RECON: TNO occultation with 469707

Event between (469707) 05GB187 and star GA0760:05890631 with event index number of 1200759

Geocentric closest approach at 2022/07/15 04:08:39 UTC

J2000 position of star is 16:36:07.3 -13:30:35
Equinox of date position of star is 16:37:22.2 -13:33:13
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 64 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 31.9 AU from the Sun and 31.2 AU from the Earth.
The TNO is moving 15.9 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 99 seconds.
The 1-sigma cross-track error in the shadow position is 1147 km.
The sky-plane scale is 22624.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 13.5 sec chord
Diameter=87.7 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469707, (2022/07/15 04:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.6 -26:28:48  0.9 13.02  63
13Zet Oph      16:38:24.1 -10:36:40  2.6  2.95  65
PPM 232182     16:49:43.9 -14:56:51  6.2  3.30  61
PPM 231910     16:38:01.3 -13:45:55  8.1  0.26  64
PPM 231907     16:37:50.6 -13:38:50  9.3  0.14  64
469707         16:37:23.3 -13:33:16 15.4        64
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 94.5 km RECON observability=0.1 and success probability=9.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:08:52 -6.5 NT Down 24.4 180.3 Low 04:00:07 - 04:17:38 2342
Kamloops 04:09:54 -0.9 CT Down 24.7 165.1 Low 04:01:08 - 04:18:39 2212
Kelowna 04:09:51 -1.9 CT Down 25.6 165.9 Low 04:01:06 - 04:18:37 2177
Peachland 04:09:52 -1.8 CT Down 25.7 165.6 Low 04:01:07 - 04:18:38 2169
Summerland 04:09:52 -1.9 CT Down 25.8 165.7 Low 04:01:07 - 04:18:38 2162
Penticton 04:09:52 -2.0 CT Down 25.9 165.8 Low 04:01:06 - 04:18:37 2159
Oliver 04:09:53 -2.2 CT Down 26.2 165.8 Low 04:01:07 - 04:18:38 2141
Anarchist Mountain Observatory 04:09:51 -2.5 CT Down 26.4 165.9 Low 04:01:06 - 04:18:37 2134
Tonasket 04:09:52 -2.6 CT Down 26.7 165.8 Low 04:01:07 - 04:18:38 2117
Okanogan 04:09:54 -2.7 CT Down 27.0 165.6 Low 04:01:08 - 04:18:39 2098
Brewster 04:09:54 -2.8 CT Down 27.3 165.4 Low 04:01:09 - 04:18:40 2082
Victoria 04:10:10 -0.6 Sun up Down 26.2 161.6 Low 04:01:24 - 04:18:55 2080
Manson/Chelan 04:09:57 -2.7 CT Down 27.4 165.0 Low 04:01:11 - 04:18:42 2068
Wenatchee 04:09:57 -2.9 CT Down 27.8 164.7 Low 04:01:12 - 04:18:43 2041
Ellensburg 04:09:59 -3.1 CT Down 28.2 164.4 Low 04:01:14 - 04:18:45 2017
Yakima 04:10:00 -3.3 CT Down 28.6 164.4 Low 04:01:14 - 04:18:45 1994
Toppenish/White Swan 04:09:59 -3.5 CT Down 28.8 164.5 Low 04:01:14 - 04:18:45 1983
PNWRO 04:09:52 -4.5 CT Down 29.4 166.1 Low 04:01:07 - 04:18:38 1972
Goldendale 04:10:02 -3.6 CT Down 29.3 164.0 Low 04:01:16 - 04:18:47 1948
The Dalles 04:10:03 -3.5 CT Down 29.4 163.5 Low 04:01:18 - 04:18:49 1932
Maupin 04:10:04 -3.8 CT Down 29.8 163.6 Low 04:01:18 - 04:18:49 1909
Sisters 04:10:07 -4.1 CT Down 30.6 162.9 Up 04:01:22 - 04:18:53 1853
Bend 04:10:06 -4.4 CT Down 30.9 163.2 Up 04:01:20 - 04:18:51 1841
Oregon Observatory 04:10:06 -4.4 CT Down 31.0 163.0 Up 04:01:21 - 04:18:52 1829
