RECON: TNO occultation with 590218

Event between (590218) 11UD63 and star GA1160:02617439 with event index number of 2686265

Geocentric closest approach at 2028/12/23 07:13:13 UTC

J2000 position of star is 06:55:22.1 +26:20:43
Equinox of date position of star is 06:56:44.4 +26:18:56
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 44% illuminated.
TNO apparent brightness V=19.9

[RECON map]
TNO is 13.2 AU from the Sun and 12.2 AU from the Earth.
The TNO is moving 21.2 km/sec on the sky relative to the star, or, 8.6 arcsec/hr.
The 1-sigma error in the time of the event is 300 seconds.
The 1-sigma cross-track error in the shadow position is 1893 km.
The sky-plane scale is 8841.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=105.2 km assuming a 5% albedo -- 5.0 sec chord
Diameter=42.9 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 590218, (2028/12/23 07:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:05.4 +27:57:14  1.1 11.22 117
Alhena         06:39:23.1 +16:22:19  1.9 10.76 104
39 Gem         07:00:34.5 +26:02:24  6.5  0.81 107
PPM 096719     06:56:17.0 +26:29:31  7.9  0.27 106
PPM 096736     06:56:53.4 +26:10:36  9.8  0.14 107
590218         06:57:09.8 +26:18:22 15.2       107
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 3.0 sigma about the mid-time.
The median site spacing is 32.7 km RECON observability=1.0 and success probability=28.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:13:49 -61.3 Dark Down 63.4 161.9 Up 06:58:49 - 07:28:49 369
Kamloops 07:14:35 -61.3 Dark Up 59.9 135.2 Up 06:59:35 - 07:29:35 313
Kelowna 07:14:33 -62.3 Dark Up 60.9 135.6 Up 06:59:33 - 07:29:33 223
Peachland 07:14:35 -62.3 Dark Up 60.8 135.0 Up 06:59:35 - 07:29:35 215
Summerland 07:14:34 -62.5 Dark Up 61.0 135.0 Up 06:59:34 - 07:29:34 199
Penticton 07:14:34 -62.6 Dark Up 61.1 135.1 Up 06:59:34 - 07:29:34 191
Oliver 07:14:35 -62.9 Dark Up 61.3 134.6 Up 06:59:35 - 07:29:35 156
Anarchist Mountain Observatory 07:14:34 -63.1 Dark Up 61.5 134.7 Up 06:59:34 - 07:29:34 137
Victoria 07:14:48 -62.4 Dark Up 59.9 127.9 Up 06:59:48 - 07:29:48 130
Tonasket 07:14:35 -63.4 Dark Up 61.7 134.2 Up 06:59:35 - 07:29:35 106
Okanogan 07:14:36 -63.6 Dark Up 61.9 133.5 Up 06:59:36 - 07:29:36 73
Brewster 07:14:37 -63.8 Dark Up 62.0 132.8 Up 06:59:37 - 07:29:37 48
Manson/Chelan 07:14:38 -63.9 Dark Up 61.9 131.9 Up 06:59:38 - 07:29:38 30
Wenatchee 07:14:39 -64.3 Dark Up 62.2 131.0 Up 06:59:39 - 07:29:39 -16
Ellensburg 07:14:41 -64.6 Dark Up 62.3 130.1 Up 06:59:41 - 07:29:41 -56
Yakima 07:14:41 -65.0 Dark Up 62.6 129.4 Up 06:59:41 - 07:29:41 -98
Toppenish/White Swan 07:14:41 -65.2 Dark Up 62.8 129.4 Up 06:59:41 - 07:29:41 -122
Goldendale 07:14:43 -65.6 Dark Up 62.9 127.9 Up 06:59:43 - 07:29:43 -174
PNWRO 07:14:36 -66.0 Dark Up 63.8 131.2 Up 06:59:36 - 07:29:36 -175
The Dalles 07:14:45 -65.7 Dark Up 62.9 127.0 Up 06:59:45 - 07:29:45 -193
Maupin 07:14:45 -66.1 Dark Up 63.2 126.5 Up 06:59:45 - 07:29:45 -238
Sisters 07:14:48 -66.7 Dark Up 63.4 124.3 Up 06:59:48 - 07:29:48 -323
Bend 07:14:47 -67.0 Dark Up 63.7 124.3 Up 06:59:47 - 07:29:47 -351
Oregon Observatory 07:14:48 -67.1 Dark Up 63.7 123.8 Up 06:59:48 - 07:29:48 -367
