RECON: TNO occultation with 492338

Event between (492338) 14FW and star GA0680:23075283 with event index number of 2319858

Geocentric closest approach at 2022/06/09 10:30:13 UTC

J2000 position of star is 18:12:35.1 -21:50:54
Equinox of date position of star is 18:13:55.2 -21:50:29
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 82 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 13.2 AU from the Sun and 12.2 AU from the Earth.
The TNO is moving 19.3 km/sec on the sky relative to the star, or, 7.8 arcsec/hr.
The 1-sigma error in the time of the event is 72 seconds.
The 1-sigma cross-track error in the shadow position is 531 km.
The sky-plane scale is 8844.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=59.4 km assuming a 5% albedo -- 3.1 sec chord
Diameter=24.3 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 492338, (2022/06/09 10:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.2 -26:28:47  0.9 23.94  60
Nunki          18:56:39.3 -26:16:01  2.0 10.70  92
14 Sgr         18:15:36.8 -21:42:19  5.4  0.41  83
PPM 267994     18:12:05.4 -22:14:01  7.9  0.58  82
PPM 268068     18:14:35.3 -21:43:18  9.2  0.19  82
492338         18:13:56.0 -21:50:28 17.0        83
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 21.2 km RECON observability=0.6 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:28:21 -9.5 NT Down 15.1 200.5 Really Low 10:21:52 - 10:34:50 3181
Victoria 10:28:28 -12.4 AT Down 17.7 197.9 Really Low 10:21:59 - 10:34:57 3146
Peachland 10:28:17 -10.1 NT Down 15.8 201.1 Really Low 10:21:48 - 10:34:46 3134
Kelowna 10:28:16 -9.9 NT Down 15.6 201.4 Really Low 10:21:47 - 10:34:45 3133
Summerland 10:28:17 -10.1 NT Down 15.9 201.2 Really Low 10:21:48 - 10:34:46 3126
Penticton 10:28:16 -10.2 NT Down 16.0 201.3 Really Low 10:21:47 - 10:34:45 3122
Oliver 10:28:16 -10.4 NT Down 16.3 201.4 Really Low 10:21:47 - 10:34:45 3107
Anarchist Mountain Observatory 10:28:15 -10.5 NT Down 16.4 201.6 Really Low 10:21:46 - 10:34:44 3097
Tonasket 10:28:15 -10.8 NT Down 16.7 201.5 Really Low 10:21:46 - 10:34:44 3084
Okanogan 10:28:15 -11.1 NT Down 17.0 201.4 Really Low 10:21:46 - 10:34:44 3073
Brewster 10:28:15 -11.4 NT Down 17.3 201.3 Really Low 10:21:46 - 10:34:44 3065
Manson/Chelan 10:28:16 -11.7 NT Down 17.6 201.0 Really Low 10:21:47 - 10:34:45 3062
Wenatchee 10:28:16 -12.2 AT Down 18.1 200.8 Really Low 10:21:47 - 10:34:45 3044
Ellensburg 10:28:17 -12.6 AT Down 18.6 200.7 Really Low 10:21:48 - 10:34:46 3030
Yakima 10:28:16 -13.0 AT Down 18.9 200.7 Really Low 10:21:47 - 10:34:45 3012
Toppenish/White Swan 10:28:15 -13.1 AT Down 19.1 200.9 Really Low 10:21:46 - 10:34:44 2998
Goldendale 10:28:17 -13.7 AT Down 19.7 200.6 Really Low 10:21:48 - 10:34:46 2981
The Dalles 10:28:17 -14.0 AT Down 20.0 200.3 Low 10:21:48 - 10:34:46 2977
Sleaford 10:27:40 -2.7 CT Down 9.8 213.3 Really Low 10:21:11 - 10:34:09 2961
Maupin 10:28:17 -14.3 AT Down 20.4 200.4 Low 10:21:48 - 10:34:46 2955
PNWRO 10:28:10 -12.8 AT Down 19.1 202.3 Really Low 10:21:41 - 10:34:39 2953
Sisters 10:28:17 -15.3 AT Down 21.3 200.1 Low 10:21:48 - 10:34:46 2922
Bend 10:28:16 -15.3 AT Down 21.5 200.3 Low 10:21:47 - 10:34:45 2905
Oregon Observatory 10:28:17 -15.5 AT Down 21.7 200.2 Low 10:21:48 - 10:34:46 2899
