RECON: TNO occultation with 492338

Event between (492338) 14FW and star GA0680:24243339 with event index number of 2319695

Geocentric closest approach at 2022/05/09 08:53:53 UTC

J2000 position of star is 18:18:16.6 -21:40:25
Equinox of date position of star is 18:19:36.6 -21:39:49
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 131 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 13.1 AU from the Sun and 12.4 AU from the Earth.
The TNO is moving 11.3 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 125 seconds.
The 1-sigma cross-track error in the shadow position is 593 km.
The sky-plane scale is 8984.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=59.4 km assuming a 5% albedo -- 5.3 sec chord
Diameter=24.3 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 492338, (2022/05/09 08:54UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.9 -26:28:47  0.9 25.26 107
Nunki          18:56:39.0 -26:16:01  2.0  9.63 140
14 Sgr         18:15:36.5 -21:42:19  5.4  0.93 130
PPM 268179     18:18:30.6 -22:09:37  8.3  0.56 131
PPM 268225     18:20:13.6 -21:27:02  9.2  0.26 131
492338         18:19:37.2 -21:39:48 15.2       131
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 15.1 km RECON observability=0.5 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)
Sleaford 08:54:25 -16.2 AT Up 14.3 161.1 Really Low 08:43:28 - 09:05:22 6795
Kamloops 08:55:46 -20.8 Dark Up 11.7 148.1 Really Low 08:44:49 - 09:06:43 6732
Kelowna 08:55:46 -21.4 Dark Up 12.7 148.8 Really Low 08:44:49 - 09:06:43 6711
Peachland 08:55:48 -21.5 Dark Up 12.7 148.5 Really Low 08:44:51 - 09:06:45 6706
Summerland 08:55:48 -21.7 Dark Up 12.9 148.6 Really Low 08:44:51 - 09:06:45 6702
Penticton 08:55:48 -21.7 Dark Up 13.0 148.7 Really Low 08:44:51 - 09:06:45 6700
Oliver 08:55:49 -22.1 Dark Up 13.3 148.7 Really Low 08:44:52 - 09:06:46 6688
Anarchist Mountain Observatory 08:55:49 -22.2 Dark Up 13.5 148.8 Really Low 08:44:52 - 09:06:46 6684
Tonasket 08:55:50 -22.5 Dark Up 13.7 148.7 Really Low 08:44:53 - 09:06:47 6672
Okanogan 08:55:54 -22.8 Dark Up 14.0 148.5 Really Low 08:44:57 - 09:06:51 6660
Brewster 08:55:56 -23.1 Dark Up 14.1 148.3 Really Low 08:44:59 - 09:06:53 6650
Victoria 08:56:13 -23.3 Dark Up 12.5 145.3 Really Low 08:45:16 - 09:07:10 6644
Manson/Chelan 08:55:59 -23.4 Dark Up 14.2 148.0 Really Low 08:45:02 - 09:06:56 6640
Wenatchee 08:56:01 -23.9 Dark Up 14.5 147.8 Really Low 08:45:04 - 09:06:58 6622
Ellensburg 08:56:05 -24.3 Dark Up 14.8 147.5 Really Low 08:45:08 - 09:07:02 6606
Yakima 08:56:07 -24.7 Dark Up 15.2 147.5 Really Low 08:45:10 - 09:07:04 6590
Toppenish/White Swan 08:56:07 -24.9 Dark Up 15.4 147.6 Really Low 08:45:10 - 09:07:04 6583
PNWRO 08:56:00 -25.0 Dark Up 16.3 148.9 Really Low 08:45:03 - 09:06:57 6576
Goldendale 08:56:11 -25.5 Dark Up 15.7 147.2 Really Low 08:45:14 - 09:07:08 6559
The Dalles 08:56:15 -25.8 Dark Up 15.8 146.8 Really Low 08:45:18 - 09:07:12 6548
Maupin 08:56:15 -26.2 Dark Up 16.2 146.8 Really Low 08:45:18 - 09:07:12 6532
Sisters 08:56:22 -27.1 Dark Up 16.7 146.3 Really Low 08:45:25 - 09:07:19 6493
Bend 08:56:22 -27.3 Dark Up 17.0 146.5 Really Low 08:45:25 - 09:07:19 6484
