RECON: TNO occultation with 470443

Event between (470443) 07XV50 and star GA1240:01650094 with event index number of 2230712

Geocentric closest approach at 2023/02/08 08:12:12 UTC

J2000 position of star is 05:11:25.2 +34:03:33
Equinox of date position of star is 05:12:56.2 +34:05:09
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon. Moon is 94% illuminated.
Apparent brightness V=21.4

[RECON map]
Object is 47.1 AU from the Sun and 46.6 AU from the Earth.
Apparent velocity is 12.2 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 310 seconds.
The 1-sigma cross-track error in the shadow position is 3143 km.
The sky-plane scale is 33791.4 km/arcsec.

The object has an absolute magnitude Hv=4.6
Diameter=717.8 km assuming a 5% albedo -- 58.9 sec chord
Diameter=293.0 km assuming a 30% albedo -- 24.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 470443, (2023/02/08 08:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.9 +16:33:14  0.8 19.28  98
3Iot Aur       04:58:30.1 +33:12:02  2.7  3.13  90
17 Aur         05:19:50.4 +33:47:25  6.1  1.46  86
PPM 070103     05:17:25.1 +34:26:48  8.0  0.99  86
PPM 070018     05:12:59.1 +34:07:51 10.0  0.05  87
470443         05:12:56.7 +34:05:09 14.9        87
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 2.9 sigma about the mid-time.
The median site spacing is 26.9 km RECON observability=1.0 and success probability=8.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:05:30 -51.8 Dark Up 34.5 282.9 Up 07:50:30 - 08:20:30 6830
Kamloops 08:06:10 -54.3 Dark Up 43.1 273.9 Up 07:51:10 - 08:21:10 6341
Kelowna 08:06:05 -55.2 Dark Up 42.5 275.2 Up 07:51:05 - 08:21:05 6275
Peachland 08:06:05 -55.3 Dark Up 42.7 275.1 Up 07:51:05 - 08:21:05 6257
Summerland 08:06:05 -55.4 Dark Up 42.6 275.3 Up 07:51:05 - 08:21:05 6244
Penticton 08:06:03 -55.5 Dark Up 42.5 275.5 Up 07:51:03 - 08:21:03 6239
Oliver 08:06:00 -55.8 Dark Up 42.5 275.8 Up 07:51:00 - 08:21:00 6202
Anarchist Mountain Observatory 08:06:01 -56.0 Dark Up 42.4 276.1 Up 07:51:01 - 08:21:01 6189
Okanogan 08:05:59 -56.6 Dark Up 42.5 276.5 Up 07:50:59 - 08:20:59 6117
Brewster 08:05:59 -56.9 Dark Up 42.6 276.6 Up 07:50:59 - 08:20:59 6084
Victoria 08:06:15 -56.2 Dark Up 45.0 273.8 Up 07:51:15 - 08:21:15 6057
Manson/Chelan 08:06:00 -57.1 Dark Up 42.8 276.6 Up 07:51:00 - 08:21:00 6055
Wenatchee 08:06:00 -57.6 Dark Up 42.8 276.9 Up 07:51:00 - 08:21:00 6001
Ellensburg 08:05:58 -58.0 Dark Up 42.9 277.1 Up 07:50:58 - 08:20:58 5953
Yakima 08:05:59 -58.4 Dark Up 42.9 277.5 Up 07:50:59 - 08:20:59 5910
Toppenish/White Swan 08:05:57 -58.6 Dark Up 42.8 277.8 Up 07:50:57 - 08:20:57 5891
PNWRO 08:05:50 -59.0 Dark Up 41.7 279.0 Up 07:50:50 - 08:20:50 5885
The Dalles 08:05:58 -59.3 Dark Up 43.2 278.0 Up 07:50:58 - 08:20:58 5792
