RECON: TNO occultation with 01KO77

Event between 01KO77 and star GA0760:11994357 with event index number of 1177912

Geocentric closest approach at 2022/08/23 03:22:40 UTC

J2000 position of star is 18:05:47.0 -13:29:35
Equinox of date position of star is 18:07:02.5 -13:29:23
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 37.6 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 10.6 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 1441 seconds.
The 1-sigma cross-track error in the shadow position is 5616 km.
The sky-plane scale is 26890.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=195.0 km assuming a 5% albedo -- 18.4 sec chord
Diameter=79.6 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 01KO77, (2022/08/23 03:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:48.0 -26:28:49  0.9 26.01 147
35Eta Oph      17:11:40.7 -15:45:05  2.6 13.58 152
PPM 234113     18:11:00.5 -13:55:44  6.4  1.05 163
PPM 233919     18:02:54.0 -13:35:08  8.5  1.02 161
PPM 234024     18:07:18.6 -13:38:22  9.9  0.16 162
PPM 234016     18:07:05.3 -13:33:20 10.6  0.07 162
01KO77         18:07:03.9 -13:29:23 17.0       162
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 0.6 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.1 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 03:21:22 -2.9 CT Down 25.2 169.2 Low 03:06:22 - 03:36:22 2442
Kelowna 03:21:19 -3.8 CT Down 26.1 170.1 Low 03:06:19 - 03:36:19 2392
Peachland 03:21:21 -3.7 CT Down 26.2 169.7 Low 03:06:21 - 03:36:21 2392
Victoria 03:21:50 -1.9 CT Down 26.9 165.8 Low 03:06:50 - 03:36:50 2392
Summerland 03:21:22 -3.8 CT Down 26.4 169.8 Low 03:06:22 - 03:36:22 2383
Penticton 03:21:22 -3.9 CT Down 26.4 169.9 Low 03:06:22 - 03:36:22 2378
Oliver 03:21:24 -4.0 CT Down 26.8 169.9 Low 03:06:24 - 03:36:24 2363
Anarchist Mountain Observatory 03:21:21 -4.2 CT Down 27.0 170.1 Low 03:06:21 - 03:36:21 2352
Tonasket 03:21:23 -4.3 CT Down 27.3 170.0 Low 03:06:23 - 03:36:23 2338
Okanogan 03:21:24 -4.3 CT Down 27.6 169.8 Low 03:06:24 - 03:36:24 2325
Brewster 03:21:26 -4.3 CT Down 27.8 169.6 Low 03:06:26 - 03:36:26 2315
Manson/Chelan 03:21:30 -4.1 CT Down 28.0 169.2 Low 03:06:30 - 03:36:30 2311
Wenatchee 03:21:32 -4.2 CT Down 28.4 169.0 Low 03:06:32 - 03:36:32 2291
Ellensburg 03:21:34 -4.2 CT Down 28.8 168.7 Low 03:06:34 - 03:36:34 2274
Sleaford 03:19:52 -10.0 NT Down 24.3 184.3 Low 03:04:52 - 03:34:52 2258
Yakima 03:21:35 -4.4 CT Down 29.2 168.6 Low 03:06:35 - 03:36:35 2254
Toppenish/White Swan 03:21:35 -4.6 CT Down 29.5 168.8 Low 03:06:35 - 03:36:35 2241
Goldendale 03:21:39 -4.5 CT Down 29.9 168.3 Low 03:06:39 - 03:36:39 2220
The Dalles 03:21:43 -4.4 CT Down 30.1 167.8 Up 03:06:43 - 03:36:43 2214
PNWRO 03:21:26 -5.7 CT Down 30.0 170.4 Up 03:06:26 - 03:36:26 2197
Maupin 03:21:42 -4.6 CT Down 30.5 167.9 Up 03:06:42 - 03:36:42 2191
Sisters 03:21:49 -4.6 CT Down 31.3 167.3 Up 03:06:49 - 03:36:49 2153
Bend 03:21:48 -4.9 CT Down 31.6 167.5 Up 03:06:48 - 03:36:48 2136
Oregon Observatory 03:21:49 -4.8 CT Down 31.7 167.4 Up 03:06:49 - 03:36:49 2129