Oregon Observatory 08:56:23 -27.5 Dark Up 17.1 146.3 Really Low 08:45:26 - 09:07:20 6476
North Lake 08:56:23 -28.0 Dark Up 17.9 146.7 Really Low 08:45:26 - 09:07:20 6451
Chiloquin 08:56:32 -28.8 Dark Up 18.0 145.8 Really Low 08:45:35 - 09:07:29 6415
Lakeview 08:56:25 -28.9 Dark Up 19.0 147.0 Really Low 08:45:28 - 09:07:22 6407
Klamath Falls 08:56:33 -29.1 Dark Up 18.4 145.8 Really Low 08:45:36 - 09:07:30 6400
Cedarville 08:56:26 -29.5 Dark Up 19.6 147.0 Really Low 08:45:29 - 09:07:23 6377
Fall River/Burney 08:56:35 -30.2 Dark Up 19.5 145.9 Really Low 08:45:38 - 09:07:32 6346
Dunrhomin 08:54:55 -26.2 Dark Down 25.6 160.6 Low 08:43:58 - 09:05:52 6336
CU-SBO 08:54:56 -26.4 Dark Down 25.8 160.4 Low 08:43:59 - 09:05:53 6324
Susanville 08:56:34 -30.7 Dark Up 20.3 146.4 Low 08:45:37 - 09:07:31 6321
Gimple 08:56:37 -31.0 Dark Up 20.5 146.2 Low 08:45:40 - 09:07:34 6305
Greenville 08:56:37 -31.0 Dark Up 20.5 146.1 Low 08:45:40 - 09:07:34 6305
Quincy 08:56:38 -31.2 Dark Up 20.6 146.1 Low 08:45:41 - 09:07:35 6295
Portola 08:56:36 -31.2 Dark Up 20.9 146.5 Low 08:45:39 - 09:07:33 6292
Reno 08:56:33 -31.3 Dark Up 21.4 147.0 Low 08:45:36 - 09:07:30 6282
Carson City 08:56:34 -31.7 Dark Up 21.7 146.9 Low 08:45:37 - 09:07:31 6264
Yerington 08:56:31 -31.7 Dark Up 22.2 147.4 Low 08:45:34 - 09:07:28 6257
Gardnerville 08:56:34 -31.9 Dark Up 22.0 146.9 Low 08:45:37 - 09:07:31 6252
Hawthorne 08:56:30 -32.0 Dark Up 22.8 147.8 Low 08:45:33 - 09:07:27 6236
Tonopah 08:56:21 -32.1 Dark Up 23.7 148.9 Low 08:45:24 - 09:07:18 6218
Lee Vining 08:56:35 -32.7 Dark Up 23.1 147.3 Low 08:45:38 - 09:07:32 6204
Bishop 08:56:32 -33.0 Dark Up 23.9 147.8 Low 08:45:35 - 09:07:29 6175
Beatty 08:56:25 -33.0 Dark Up 24.9 149.1 Low 08:45:28 - 09:07:22 6156
Indian Springs 08:56:17 -33.0 Dark Up 25.6 150.0 Low 08:45:20 - 09:07:14 6142
Henderson 08:56:15 -33.3 Dark Up 26.4 150.5 Low 08:45:18 - 09:07:12 6114
Patrick 08:56:09 -33.5 Dark Up 27.3 151.4 Low 08:45:12 - 09:07:06 6081
Kingman/Dolan Springs 08:56:11 -33.8 Dark Up 27.5 151.2 Low 08:45:14 - 09:07:08 6068
Laughlin/Bullhead City 08:56:14 -34.0 Dark Up 27.3 150.7 Low 08:45:17 - 09:07:11 6065
Mohave Valley 08:56:16 -34.2 Dark Up 27.5 150.6 Low 08:45:19 - 09:07:13 6049
Lake Havasu City 08:56:14 -34.5 Dark Up 28.0 150.7 Low 08:45:17 - 09:07:11 6026
Parker 08:56:17 -34.8 Dark Up 28.3 150.7 Low 08:45:20 - 09:07:14 6006
Wildwood 08:56:46 -36.2 Dark Up 26.5 146.8 Low 08:45:49 - 09:07:43 5987
George/Scottsdale 08:56:00 -34.4 Dark Up 29.6 152.9 Low 08:45:03 - 09:06:57 5985
Idyllwild 08:56:34 -36.0 Dark Up 27.7 148.4 Low 08:45:37 - 09:07:31 5975
Calipatria 08:56:29 -36.2 Dark Up 28.7 149.3 Low 08:45:32 - 09:07:26 5941
Yuma 08:56:23 -36.3 Dark Up 29.4 150.0 Low 08:45:26 - 09:07:20 5917

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, (2022/05/09 08:54UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.26 107
Nunki          18:55:15.9 -26:17:49  2.0  9.63 140
14 Sgr         18:14:15.9 -21:42:48  5.4  0.93 130
PPM 268179     18:17:09.7 -22:10:12  8.3  0.56 131
PPM 268225     18:18:53.1 -21:27:40  9.2  0.26 131
492338         18:18:16.6 -21:40:25 15.2       131
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:01:53 UT

Marc W. Buie, Southwest Research Institute

RECON