RECON: TNO occultation with 11UU411

Event between 11UU411 and star GA1060:00282244 with event index number of 2137629

Geocentric closest approach at 2023/02/24 02:03:55 UTC

J2000 position of star is 02:51:11.0 +17:45:26
Equinox of date position of star is 02:52:28.5 +17:51:04
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 19 degrees from the moon. Moon is 19% illuminated.
Apparent brightness V=24.4

[RECON map]
Object is 43.0 AU from the Sun and 43.4 AU from the Earth.
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 482 seconds.
The 1-sigma cross-track error in the shadow position is 5137 km.
The sky-plane scale is 31448.1 km/arcsec.

The object has an absolute magnitude Hv=7.9
Diameter=157.0 km assuming a 5% albedo -- 11.1 sec chord
Diameter=64.1 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11UU411, (2023/02/24 02:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:15.1 +16:33:14  0.8 25.03  44
Hamal          02:08:29.0 +23:34:15  2.0 11.76  16
42Pi Ari       02:50:35.3 +17:33:34  5.1  0.54  19
40 Ari         02:49:50.3 +18:22:44  7.3  0.82  19
PPM 118589     02:51:13.5 +17:40:21  9.7  0.35  19
PPM 118605     02:52:41.9 +17:41:34 11.3  0.17  19
11UU411        02:52:29.0 +17:51:06 16.7        20
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 1.9 sigma about the mid-time.
The median site spacing is 19.4 km RECON observability=0.1 and success probability=4.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 02:07:42 -15.4 AT Up 45.1 234.1 Up 01:52:42 - 02:22:42 -5916
Kamloops 02:06:40 -6.2 NT Up 52.6 216.4 Up 01:51:40 - 02:21:40 -5975
Kelowna 02:06:44 -6.6 NT Up 52.9 218.3 Up 01:51:44 - 02:21:44 -6062
Peachland 02:06:42 -6.4 NT Up 53.1 218.0 Up 01:51:42 - 02:21:42 -6071
Summerland 02:06:42 -6.5 NT Up 53.2 218.2 Up 01:51:42 - 02:21:42 -6086
Penticton 02:06:44 -6.5 NT Up 53.2 218.5 Up 01:51:44 - 02:21:44 -6093
Oliver 02:06:43 -6.5 NT Up 53.5 218.8 Up 01:51:43 - 02:21:43 -6128
Anarchist Mountain Observatory 02:06:44 -6.6 NT Up 53.5 219.2 Up 01:51:44 - 02:21:44 -6146
Victoria 02:06:24 -3.8 CT Up 55.5 213.4 Up 01:51:24 - 02:21:24 -6155
Okanogan 02:06:44 -6.4 NT Up 54.1 219.4 Up 01:51:44 - 02:21:44 -6208
Brewster 02:06:43 -6.2 NT Up 54.4 219.4 Up 01:51:43 - 02:21:43 -6233
Manson/Chelan 02:06:40 -5.9 CT Up 54.8 219.0 Up 01:51:40 - 02:21:40 -6251
Wenatchee 02:06:41 -5.7 CT Up 55.2 219.2 Up 01:51:41 - 02:21:41 -6296
Ellensburg 02:06:38 -5.5 CT Up 55.6 219.2 Up 01:51:38 - 02:21:38 -6335
Yakima 02:06:40 -5.5 CT Up 55.9 219.6 Up 01:51:40 - 02:21:40 -6376
Toppenish/White Swan 02:06:41 -5.5 CT Up 56.0 220.0 Up 01:51:41 - 02:21:41 -6399
PNWRO 02:06:48 -6.6 NT Up 55.6 222.7 Up 01:51:48 - 02:21:48 -6450
The Dalles 02:06:36 -4.9 CT Up 57.0 219.6 Up 01:51:36 - 02:21:36 -6469
