RECON: TNO occultation with 590218

Event between (590218) 11UD63 and star GA1160:02682285 with event index number of 2686251

Geocentric closest approach at 2028/11/13 10:04:01 UTC

J2000 position of star is 07:03:16.1 +26:13:38
Equinox of date position of star is 07:04:44.9 +26:11:26
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 14% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 13.2 AU from the Sun and 12.6 AU from the Earth.
Apparent velocity is 9.8 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 367 seconds.
The 1-sigma cross-track error in the shadow position is 1125 km.
The sky-plane scale is 9132.7 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=105.2 km assuming a 5% albedo -- 11.0 sec chord
Diameter=42.9 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 590218, (2028/11/13 10:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.0 +27:57:15  1.1  9.52  76
39 Gem         07:00:34.1 +26:02:25  6.5  1.02  86
PPM 096908     07:03:23.3 +26:31:48  8.4  0.51  85
PPM 096933     07:04:10.0 +25:48:08  8.6  0.43  85
PPM 096986     07:06:06.0 +26:07:14 10.9  0.24  84
590218         07:05:03.1 +26:10:58 16.3        84
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 2.5 sigma about the mid-time.
The median site spacing is 36.4 km RECON observability=1.0 and success probability=2.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:05:25 -38.8 Dark Down 63.6 165.1 Up 09:50:25 - 10:20:25 5057
Kamloops 10:07:05 -47.1 Dark Down 60.6 138.3 Up 09:52:05 - 10:22:05 4925
Kelowna 10:07:01 -47.1 Dark Down 61.6 138.7 Up 09:52:01 - 10:22:01 4838
Peachland 10:07:03 -47.3 Dark Down 61.6 138.1 Up 09:52:03 - 10:22:03 4828
Summerland 10:07:02 -47.3 Dark Down 61.7 138.1 Up 09:52:02 - 10:22:02 4813
Penticton 10:07:03 -47.3 Dark Down 61.8 138.2 Up 09:52:03 - 10:22:03 4805
Oliver 10:07:02 -47.5 Dark Down 62.1 137.7 Up 09:52:02 - 10:22:02 4769
Anarchist Mountain Observatory 10:07:01 -47.5 Dark Down 62.3 137.8 Up 09:52:01 - 10:22:01 4751
Victoria 10:07:31 -49.9 Dark Down 60.8 130.9 Up 09:52:31 - 10:22:31 4722
Okanogan 10:07:04 -48.0 Dark Down 62.7 136.6 Up 09:52:04 - 10:22:04 4685
Brewster 10:07:06 -48.2 Dark Down 62.8 135.9 Up 09:52:06 - 10:22:06 4658
Manson/Chelan 10:07:08 -48.6 Dark Down 62.7 135.1 Up 09:52:08 - 10:22:08 4638
Wenatchee 10:07:11 -48.9 Dark Down 63.0 134.1 Up 09:52:11 - 10:22:11 4590
Ellensburg 10:07:14 -49.3 Dark Down 63.2 133.2 Up 09:52:14 - 10:22:14 4548
Yakima 10:07:15 -49.5 Dark Down 63.4 132.6 Up 09:52:15 - 10:22:15 4506
Toppenish/White Swan 10:07:14 -49.5 Dark Down 63.7 132.5 Up 09:52:14 - 10:22:14 4482
PNWRO 10:07:03 -48.8 Dark Down 64.7 134.5 Up 09:52:03 - 10:22:03 4437
The Dalles 10:07:21 -50.4 Dark Down 63.8 130.1 Up 09:52:21 - 10:22:21 4405
Maupin 10:07:21 -50.5 Dark Down 64.1 129.6 Up 09:52:21 - 10:22:21 4361
