RECON: TNO occultation with 11EZ90

Event between 11EZ90 and star GA1140:03410392 with event index number of 2117527

Geocentric closest approach at 2028/03/04 08:04:24 UTC

J2000 position of star is 12:51:53.6 +25:07:10
Equinox of date position of star is 12:52:59.3 +24:59:53
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 38.4 AU from the Sun and 37.6 AU from the Earth.
The TNO is moving 24.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 318 seconds.
The 1-sigma cross-track error in the shadow position is 5590 km.
The sky-plane scale is 27238.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 12.6 sec chord
Diameter=123.3 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 11EZ90, (2028/03/04 08:04UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:57.4 +19:02:26  0.0 20.26 122
Vindemiatrix   13:03:34.9 +10:48:30  2.8 14.37 114
31 Com         12:53:04.1 +27:23:16  4.9  2.42 102
PPM 102174     12:50:09.4 +24:41:11  7.0  0.76 103
PPM 102229     12:54:38.7 +24:59:29  9.0  0.31 104
11EZ90         12:53:16.3 +24:58:00 15.0       104
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 2.8 sigma about the mid-time.
The median site spacing is 23.5 km RECON observability=1.0 and success probability=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:06:08 -42.9 Dark Up 60.8 151.8 Up 07:51:08 - 08:21:08 7691
Kamloops 08:06:42 -45.5 Dark Up 56.1 128.0 Up 07:51:42 - 08:21:42 7140
Kelowna 08:06:39 -46.3 Dark Up 57.0 128.2 Up 07:51:39 - 08:21:39 7079
Peachland 08:06:39 -46.4 Dark Up 57.0 127.7 Up 07:51:39 - 08:21:39 7060
Summerland 08:06:40 -46.6 Dark Up 57.1 127.6 Up 07:51:40 - 08:21:40 7047
Penticton 08:06:39 -46.6 Dark Up 57.2 127.7 Up 07:51:39 - 08:21:39 7043
Oliver 08:06:38 -47.0 Dark Up 57.4 127.3 Up 07:51:38 - 08:21:38 7007
Anarchist Mountain Observatory 08:06:38 -47.2 Dark Up 57.6 127.3 Up 07:51:38 - 08:21:38 6995
Tonasket 08:06:37 -47.5 Dark Up 57.8 126.8 Up 07:51:37 - 08:21:37 6961
Okanogan 08:06:37 -47.8 Dark Up 57.9 126.2 Up 07:51:37 - 08:21:37 6923
Brewster 08:06:39 -48.1 Dark Up 57.9 125.6 Up 07:51:39 - 08:21:39 6890
Manson/Chelan 08:06:39 -48.3 Dark Up 57.9 124.8 Up 07:51:39 - 08:21:39 6859
Victoria 08:06:48 -47.5 Dark Up 55.7 121.4 Up 07:51:48 - 08:21:48 6845
Wenatchee 08:06:38 -48.8 Dark Up 58.0 123.9 Up 07:51:38 - 08:21:38 6806
Ellensburg 08:06:38 -49.2 Dark Up 58.1 123.1 Up 07:51:38 - 08:21:38 6757
Yakima 08:06:39 -49.6 Dark Up 58.3 122.5 Up 07:51:39 - 08:21:39 6715
PNWRO 08:06:33 -50.2 Dark Up 59.6 123.9 Up 07:51:33 - 08:21:33 6699
Toppenish/White Swan 08:06:37 -49.8 Dark Up 58.6 122.4 Up 07:51:37 - 08:21:37 6697
Goldendale 08:06:38 -50.3 Dark Up 58.6 121.1 Up 07:51:38 - 08:21:38 6628
Dunrhomin 08:05:45 -53.9 Dark Up 70.8 137.9 Up 07:50:45 - 08:20:45 6596
The Dalles 08:06:38 -50.5 Dark Up 58.5 120.3 Up 07:51:38 - 08:21:38 6595
CU-SBO 08:05:43 -54.1 Dark Up 71.0 137.1 Up 07:50:43 - 08:20:43 6568
Maupin 08:06:38 -51.0 Dark Up 58.8 119.9 Up 07:51:38 - 08:21:38 6554
Sisters 08:06:39 -51.8 Dark Up 58.9 118.0 Up 07:51:39 - 08:21:39 6450
Bend 08:06:37 -52.1 Dark Up 59.2 117.9 Up 07:51:37 - 08:21:37 6432