North Lake 04:10:05 -5.1 CT Down 31.7 163.5 Up 04:01:19 - 04:18:50 1794
Chiloquin 04:10:10 -4.9 CT Down 32.2 162.3 Up 04:01:25 - 04:18:56 1744
Lakeview 04:10:03 -6.0 NT Down 32.9 163.9 Up 04:01:18 - 04:18:49 1731
Klamath Falls 04:10:10 -5.2 CT Down 32.5 162.3 Up 04:01:24 - 04:18:55 1723
Cedarville 04:10:03 -6.5 NT Down 33.5 164.0 Up 04:01:17 - 04:18:48 1691
Dunrhomin 04:08:46 -15.6 AT Up 36.2 181.2 Up 04:00:01 - 04:17:32 1683
CU-SBO 04:08:47 -15.8 AT Up 36.5 181.1 Up 04:00:02 - 04:17:33 1666
Fall River/Burney 04:10:10 -6.1 NT Down 33.7 162.5 Up 04:01:24 - 04:18:55 1650
Susanville 04:10:07 -6.9 NT Down 34.5 163.2 Up 04:01:21 - 04:18:52 1614
Gimple 04:10:08 -6.9 NT Down 34.7 162.9 Up 04:01:22 - 04:18:53 1594
Greenville 04:10:08 -6.9 NT Down 34.7 162.8 Up 04:01:23 - 04:18:54 1593
Quincy 04:10:08 -7.0 NT Down 34.9 162.8 Up 04:01:23 - 04:18:54 1580
Portola 04:10:06 -7.4 NT Down 35.1 163.3 Up 04:01:21 - 04:18:52 1575
Reno 04:10:03 -7.9 NT Down 35.5 164.0 Up 04:01:18 - 04:18:49 1562
Carson City 04:10:03 -8.2 NT Down 35.9 164.0 Up 04:01:18 - 04:18:49 1538
Yerington 04:10:00 -8.7 NT Down 36.2 164.7 Up 04:01:15 - 04:18:46 1529
Gardnerville 04:10:03 -8.3 NT Down 36.1 164.0 Up 04:01:18 - 04:18:49 1521
Hawthorne 04:09:58 -9.3 NT Down 36.7 165.2 Up 04:01:12 - 04:18:43 1501
Tonopah 04:09:51 -10.4 NT Down 37.5 166.8 Up 04:01:05 - 04:18:36 1479
Lee Vining 04:10:01 -9.3 NT Down 37.2 164.5 Up 04:01:15 - 04:18:46 1459
Bishop 04:09:57 -10.1 NT Down 37.9 165.2 Up 04:01:12 - 04:18:43 1421
Beatty 04:09:49 -11.4 NT Down 38.7 167.1 Up 04:01:03 - 04:18:34 1400
Indian Springs 04:09:43 -12.3 AT Down 39.2 168.3 Up 04:00:58 - 04:18:29 1383
Henderson 04:09:40 -13.0 AT Down 39.8 169.1 Up 04:00:54 - 04:18:25 1349
Patrick 04:09:34 -14.1 AT Down 40.6 170.4 Up 04:00:48 - 04:18:19 1310
Kingman/Dolan Springs 04:09:35 -14.1 AT Down 40.8 170.1 Up 04:00:50 - 04:18:21 1293
Laughlin/Bullhead City 04:09:38 -13.8 AT Down 40.7 169.5 Up 04:00:52 - 04:18:23 1287
Mohave Valley 04:09:38 -14.0 AT Down 41.0 169.4 Up 04:00:52 - 04:18:23 1267
Lake Havasu City 04:09:37 -14.4 AT Down 41.4 169.7 Up 04:00:51 - 04:18:22 1239
Parker 04:09:37 -14.7 AT Down 41.8 169.7 Up 04:00:51 - 04:18:22 1213
George/Scottsdale 04:09:23 -16.5 AT Up 42.5 172.7 Up 04:00:38 - 04:18:09 1195
Wildwood 04:10:01 -12.0 NT Down 41.0 164.3 Up 04:01:15 - 04:18:46 1180
Idyllwild 04:09:51 -13.4 AT Down 41.8 166.6 Up 04:01:05 - 04:18:36 1167
Calipatria 04:09:44 -14.5 AT Down 42.6 167.9 Up 04:00:59 - 04:18:30 1128
Yuma 04:09:39 -15.4 AT Down 43.1 169.0 Up 04:00:54 - 04:18:25 1100

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 469707, (2022/07/15 04:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.02  63
13Zet Oph      16:37:09.6 -10:34:01  2.6  2.95  65
PPM 232182     16:48:27.0 -14:54:34  6.2  3.30  61
PPM 231910     16:36:45.1 -13:43:15  8.1  0.26  64
PPM 231907     16:36:34.4 -13:36:11  9.3  0.14  64
469707         16:36:07.3 -13:30:35 15.4        64
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:06:41 UT

Marc W. Buie, Southwest Research Institute

RECON