North Lake 10:28:14 -15.9 AT Down 22.2 200.8 Low 10:21:45 - 10:34:43 2856
Chiloquin 10:28:17 -16.8 AT Down 23.0 200.0 Low 10:21:48 - 10:34:46 2840
Klamath Falls 10:28:16 -17.1 AT Down 23.3 200.1 Low 10:21:47 - 10:34:45 2820
Lakeview 10:28:10 -16.5 AT Down 23.0 201.5 Low 10:21:41 - 10:34:39 2790
Cedarville 10:28:09 -17.0 AT Down 23.6 201.8 Low 10:21:40 - 10:34:38 2751
Fall River/Burney 10:28:13 -17.9 AT Down 24.3 200.7 Low 10:21:44 - 10:34:42 2749
Susanville 10:28:10 -18.1 Dark Down 24.7 201.5 Low 10:21:41 - 10:34:39 2699
Greenville 10:28:11 -18.4 Dark Down 25.1 201.3 Low 10:21:42 - 10:34:40 2690
Gimple 10:28:10 -18.4 Dark Down 25.0 201.3 Low 10:21:41 - 10:34:39 2688
Quincy 10:28:11 -18.6 Dark Down 25.3 201.3 Low 10:21:42 - 10:34:40 2678
Portola 10:28:09 -18.5 Dark Down 25.2 201.8 Low 10:21:40 - 10:34:38 2661
Reno 10:28:06 -18.4 Dark Down 25.3 202.5 Low 10:21:37 - 10:34:35 2633
Carson City 10:28:05 -18.7 Dark Down 25.6 202.5 Low 10:21:36 - 10:34:34 2611
Gardnerville 10:28:05 -18.9 Dark Down 25.8 202.6 Low 10:21:36 - 10:34:34 2596
Yerington 10:28:02 -18.6 Dark Down 25.6 203.2 Low 10:21:33 - 10:34:31 2586
Hawthorne 10:28:00 -18.7 Dark Down 25.9 203.8 Low 10:21:31 - 10:34:29 2547
Lee Vining 10:28:01 -19.4 Dark Down 26.6 203.4 Low 10:21:32 - 10:34:30 2525
Tonopah 10:27:54 -18.4 Dark Down 25.9 205.2 Low 10:21:25 - 10:34:23 2488
Bishop 10:27:58 -19.5 Dark Down 26.9 204.2 Low 10:21:29 - 10:34:27 2472
Beatty 10:27:51 -19.1 Dark Down 26.8 205.9 Low 10:21:22 - 10:34:20 2406
Indian Springs 10:27:46 -18.8 Dark Down 26.7 207.0 Low 10:21:17 - 10:34:15 2360
Dunrhomin 10:27:13 -10.5 NT Down 19.3 215.6 Really Low 10:20:44 - 10:33:42 2326
CU-SBO 10:27:12 -10.7 NT Down 19.6 215.5 Really Low 10:20:43 - 10:33:41 2313
Henderson 10:27:43 -18.8 Dark Down 26.9 207.8 Low 10:21:14 - 10:34:12 2309
Wildwood 10:27:56 -22.2 Dark Down 29.9 204.8 Low 10:21:27 - 10:34:25 2267
Laughlin/Bullhead City 10:27:40 -19.3 Dark Down 27.5 208.3 Low 10:21:11 - 10:34:09 2242
Patrick 10:27:38 -18.7 Dark Down 27.0 208.9 Low 10:21:09 - 10:34:07 2241
Kingman/Dolan Springs 10:27:38 -19.0 Dark Down 27.3 208.8 Low 10:21:09 - 10:34:07 2231
Mohave Valley 10:27:40 -19.5 Dark Down 27.7 208.4 Low 10:21:11 - 10:34:09 2224
Idyllwild 10:27:48 -21.5 Dark Down 29.6 206.7 Low 10:21:19 - 10:34:17 2199
Lake Havasu City 10:27:38 -19.6 Dark Down 28.0 208.7 Low 10:21:09 - 10:34:07 2191
Parker 10:27:38 -19.9 Dark Down 28.3 208.9 Low 10:21:09 - 10:34:07 2166
Calipatria 10:27:42 -21.3 Dark Down 29.7 208.0 Low 10:21:13 - 10:34:11 2128
Yuma 10:27:38 -21.2 Dark Down 29.7 208.9 Low 10:21:09 - 10:34:07 2076
George/Scottsdale 10:27:28 -18.9 Dark Down 27.7 211.2 Low 10:20:59 - 10:33:57 2075

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 492338, (2022/06/09 10:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.94  60
Nunki          18:55:15.9 -26:17:49  2.0 10.70  92
14 Sgr         18:14:15.9 -21:42:48  5.4  0.41  83
PPM 267994     18:10:44.2 -22:14:23  7.9  0.58  82
PPM 268068     18:13:14.3 -21:43:45  9.2  0.19  82
492338         18:12:35.1 -21:50:54 17.0        82
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:04:17 UT

Marc W. Buie, Southwest Research Institute

RECON