Oregon Observatory 08:06:39 -52.2 Dark Up 59.2 117.5 Up 07:51:39 - 08:21:39 6410
North Lake 08:06:36 -52.9 Dark Up 59.8 117.2 Up 07:51:36 - 08:21:36 6358
Lakeview 08:06:33 -54.0 Dark Up 60.6 116.2 Up 07:51:33 - 08:21:33 6263
Chiloquin 08:06:37 -53.5 Dark Up 59.5 115.0 Up 07:51:37 - 08:21:37 6261
Klamath Falls 08:06:37 -53.9 Dark Up 59.7 114.6 Up 07:51:37 - 08:21:37 6227
Cedarville 08:06:31 -54.6 Dark Up 61.0 115.4 Up 07:51:31 - 08:21:31 6200
Fall River/Burney 08:06:34 -55.1 Dark Up 60.4 113.1 Up 07:51:34 - 08:21:34 6114
Susanville 08:06:31 -55.7 Dark Up 61.1 113.0 Up 07:51:31 - 08:21:31 6070
Gimple 08:06:31 -56.0 Dark Up 61.1 112.3 Up 07:51:31 - 08:21:31 6034
Greenville 08:06:31 -56.0 Dark Up 61.0 112.2 Up 07:51:31 - 08:21:31 6032
Portola 08:06:30 -56.3 Dark Up 61.5 112.2 Up 07:51:30 - 08:21:30 6012
Quincy 08:06:31 -56.2 Dark Up 61.1 111.8 Up 07:51:31 - 08:21:31 6011
Reno 08:06:28 -56.6 Dark Up 62.1 112.5 Up 07:51:28 - 08:21:28 6003
Carson City 08:06:27 -57.0 Dark Up 62.2 111.9 Up 07:51:27 - 08:21:27 5967
Yerington 08:06:25 -57.2 Dark Up 62.7 112.3 Up 07:51:25 - 08:21:25 5966
Gardnerville 08:06:27 -57.2 Dark Up 62.3 111.5 Up 07:51:27 - 08:21:27 5943
Hawthorne 08:06:23 -57.7 Dark Up 63.3 112.0 Up 07:51:23 - 08:21:23 5934
Tonopah 08:06:17 -58.1 Dark Up 64.5 112.9 Up 07:51:17 - 08:21:17 5931
Lee Vining 08:06:23 -58.2 Dark Up 63.1 110.4 Up 07:51:23 - 08:21:23 5860
Indian Springs 08:06:11 -59.5 Dark Up 66.2 111.8 Up 07:51:11 - 08:21:11 5830
Beatty 08:06:14 -59.2 Dark Up 65.2 111.1 Up 07:51:14 - 08:21:14 5827
Bishop 08:06:20 -58.8 Dark Up 63.9 110.1 Up 07:51:20 - 08:21:20 5821
Henderson 08:06:07 -60.0 Dark Up 66.9 111.5 Up 07:51:07 - 08:21:07 5800
Patrick 08:06:03 -60.5 Dark Up 67.9 111.5 Up 07:51:03 - 08:21:03 5776
Kingman/Dolan Springs 08:06:03 -60.7 Dark Up 67.9 110.8 Up 07:51:03 - 08:21:03 5747
Laughlin/Bullhead City 08:06:04 -60.8 Dark Up 67.5 110.1 Up 07:51:04 - 08:21:04 5726
Mohave Valley 08:06:05 -61.1 Dark Up 67.6 109.5 Up 07:51:05 - 08:21:05 5698
George/Scottsdale 08:05:53 -61.8 Dark Up 70.0 110.0 Up 07:50:53 - 08:20:53 5681
Lake Havasu City 08:06:00 -61.4 Dark Up 67.9 108.8 Up 07:51:00 - 08:21:00 5667
Parker 08:06:02 -61.8 Dark Up 68.0 108.0 Up 07:51:02 - 08:21:02 5632
Idyllwild 08:06:09 -62.4 Dark Up 66.2 104.5 Up 07:51:09 - 08:21:09 5503
Calipatria 08:06:04 -62.9 Dark Up 67.3 104.3 Up 07:51:04 - 08:21:04 5483
Wildwood 08:06:15 -62.1 Dark Up 64.6 103.4 Up 07:51:15 - 08:21:15 5476
Yuma 08:06:00 -63.2 Dark Up 68.1 104.2 Up 07:51:00 - 08:21:00 5472

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 11EZ90, (2028/03/04 08:04UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.0 +19:10:14  0.0 20.26 122
Vindemiatrix   13:02:10.2 +10:57:33  2.8 14.37 114
31 Com         12:51:41.9 +27:32:26  4.9  2.42 102
PPM 102174     12:48:46.5 +24:50:22  7.0  0.76 103
PPM 102229     12:53:16.2 +25:08:38  9.0  0.31 104
11EZ90         12:51:53.6 +25:07:10 15.0       103
Positions are for J2000

Event circumstances last updated at 2022/05/22 23:15:11 UT

Marc W. Buie, Southwest Research Institute

RECON