Maupin 02:06:37 -4.9 CT Up 57.2 220.1 Up 01:51:37 - 02:21:37 -6513
Sisters 02:06:34 -4.4 CT Up 58.2 220.2 Up 01:51:34 - 02:21:34 -6597
Bend 02:06:35 -4.5 CT Up 58.2 220.9 Up 01:51:35 - 02:21:35 -6624
Oregon Observatory 02:06:36 -4.4 CT Up 58.4 220.9 Up 01:51:36 - 02:21:36 -6640
Chiloquin 02:06:33 -3.9 CT Up 59.6 221.7 Up 01:51:33 - 02:21:33 -6770
Klamath Falls 02:06:33 -3.9 CT Up 59.8 222.2 Up 01:51:33 - 02:21:33 -6806
Cedarville 02:06:43 -5.0 CT Up 59.5 225.6 Up 01:51:43 - 02:21:43 -6896
Fall River/Burney 02:06:35 -4.0 CT Up 60.5 224.2 Up 01:51:35 - 02:21:35 -6933
Greenville 02:06:38 -4.2 CT Up 60.9 226.1 Up 01:51:38 - 02:21:38 -7032
Gimple 02:06:38 -4.3 CT Up 60.8 226.2 Up 01:51:38 - 02:21:38 -7034
Quincy 02:06:37 -4.2 CT Up 61.0 226.4 Up 01:51:37 - 02:21:37 -7054
Portola 02:06:41 -4.5 CT Up 60.8 227.3 Up 01:51:41 - 02:21:41 -7072
Reno 02:06:44 -5.0 CT Up 60.6 228.7 Up 01:51:44 - 02:21:44 -7107
Dunrhomin 02:08:04 -16.5 AT Up 50.5 246.5 Up 01:53:04 - 02:23:04 -7123
Nikitin 02:08:04 -16.5 AT Up 50.6 246.7 Up 01:53:04 - 02:23:04 -7143
Carson City 02:06:45 -5.0 CT Up 60.8 229.2 Up 01:51:45 - 02:21:45 -7145
CU-SBO 02:08:04 -16.4 AT Up 50.7 246.7 Up 01:53:04 - 02:23:04 -7149
Gardnerville 02:06:45 -5.0 CT Up 61.0 229.6 Up 01:51:45 - 02:21:45 -7171
Yerington 02:06:47 -5.4 CT Up 60.6 230.5 Up 01:51:47 - 02:21:47 -7172
Hawthorne 02:06:52 -5.8 CT Up 60.5 231.9 Up 01:51:52 - 02:21:52 -7227
Lee Vining 02:06:49 -5.3 CT Up 61.2 232.0 Up 01:51:49 - 02:21:49 -7281
Bishop 02:06:53 -5.8 CT Up 61.1 233.9 Up 01:51:53 - 02:21:53 -7352
Beatty 02:07:02 -7.1 NT Up 60.2 237.0 Up 01:52:02 - 02:22:02 -7418
Patrick 02:07:20 -9.3 NT Up 58.9 243.0 Up 01:52:20 - 02:22:20 -7602
Laughlin/Bullhead City 02:07:16 -8.7 NT Up 59.6 242.5 Up 01:52:16 - 02:22:16 -7623
Lake Havasu City 02:07:18 -8.9 NT Up 59.7 243.8 Up 01:52:18 - 02:22:18 -7697
Wildwood 02:06:51 -5.2 CT Up 63.0 238.8 Up 01:51:51 - 02:21:51 -7701
Idyllwild 02:07:03 -6.8 NT Up 61.8 242.0 Up 01:52:03 - 02:22:03 -7758
George/Scottsdale 02:07:32 -10.9 NT Up 58.1 247.8 Up 01:52:32 - 02:22:32 -7799
Calipatria 02:07:10 -7.7 NT Up 61.2 244.5 Up 01:52:10 - 02:22:10 -7836
Yuma 02:07:15 -8.4 NT Up 60.7 246.3 Up 01:52:15 - 02:22:15 -7890

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 11UU411, (2023/02/24 02:04UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 25.03  44
Hamal          02:07:10.7 +23:27:41  2.0 11.76  16
42Pi Ari       02:49:17.5 +17:27:52  5.1  0.54  19
40 Ari         02:48:32.2 +18:17:00  7.3  0.82  19
PPM 118589     02:49:55.6 +17:34:39  9.7  0.35  19
PPM 118605     02:51:24.0 +17:35:55 11.3  0.17  19
11UU411        02:51:11.0 +17:45:26 16.7        19
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:30:43 UT

Marc W. Buie, Southwest Research Institute

RECON