Sisters 10:07:27 -51.3 Dark Down 64.4 127.4 Up 09:52:27 - 10:22:27 4271
Bend 10:07:25 -51.2 Dark Down 64.7 127.4 Up 09:52:25 - 10:22:25 4244
Oregon Observatory 10:07:26 -51.4 Dark Down 64.7 126.9 Up 09:52:26 - 10:22:26 4227
Chiloquin 10:07:31 -52.3 Dark Down 65.3 124.0 Up 09:52:31 - 10:22:31 4089
Klamath Falls 10:07:32 -52.4 Dark Down 65.5 123.5 Up 09:52:32 - 10:22:32 4052
Cedarville 10:07:20 -51.7 Dark Down 66.9 124.7 Up 09:52:20 - 10:22:20 3969
Fall River/Burney 10:07:31 -52.7 Dark Down 66.4 121.9 Up 09:52:31 - 10:22:31 3924
Greenville 10:07:28 -52.9 Dark Down 67.1 120.8 Up 09:52:28 - 10:22:28 3824
Dunrhomin 10:05:19 -41.8 Dark Down 74.9 156.6 Up 09:50:19 - 10:20:19 3823
Gimple 10:07:28 -52.8 Dark Down 67.2 120.9 Up 09:52:28 - 10:22:28 3823
Nikitin 10:05:19 -41.9 Dark Down 75.1 156.3 Up 09:50:19 - 10:20:19 3803
Quincy 10:07:29 -52.9 Dark Down 67.2 120.4 Up 09:52:29 - 10:22:29 3802
CU-SBO 10:05:20 -41.9 Dark Down 75.1 155.9 Up 09:50:20 - 10:20:20 3796
Portola 10:07:25 -52.7 Dark Down 67.6 120.8 Up 09:52:25 - 10:22:25 3786
Reno 10:07:20 -52.3 Dark Down 68.2 121.3 Up 09:52:20 - 10:22:20 3753
Carson City 10:07:20 -52.5 Dark Down 68.4 120.6 Up 09:52:20 - 10:22:20 3715
Yerington 10:07:16 -52.1 Dark Down 68.9 121.2 Up 09:52:16 - 10:22:16 3690
Gardnerville 10:07:20 -52.5 Dark Down 68.5 120.1 Up 09:52:20 - 10:22:20 3688
Hawthorne 10:07:12 -51.9 Dark Down 69.5 121.0 Up 09:52:12 - 10:22:12 3638
Lee Vining 10:07:18 -52.5 Dark Down 69.4 118.9 Up 09:52:18 - 10:22:18 3579
Bishop 10:07:12 -52.2 Dark Down 70.2 118.6 Up 09:52:12 - 10:22:12 3510
Beatty 10:06:58 -51.1 Dark Down 71.5 120.2 Up 09:51:58 - 10:21:58 3453
Patrick 10:06:34 -49.4 Dark Down 74.2 121.5 Up 09:51:34 - 10:21:34 3284
Laughlin/Bullhead City 10:06:40 -50.0 Dark Down 73.9 119.3 Up 09:51:40 - 10:21:40 3258
Lake Havasu City 10:06:38 -49.9 Dark Down 74.4 117.7 Up 09:51:38 - 10:21:38 3183
Wildwood 10:07:17 -53.3 Dark Down 71.4 109.8 Up 09:52:17 - 10:22:17 3153
Idyllwild 10:07:01 -52.0 Dark Down 72.9 111.4 Up 09:52:01 - 10:22:01 3106
George/Scottsdale 10:06:17 -48.2 Dark Down 76.5 120.1 Up 09:51:17 - 10:21:17 3096
Calipatria 10:06:50 -51.2 Dark Down 74.1 111.3 Up 09:51:50 - 10:21:50 3035
Yuma 10:06:42 -50.5 Dark Down 74.9 111.2 Up 09:51:42 - 10:21:42 2986

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, (2028/11/13 10:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  9.52  76
39 Gem         06:58:47.1 +26:04:53  6.5  1.02  86
PPM 096908     07:01:36.0 +26:34:24  8.4  0.51  85
PPM 096933     07:02:23.3 +25:50:45  8.6  0.43  85
PPM 096986     07:04:19.0 +26:09:57 10.9  0.24  84
590218         07:03:16.1 +26:13:38 16.3        85
Positions are for J2000

Event circumstances last updated at 2023/12/09 04:28:34 UT

Marc W. Buie, Southwest Research Institute

RECON