 07:09:09 -18.4 Dark Up 28.0 222.5 Low 06:59:12 - 07:19:06 12064
Ellensburg 07:09:06 -18.7 Dark Up 28.4 222.4 Low 06:59:09 - 07:19:03 12036
Yakima 07:09:06 -19.1 Dark Up 28.7 222.6 Low 06:59:09 - 07:19:03 12004
Toppenish/White Swan 07:09:07 -19.3 Dark Up 28.8 222.8 Low 06:59:10 - 07:19:04 11985
The Dalles 07:09:07 -20.0 Dark Up 29.7 222.3 Low 06:59:10 - 07:19:04 11937
PNWRO 07:09:00 -19.9 Dark Up 28.3 224.4 Low 06:59:03 - 07:18:57 11932
Maupin 07:09:06 -20.4 Dark Up 30.0 222.6 Low 06:59:09 - 07:19:03 11902
Sisters 07:09:06 -21.2 Dark Up 30.9 222.4 Up 06:59:09 - 07:19:03 11840
Bend 07:09:05 -21.4 Dark Up 30.9 222.8 Up 06:59:08 - 07:19:02 11817
Oregon Observatory 07:09:05 -21.6 Dark Up 31.1 222.7 Up 06:59:08 - 07:19:02 11805
Chiloquin 07:09:05 -22.8 Dark Up 32.3 222.9 Up 06:59:08 - 07:19:02 11705
Klamath Falls 07:09:04 -23.1 Dark Up 32.5 223.1 Up 06:59:07 - 07:19:01 11676
Cedarville 07:08:55 -24.1 Dark Up 32.2 225.0 Up 06:58:58 - 07:18:52 11590
Fall River/Burney 07:09:00 -24.3 Dark Up 33.1 224.0 Up 06:59:03 - 07:18:57 11571
Greenville 07:08:56 -25.3 Dark Up 33.6 224.8 Up 06:58:59 - 07:18:53 11486
Gimple 07:08:56 -25.3 Dark Up 33.5 224.9 Up 06:58:59 - 07:18:53 11484
Quincy 07:08:56 -25.5 Dark Up 33.7 224.9 Up 06:58:59 - 07:18:53 11469
Portola 07:08:53 -25.7 Dark Up 33.5 225.5 Up 06:58:56 - 07:18:50 11450
Reno 07:08:50 -26.1 Dark Up 33.4 226.2 Up 06:58:53 - 07:18:47 11415
Carson City 07:08:49 -26.4 Dark Up 33.6 226.4 Up 06:58:52 - 07:18:46 11384
Gardnerville 07:08:48 -26.7 Dark Up 33.8 226.6 Up 06:58:51 - 07:18:45 11362
Yerington 07:08:46 -26.7 Dark Up 33.4 227.1 Up 06:58:49 - 07:18:43 11356
Hawthorne 07:08:42 -27.3 Dark Up 33.4 227.8 Up 06:58:45 - 07:18:39 11306
Lee Vining 07:08:44 -27.7 Dark Up 34.1 227.6 Up 06:58:47 - 07:18:41 11265
Dunrhomin 07:07:52 -26.6 Dark Up 24.2 238.9 Low 06:57:55 - 07:17:49 11228
Nikitin 07:07:52 -26.8 Dark Up 24.3 238.9 Low 06:57:55 - 07:17:49 11212
CU-SBO 07:07:52 -26.9 Dark Up 24.4 238.9 Low 06:57:55 - 07:17:49 11208
Bishop 07:08:40 -28.4 Dark Up 34.1 228.6 Up 06:58:43 - 07:18:37 11199
Beatty 07:08:31 -29.2 Dark Up 33.4 230.4 Up 06:58:34 - 07:18:28 11127
Patrick 07:08:15 -31.0 Dark Up 32.5 233.7 Up 06:58:18 - 07:18:12 10939
Laughlin/Bullhead City 07:08:18 -31.2 Dark Up 33.1 233.2 Up 06:58:21 - 07:18:15 10929
Wildwood 07:08:35 -31.6 Dark Up 36.3 230.2 Up 06:58:38 - 07:18:32 10905
Lake Havasu City 07:08:16 -31.9 Dark Up 33.3 233.8 Up 06:58:19 - 07:18:13 10862
Idyllwild 07:08:26 -32.3 Dark Up 35.4 232.1 Up 06:58:29 - 07:18:23 10837
Calipatria 07:08:19 -33.0 Dark Up 34.9 233.5 Up 06:58:22 - 07:18:16 10757
George/Scottsdale 07:08:04 -32.9 Dark Up 32.1 236.3 Up 06:58:07 - 07:18:01 10744
Yuma 07:08:14 -33.6 Dark Up 34.6 234.5 Up 06:58:17 - 07:18:11 10699

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 559801, (2023/07/01 07:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.19   2
27Bet Lib      15:17:00.3 -09:22:59  2.6  3.91  23
PPM 198488     15:21:07.5 -05:49:30  5.4  1.13  25
PPM 198434     15:17:41.1 -05:12:09  7.5  0.35  26
PPM 198403     15:15:55.0 -05:36:44  8.8  0.26  26
559801         15:16:48.7 -05:28:17 12.0        26
Positions are for J2000

Event circumstances last updated at 2023/04/26 04:00:55 UT

Marc W. Buie, Southwest Research Institute

RECON