RECON: TNO occultation with 590218

Event between (590218) 11UD63 and star GA1160:02594076 with event index number of 2714648

Geocentric closest approach at 2029/02/28 04:36:26 UTC

J2000 position of star is 06:41:18.7 +26:12:44
Equinox of date position of star is 06:42:47.8 +26:11:17
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 13.1 AU from the Sun and 12.5 AU from the Earth.
Apparent velocity is 7.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 417 seconds.
The 1-sigma cross-track error in the shadow position is 1285 km.
The sky-plane scale is 9100.3 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=105.2 km assuming a 5% albedo -- 14.5 sec chord
Diameter=42.9 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 590218, (2029/02/28 04:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:06.1 +27:57:12  1.1 14.34  41
Alhena         06:39:23.8 +16:22:19  1.9  9.85  53
PPM 096264     06:39:14.5 +24:33:50  6.5  1.84  54
PPM 096294     06:40:24.6 +26:52:39  8.3  0.92  54
PPM 096347     06:42:04.3 +26:13:08  9.5  0.24  54
PPM 096359     06:42:25.4 +26:10:08 10.9  0.16  54
590218         06:43:07.2 +26:10:57 17.0        53
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 2.2 sigma about the mid-time.
The median site spacing is 30.1 km RECON observability=1.0 and success probability=39.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:33:45 -27.7 Dark Up 65.1 192.9 Up 04:18:45 - 04:48:45 1847
Sleaford 04:31:38 -34.5 Dark Up 60.1 217.8 Up 04:16:38 - 04:46:38 1772
Kelowna 04:33:40 -28.6 Dark Up 65.8 195.2 Up 04:18:40 - 04:48:40 1749
Peachland 04:33:44 -28.5 Dark Up 65.9 194.7 Up 04:18:44 - 04:48:44 1744
Summerland 04:33:43 -28.6 Dark Up 66.0 195.0 Up 04:18:43 - 04:48:43 1727
Penticton 04:33:41 -28.7 Dark Up 66.1 195.2 Up 04:18:41 - 04:48:41 1719
Victoria 04:34:20 -26.8 Dark Up 67.6 187.4 Up 04:19:20 - 04:49:20 1696
Oliver 04:33:44 -28.8 Dark Up 66.4 195.5 Up 04:18:44 - 04:48:44 1684
Anarchist Mountain Observatory 04:33:42 -29.0 Dark Up 66.6 196.0 Up 04:18:42 - 04:48:42 1663
Okanogan 04:33:46 -29.1 Dark Up 67.2 196.0 Up 04:18:46 - 04:48:46 1602
Brewster 04:33:49 -29.1 Dark Up 67.5 195.7 Up 04:18:49 - 04:48:49 1579
Manson/Chelan 04:33:52 -29.0 Dark Up 67.8 195.0 Up 04:18:52 - 04:48:52 1565
Wenatchee 04:33:56 -29.0 Dark Up 68.3 195.0 Up 04:18:56 - 04:48:56 1521
Ellensburg 04:33:59 -29.1 Dark Up 68.7 194.7 Up 04:18:59 - 04:48:59 1484
Yakima 04:34:00 -29.2 Dark Up 69.1 195.0 Up 04:19:00 - 04:49:00 1443
Toppenish/White Swan 04:33:59 -29.4 Dark Up 69.3 195.5 Up 04:18:59 - 04:48:59 1417
The Dalles 04:34:10 -29.2 Dark Up 70.2 194.2 Up 04:19:10 - 04:49:10 1355
PNWRO 04:33:46 -30.5 Dark Up 69.3 199.4 Up 04:18:46 - 04:48:46 1349
Maupin 04:34:10 -29.4 Dark Up 70.5 194.7 Up 04:19:10 - 04:49:10 1310