North Lake 07:14:47 -67.8 Dark Up 64.4 123.6 Up 06:59:47 - 07:29:47 -440
Chiloquin 07:14:51 -68.0 Dark Up 64.2 121.0 Up 06:59:51 - 07:29:51 -500
Klamath Falls 07:14:51 -68.4 Dark Up 64.4 120.5 Up 06:59:51 - 07:29:51 -537
Lakeview 07:14:46 -69.0 Dark Up 65.3 122.5 Up 06:59:46 - 07:29:46 -558
Cedarville 07:14:46 -69.6 Dark Up 65.8 121.6 Up 06:59:46 - 07:29:46 -629
Fall River/Burney 07:14:51 -69.5 Dark Up 65.2 118.9 Up 06:59:51 - 07:29:51 -666
Susanville 07:14:49 -70.3 Dark Up 66.0 118.7 Up 06:59:49 - 07:29:49 -742
Greenville 07:14:50 -70.4 Dark Up 66.0 117.7 Up 06:59:50 - 07:29:50 -767
Gimple 07:14:50 -70.5 Dark Up 66.0 117.9 Up 06:59:50 - 07:29:50 -769
Quincy 07:14:51 -70.6 Dark Up 66.1 117.3 Up 06:59:51 - 07:29:51 -789
Portola 07:14:49 -70.9 Dark Up 66.4 117.8 Up 06:59:49 - 07:29:49 -808
Reno 07:14:47 -71.4 Dark Up 67.0 118.2 Up 06:59:47 - 07:29:47 -844
Dunrhomin 07:13:51 -72.9 Dark Down 74.5 151.4 Up 06:58:51 - 07:28:51 -867
Carson City 07:14:47 -71.7 Dark Up 67.2 117.5 Up 06:59:47 - 07:29:47 -883
CU-SBO 07:13:51 -73.2 Dark Down 74.7 150.7 Up 06:58:51 - 07:28:51 -893
Gardnerville 07:14:47 -71.9 Dark Up 67.3 117.0 Up 06:59:47 - 07:29:47 -909
Yerington 07:14:45 -72.1 Dark Up 67.7 118.0 Up 06:59:45 - 07:29:45 -911
Hawthorne 07:14:44 -72.8 Dark Up 68.3 117.8 Up 06:59:44 - 07:29:44 -966
Lee Vining 07:14:46 -73.0 Dark Up 68.2 115.8 Up 06:59:46 - 07:29:46 -1021
Tonopah 07:14:39 -73.7 Dark Up 69.5 118.9 Up 06:59:39 - 07:29:39 -1031
Bishop 07:14:44 -73.8 Dark Up 69.0 115.5 Up 06:59:44 - 07:29:44 -1094
Beatty 07:14:38 -74.9 Dark Up 70.3 116.8 Up 06:59:38 - 07:29:38 -1161
Indian Springs 07:14:34 -75.6 Dark Up 71.2 117.8 Up 06:59:34 - 07:29:34 -1206
Henderson 07:14:31 -76.3 Dark Down 72.0 117.5 Up 06:59:31 - 07:29:31 -1271
Patrick 07:14:27 -77.2 Dark Down 73.1 117.7 Up 06:59:27 - 07:29:27 -1348
Laughlin/Bullhead City 07:14:31 -77.2 Dark Down 72.7 115.8 Up 06:59:31 - 07:29:31 -1369
Kingman/Dolan Springs 07:14:28 -77.4 Dark Down 73.0 116.7 Up 06:59:28 - 07:29:28 -1371
Mohave Valley 07:14:31 -77.5 Dark Down 72.8 115.0 Up 06:59:31 - 07:29:31 -1399
Lake Havasu City 07:14:30 -77.9 Dark Down 73.1 114.2 Up 06:59:30 - 07:29:30 -1445
Wildwood 07:14:47 -76.4 Dark Up 70.0 107.0 Up 06:59:47 - 07:29:47 -1446
Parker 07:14:30 -78.3 Dark Down 73.3 113.2 Up 06:59:30 - 07:29:30 -1484
Idyllwild 07:14:40 -77.6 Dark Up 71.6 108.5 Up 06:59:40 - 07:29:40 -1505
George/Scottsdale 07:14:20 -79.4 Dark Down 75.3 116.1 Up 06:59:20 - 07:29:20 -1549
Calipatria 07:14:36 -78.7 Dark Up 72.7 108.3 Up 06:59:36 - 07:29:36 -1584
Yuma 07:14:32 -79.4 Dark Down 73.5 108.1 Up 06:59:32 - 07:29:32 -1639

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, (2028/12/23 07:13UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 11.22 117
Alhena         06:37:42.8 +16:23:56  1.9 10.76 104
39 Gem         06:58:47.1 +26:04:53  6.5  0.81 107
PPM 096719     06:54:29.1 +26:31:50  7.9  0.27 106
PPM 096736     06:55:05.8 +26:12:56  9.8  0.14 107
590218         06:55:22.1 +26:20:43 15.2       107
Positions are for J2000

Event circumstances last updated at 2022/02/22 01:41:15 UT

Marc W. Buie, Southwest Research Institute

RECON