Maupin 08:05:57 -59.7 Dark Up 43.1 278.5 Up 07:50:57 - 08:20:57 5750
Dunrhomin 08:04:44 -62.5 Dark Up 30.7 290.5 Up 07:49:44 - 08:19:44 5692
Nikitin 08:04:45 -62.7 Dark Up 30.7 290.6 Up 07:49:45 - 08:19:45 5673
CU-SBO 08:04:42 -62.8 Dark Up 30.7 290.6 Up 07:49:42 - 08:19:42 5663
Sisters 08:05:55 -60.6 Dark Up 43.3 279.0 Up 07:50:55 - 08:20:55 5646
Bend 08:05:54 -60.8 Dark Up 43.1 279.3 Up 07:50:54 - 08:20:54 5626
Oregon Observatory 08:05:53 -61.0 Dark Up 43.1 279.4 Up 07:50:53 - 08:20:53 5605
Chiloquin 08:05:53 -62.3 Dark Up 43.2 280.4 Up 07:50:53 - 08:20:53 5456
Klamath Falls 08:05:54 -62.6 Dark Up 43.1 280.8 Up 07:50:54 - 08:20:54 5421
Cedarville 08:05:43 -63.4 Dark Up 41.8 282.2 Up 07:50:43 - 08:20:43 5383
Fall River/Burney 08:05:47 -63.8 Dark Up 42.6 282.0 Up 07:50:47 - 08:20:47 5303
Gimple 08:05:42 -64.8 Dark Up 42.0 283.1 Up 07:50:42 - 08:20:42 5219
Greenville 08:05:44 -64.8 Dark Up 42.1 283.0 Up 07:50:44 - 08:20:44 5217
Quincy 08:05:44 -65.0 Dark Up 42.0 283.2 Up 07:50:44 - 08:20:44 5195
Portola 08:05:41 -65.1 Dark Up 41.6 283.6 Up 07:50:41 - 08:20:41 5193
Reno 08:05:37 -65.4 Dark Up 41.1 284.1 Up 07:50:37 - 08:20:37 5180
Carson City 08:05:38 -65.8 Dark Up 41.0 284.4 Up 07:50:38 - 08:20:38 5143
Yerington 08:05:33 -66.0 Dark Up 40.5 284.9 Up 07:50:33 - 08:20:33 5138
Gardnerville 08:05:36 -66.0 Dark Up 40.9 284.6 Up 07:50:36 - 08:20:36 5118
Hawthorne 08:05:30 -66.5 Dark Up 40.0 285.5 Up 07:50:30 - 08:20:30 5102
Lee Vining 08:05:30 -67.1 Dark Up 40.2 285.7 Up 07:50:30 - 08:20:30 5029
Bishop 08:05:27 -67.7 Dark Up 39.5 286.5 Up 07:50:27 - 08:20:27 4985
Beatty 08:05:18 -68.1 Dark Up 38.1 287.5 Up 07:50:18 - 08:20:18 4980
Patrick 08:05:04 -69.3 Dark Up 35.5 289.7 Up 07:50:04 - 08:20:04 4908
Laughlin/Bullhead City 08:05:07 -69.7 Dark Up 35.9 289.6 Up 07:50:07 - 08:20:07 4861
Lake Havasu City 08:05:03 -70.3 Dark Up 35.5 290.1 Up 07:50:03 - 08:20:03 4798
George/Scottsdale 08:04:52 -70.6 Dark Up 33.4 291.5 Up 07:49:52 - 08:19:52 4795
Idyllwild 08:05:12 -71.3 Dark Up 37.1 289.8 Up 07:50:12 - 08:20:12 4647
Wildwood 08:05:22 -70.9 Dark Up 38.7 288.9 Up 07:50:22 - 08:20:22 4632
Calipatria 08:05:07 -71.8 Dark Up 36.0 290.7 Up 07:50:07 - 08:20:07 4618
Yuma 08:05:04 -72.1 Dark Up 35.1 291.2 Up 07:50:04 - 08:20:04 4600

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 470443, (2023/02/08 08:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 19.28  98
3Iot Aur       04:56:59.6 +33:09:58  2.7  3.13  90
17 Aur         05:18:19.0 +33:46:02  6.1  1.46  86
PPM 070103     05:15:53.2 +34:25:21  8.0  0.99  86
PPM 070018     05:11:27.6 +34:06:15 10.0  0.05  87
470443         05:11:25.2 +34:03:33 14.9        87
Positions are for J2000

Event circumstances last updated at 2022/12/24 03:40:37 UT

Marc W. Buie, Southwest Research Institute

RECON