Sisters 04:34:19 -29.4 Dark Up 71.5 194.1 Up 04:19:19 - 04:49:19 1231
Bend 04:34:16 -29.6 Dark Up 71.7 195.0 Up 04:19:16 - 04:49:16 1201
Oregon Observatory 04:34:18 -29.6 Dark Up 71.9 194.8 Up 04:19:18 - 04:49:18 1187
Chiloquin 04:34:27 -29.8 Dark Up 73.2 194.8 Up 04:19:27 - 04:49:27 1061
Klamath Falls 04:34:27 -29.9 Dark Up 73.5 195.3 Up 04:19:27 - 04:49:27 1023
Cedarville 04:34:13 -31.3 Dark Up 73.8 200.8 Up 04:19:13 - 04:49:13 915
Fall River/Burney 04:34:28 -30.6 Dark Up 74.6 197.7 Up 04:19:28 - 04:49:28 893
Greenville 04:34:27 -31.2 Dark Up 75.3 200.3 Up 04:19:27 - 04:49:27 788
Gimple 04:34:25 -31.2 Dark Up 75.3 200.5 Up 04:19:25 - 04:49:25 786
Quincy 04:34:27 -31.2 Dark Up 75.5 200.5 Up 04:19:27 - 04:49:27 767
Portola 04:34:22 -31.6 Dark Up 75.5 202.3 Up 04:19:22 - 04:49:22 743
Reno 04:34:17 -32.1 Dark Up 75.5 204.8 Up 04:19:17 - 04:49:17 700
Carson City 04:34:17 -32.3 Dark Up 75.9 205.5 Up 04:19:17 - 04:49:17 662
Gardnerville 04:34:17 -32.4 Dark Up 76.1 206.1 Up 04:19:17 - 04:49:17 635
Yerington 04:34:11 -32.8 Dark Up 75.8 207.9 Up 04:19:11 - 04:49:11 627
Hawthorne 04:34:07 -33.3 Dark Up 76.0 210.5 Up 04:19:07 - 04:49:07 566
Lee Vining 04:34:14 -33.1 Dark Up 76.7 210.1 Up 04:19:14 - 04:49:14 517
Dunrhomin 04:31:41 -41.6 Dark Up 67.8 237.1 Up 04:16:41 - 04:46:41 514
Nikitin 04:31:41 -41.7 Dark Up 67.9 237.5 Up 04:16:41 - 04:46:41 495
CU-SBO 04:31:42 -41.7 Dark Up 68.0 237.5 Up 04:16:42 - 04:46:42 489
Bishop 04:34:08 -33.8 Dark Up 76.9 213.9 Up 04:19:08 - 04:49:08 438
Beatty 04:33:52 -35.2 Dark Up 76.5 220.3 Up 04:18:52 - 04:48:52 353
Patrick 04:33:24 -37.8 Dark Up 75.9 232.6 Up 04:18:24 - 04:48:24 133
Laughlin/Bullhead City 04:33:33 -37.4 Dark Up 76.5 231.6 Up 04:18:33 - 04:48:33 121
Wildwood 04:34:21 -34.7 Dark Up 79.6 223.1 Up 04:19:21 - 04:49:21 94
Lake Havasu City 04:33:32 -37.8 Dark Up 76.7 234.6 Up 04:18:32 - 04:48:32 44
Idyllwild 04:34:01 -36.2 Dark Up 78.7 230.8 Up 04:19:01 - 04:49:01 13
Calipatria 04:33:49 -37.3 Dark Up 78.3 236.7 Up 04:18:49 - 04:48:49 -79
George/Scottsdale 04:33:06 -39.9 Dark Up 75.5 242.7 Up 04:18:06 - 04:48:06 -89
Yuma 04:33:40 -38.1 Dark Up 77.9 240.7 Up 04:18:40 - 04:48:40 -144

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 590218, (2029/02/28 04:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 14.34  41
Alhena         06:37:42.8 +16:23:56  1.9  9.85  53
PPM 096264     06:37:27.2 +24:35:27  6.5  1.84  54
PPM 096294     06:38:35.5 +26:54:19  8.3  0.92  54
PPM 096347     06:40:15.7 +26:14:53  9.5  0.24  54
PPM 096359     06:40:36.9 +26:11:53 10.9  0.16  54
590218         06:41:18.7 +26:12:44 17.0        54
Positions are for J2000

Event circumstances last updated at 2023/12/10 04:36:44 UT

Marc W. Buie, Southwest Research Institute

RECON