North Lake 03:21:47 -5.4 CT Down 32.5 167.9 Up 03:06:47 - 03:36:47 2085
Chiloquin 03:21:56 -5.0 CT Down 33.0 166.7 Up 03:06:56 - 03:36:56 2063
Klamath Falls 03:21:56 -5.2 CT Down 33.3 166.8 Up 03:06:56 - 03:36:56 2042
Lakeview 03:21:46 -6.2 NT Down 33.6 168.4 Up 03:06:46 - 03:36:46 2015
Cedarville 03:21:47 -6.6 NT Down 34.2 168.5 Up 03:06:47 - 03:36:47 1974
Fall River/Burney 03:21:56 -5.9 CT Down 34.5 167.0 Up 03:06:56 - 03:36:56 1967
Susanville 03:21:52 -6.6 NT Down 35.3 167.8 Up 03:06:52 - 03:36:52 1917
Greenville 03:21:56 -6.5 NT Down 35.5 167.4 Up 03:06:56 - 03:36:56 1905
Gimple 03:21:54 -6.6 NT Down 35.5 167.5 Up 03:06:54 - 03:36:54 1904
Quincy 03:21:56 -6.6 NT Down 35.7 167.4 Up 03:06:56 - 03:36:56 1893
Portola 03:21:54 -7.0 NT Down 35.9 167.9 Up 03:06:54 - 03:36:54 1877
Reno 03:21:49 -7.5 NT Down 36.2 168.6 Up 03:06:49 - 03:36:49 1848
Carson City 03:21:50 -7.7 NT Down 36.6 168.6 Up 03:06:50 - 03:36:50 1826
Gardnerville 03:21:50 -7.8 NT Down 36.8 168.6 Up 03:06:50 - 03:36:50 1810
Yerington 03:21:45 -8.2 NT Down 36.9 169.3 Up 03:06:45 - 03:36:45 1801
Hawthorne 03:21:42 -8.8 NT Down 37.4 169.9 Up 03:06:42 - 03:36:42 1762
Lee Vining 03:21:48 -8.6 NT Down 37.9 169.2 Up 03:06:48 - 03:36:48 1736
Tonopah 03:21:32 -9.9 NT Down 38.0 171.5 Up 03:06:32 - 03:36:32 1704
Bishop 03:21:44 -9.4 NT Down 38.6 170.0 Up 03:06:44 - 03:36:44 1682
Beatty 03:21:32 -10.7 NT Down 39.2 171.9 Up 03:06:32 - 03:36:32 1619
Dunrhomin 03:19:58 -16.9 AT Down 36.1 185.8 Up 03:04:58 - 03:34:58 1584
Indian Springs 03:21:24 -11.6 NT Down 39.7 173.2 Up 03:06:24 - 03:36:24 1574
CU-SBO 03:20:00 -17.0 AT Down 36.3 185.7 Up 03:05:00 - 03:35:00 1570
Henderson 03:21:21 -12.3 AT Down 40.3 174.0 Up 03:06:21 - 03:36:21 1523
Wildwood 03:21:53 -10.5 NT Down 41.8 169.3 Up 03:06:53 - 03:36:53 1465
Patrick 03:21:12 -13.4 AT Down 41.0 175.4 Up 03:06:12 - 03:36:12 1456
Laughlin/Bullhead City 03:21:18 -13.0 AT Down 41.2 174.5 Up 03:06:18 - 03:36:18 1454
Kingman/Dolan Springs 03:21:14 -13.4 AT Down 41.2 175.1 Up 03:06:14 - 03:36:14 1445
Mohave Valley 03:21:19 -13.1 AT Down 41.4 174.5 Up 03:06:19 - 03:36:19 1435
Lake Havasu City 03:21:18 -13.5 AT Down 41.9 174.7 Up 03:06:18 - 03:36:18 1401
Idyllwild 03:21:39 -12.0 AT Down 42.4 171.6 Up 03:06:39 - 03:36:39 1400
Parker 03:21:19 -13.6 AT Down 42.2 174.8 Up 03:06:19 - 03:36:19 1376
Calipatria 03:21:31 -13.1 AT Down 43.1 173.1 Up 03:06:31 - 03:36:31 1330
George/Scottsdale 03:21:00 -15.6 AT Down 42.8 177.8 Up 03:06:00 - 03:36:00 1290
Yuma 03:21:25 -14.0 AT Down 43.6 174.2 Up 03:06:25 - 03:36:25 1279

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 01KO77, (2022/08/23 03:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.01 147
35Eta Oph      17:10:22.7 -15:43:29  2.6 13.58 152
PPM 234113     18:09:43.4 -13:56:04  6.4  1.05 163
PPM 233919     18:01:37.0 -13:35:12  8.5  1.02 161
PPM 234024     18:06:01.7 -13:38:35  9.9  0.16 162
PPM 234016     18:05:48.3 -13:33:33 10.6  0.07 162
01KO77         18:05:47.0 -13:29:35 17.0       162
Positions are for J2000

Event circumstances last updated at 2022/04/02 01:15:16 UT

Marc W. Buie, Southwest Research Institute

RECON