RECON: TNO occultation with 612719

Event between (612719) 03WU188 and star GA1120:03094377 with event index number of 2816342

Geocentric closest approach at 2023/12/14 10:24:41 UTC

J2000 position of star is 08:01:14.9 +22:39:28
Equinox of date position of star is 08:02:37.3 +22:35:33
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 163 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 43.7 AU from the Sun and 42.9 AU from the Earth.
Apparent velocity is 20.1 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 221 seconds.
The 1-sigma cross-track error in the shadow position is 1713 km.
The sky-plane scale is 31143.8 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=320.6 km assuming a 5% albedo -- 15.9 sec chord
Diameter=130.9 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 612719, (2023/12/14 10:22UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:46.8 +27:57:59  1.1  6.46 168
10Mu 2Cnc      08:09:10.2 +21:30:38  5.3  1.85 161
PPM 098201     08:01:08.0 +23:06:57  7.9  0.63 164
PPM 098209     08:01:41.9 +23:00:43  9.7  0.48 163
PPM 098228     08:02:42.0 +22:26:12 10.6  0.15 163
612719         08:02:40.1 +22:35:25 16.1       163
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 4.1 sigma about the mid-time.
The median site spacing is 30.1 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:24:37 -41.4 Dark Down 59.0 203.3 Up 10:09:37 - 10:39:37 8936
Kamloops 10:25:21 -50.2 Dark Down 62.0 177.1 Up 10:10:21 - 10:40:21 8530
Kelowna 10:25:18 -50.0 Dark Down 62.8 178.8 Up 10:10:18 - 10:40:18 8466
Peachland 10:25:19 -50.3 Dark Down 62.9 178.2 Up 10:10:19 - 10:40:19 8451
Summerland 10:25:20 -50.3 Dark Down 63.1 178.3 Up 10:10:20 - 10:40:20 8438
Penticton 10:25:18 -50.3 Dark Down 63.1 178.6 Up 10:10:18 - 10:40:18 8433
Oliver 10:25:18 -50.4 Dark Down 63.5 178.5 Up 10:10:18 - 10:40:18 8399
Anarchist Mountain Observatory 10:25:16 -50.4 Dark Down 63.6 178.9 Up 10:10:16 - 10:40:16 8386
Okanogan 10:25:18 -50.8 Dark Down 64.3 178.4 Up 10:10:18 - 10:40:18 8319
Brewster 10:25:18 -51.0 Dark Down 64.6 178.0 Up 10:10:18 - 10:40:18 8289
Victoria 10:25:31 -52.9 Dark Down 63.9 170.5 Up 10:10:31 - 10:40:31 8271
Manson/Chelan 10:25:19 -51.3 Dark Down 64.8 177.2 Up 10:10:19 - 10:40:19 8263
Wenatchee 10:25:20 -51.7 Dark Down 65.2 176.8 Up 10:10:20 - 10:40:20 8213
Ellensburg 10:25:19 -52.0 Dark Down 65.6 176.2 Up 10:10:19 - 10:40:19 8168
Yakima 10:25:20 -52.2 Dark Down 66.0 176.1 Up 10:10:20 - 10:40:20 8128
Toppenish/White Swan 10:25:17 -52.1 Dark Down 66.3 176.5 Up 10:10:17 - 10:40:17 8109
PNWRO 10:25:11 -51.4 Dark Down 66.7 179.8 Up 10:10:11 - 10:40:11 8100
The Dalles 10:25:19 -53.0 Dark Down 67.0 174.5 Up 10:10:19 - 10:40:19 8018
Maupin 10:25:19 -53.1 Dark Down 67.4 174.6 Up 10:10:19 - 10:40:19 7978
Sisters 10:25:20 -53.7 Dark Down 68.2 173.2 Up 10:10:20 - 10:40:20 7880
Bend 10:25:19 -53.7 Dark Down 68.5 173.8 Up 10:10:19 - 10:40:19 7861
Dunrhomin 10:24:10 -43.2 Dark Down 69.1 216.8 Up 10:09:10 - 10:39:10 7846
Oregon Observatory 10:25:18 -53.8 Dark Down 68.7 173.4 Up 10:10:18 - 10:40:18 7841
Nikitin 10:24:08 -43.2 Dark Down 69.2 217.0 Up 10:09:08 - 10:39:08 7828
CU-SBO 10:24:11 -43.2 Dark Down 69.3 217.0 Up 10:09:11 - 10:39:11 7819
Chiloquin 10:25:18 -54.6 Dark Down 69.9 171.9 Up 10:10:18 - 10:40:18 7699
Klamath Falls 10:25:18 -54.7 Dark Down 70.3 172.0 Up 10:10:18 - 10:40:18 7666
Cedarville 10:25:11 -53.8 Dark Down 71.1 176.1 Up 10:10:11 - 10:40:11 7625
Fall River/Burney 10:25:15 -54.8 Dark Down 71.5 172.5 Up 10:10:15 - 10:40:15 7552
Gimple 10:25:12 -54.7 Dark Down 72.4 173.8 Up 10:10:12 - 10:40:12 7468
Greenville 10:25:13 -54.8 Dark Down 72.4 173.5 Up 10:10:13 - 10:40:13 7466
Quincy 10:25:14 -54.9 Dark Down 72.6 173.5 Up 10:10:14 - 10:40:14 7446
Portola 10:25:10 -54.5 Dark Down 72.8 174.8 Up 10:10:10 - 10:40:10 7442
Reno 10:25:08 -54.1 Dark Down 73.1 176.8 Up 10:10:08 - 10:40:08 7427
Carson City 10:25:06 -54.2 Dark Down 73.5 176.8 Up 10:10:06 - 10:40:06 7391
Yerington 10:25:06 -53.8 Dark Down 73.7 178.8 Up 10:10:06 - 10:40:06 7383
Gardnerville 10:25:06 -54.3 Dark Down 73.7 176.9 Up 10:10:06 - 10:40:06 7366
Hawthorne 10:25:02 -53.5 Dark Down 74.1 180.5 Up 10:10:02 - 10:40:02 7346
Lee Vining 10:25:02 -54.0 Dark Down 74.7 178.8 Up 10:10:02 - 10:40:02 7277
Bishop 10:24:59 -53.6 Dark Down 75.3 181.4 Up 10:09:59 - 10:39:59 7230
Beatty 10:24:51 -52.4 Dark Down 75.7 187.4 Up 10:09:51 - 10:39:51 7218
Patrick 10:24:37 -50.4 Dark Down 76.6 199.5 Up 10:09:37 - 10:39:37 7131
Laughlin/Bullhead City 10:24:40 -51.0 Dark Down 77.0 197.1 Up 10:09:40 - 10:39:40 7089
Lake Havasu City 10:24:37 -50.8 Dark Down 77.6 199.0 Up 10:09:37 - 10:39:37 7025
George/Scottsdale 10:24:26 -48.9 Dark Down 77.4 210.1 Up 10:09:26 - 10:39:26 7006
Idyllwild 10:24:46 -52.8 Dark Down 78.8 189.6 Up 10:09:46 - 10:39:46 6888
Wildwood 10:24:56 -54.3 Dark Down 78.6 180.7 Up 10:09:56 - 10:39:56 6883
Calipatria 10:24:41 -51.9 Dark Down 79.2 195.8 Up 10:09:41 - 10:39:41 6852
Yuma 10:24:36 -51.2 Dark Down 79.3 200.6 Up 10:09:36 - 10:39:36 6829

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 612719, (2023/12/14 10:22UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  6.46 168
10Mu 2Cnc      08:07:45.9 +21:34:53  5.3  1.85 161
PPM 098201     07:59:42.6 +23:10:58  7.9  0.63 164
PPM 098209     08:00:16.5 +23:04:44  9.7  0.48 163
PPM 098228     08:01:17.0 +22:30:16 10.6  0.15 163
612719         08:01:14.9 +22:39:28 16.1       163
Positions are for J2000

Event circumstances last updated at 2023/03/04 03:46:46 UT

Marc W. Buie, Southwest Research Institute

RECON