RECON: TNO occultation with 11UQ62

Event between 11UQ62 and star GA1040:02233180 with event index number of 2135258

Geocentric closest approach at 2023/12/03 07:42:36 UTC

J2000 position of star is 06:42:43.9 +15:25:50
Equinox of date position of star is 06:43:59.8 +15:24:27
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 41 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 18.4 AU from the Sun and 17.6 AU from the Earth.
The TNO is moving 18.9 km/sec on the sky relative to the star, or, 5.4 arcsec/hr.
The 1-sigma error in the time of the event is 60 seconds.
The 1-sigma cross-track error in the shadow position is 710 km.
The sky-plane scale is 12734.1 km/arcsec.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.1 km assuming a 5% albedo -- 3.8 sec chord
Diameter=29.4 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 11UQ62, (2023/12/03 07:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.1 +07:24:34  0.4 14.14  55
Alhena         06:39:05.6 +16:22:37  1.9  1.55  42
PPM 122879     06:42:44.7 +16:22:23  5.9  1.02  42
PPM 122881     06:42:45.1 +15:24:11  8.3  0.33  42
PPM 122940     06:45:02.2 +15:34:09  9.9  0.28  41
PPM 122948     06:45:11.4 +15:27:17 10.8  0.27  41
11UQ62         06:44:06.1 +15:24:20 15.9        41
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 5.0 sigma about the mid-time.
The median site spacing is 24.6 km RECON observability=1.0 and success probability=22.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:44:06 -61.4 Dark Up 45.8 130.9 Up 07:38:35 - 07:49:37 2486
Kelowna 07:44:06 -62.2 Dark Up 46.8 131.3 Up 07:38:35 - 07:49:37 2404
Peachland 07:44:08 -62.3 Dark Up 46.7 130.9 Up 07:38:37 - 07:49:39 2400
Summerland 07:44:07 -62.5 Dark Up 46.9 130.9 Up 07:38:36 - 07:49:38 2386
Penticton 07:44:08 -62.5 Dark Up 47.0 130.9 Up 07:38:37 - 07:49:39 2379
Sleaford 07:43:16 -58.5 Dark Up 50.4 150.7 Up 07:37:45 - 07:48:47 2368
Victoria 07:44:22 -63.3 Dark Up 45.7 125.6 Up 07:38:51 - 07:49:53 2368
Oliver 07:44:08 -62.9 Dark Up 47.2 130.7 Up 07:38:37 - 07:49:39 2350
Anarchist Mountain Observatory 07:44:08 -63.1 Dark Up 47.4 130.7 Up 07:38:37 - 07:49:39 2332
Tonasket 07:44:10 -63.4 Dark Up 47.6 130.4 Up 07:38:39 - 07:49:41 2308
Okanogan 07:44:11 -63.7 Dark Up 47.7 130.0 Up 07:38:40 - 07:49:42 2283
Brewster 07:44:12 -64.0 Dark Up 47.8 129.5 Up 07:38:41 - 07:49:43 2264
Manson/Chelan 07:44:14 -64.2 Dark Up 47.7 128.9 Up 07:38:43 - 07:49:45 2253
Wenatchee 07:44:16 -64.6 Dark Up 48.0 128.3 Up 07:38:45 - 07:49:47 2217
Ellensburg 07:44:18 -65.0 Dark Up 48.1 127.6 Up 07:38:47 - 07:49:49 2186
Yakima 07:44:19 -65.4 Dark Up 48.3 127.3 Up 07:38:48 - 07:49:50 2152
Toppenish/White Swan 07:44:19 -65.7 Dark Up 48.6 127.3 Up 07:38:48 - 07:49:50 2130
Goldendale 07:44:22 -66.2 Dark Up 48.7 126.3 Up 07:38:51 - 07:49:53 2091
The Dalles 07:44:24 -66.4 Dark Up 48.6 125.7 Up 07:38:53 - 07:49:55 2079
PNWRO 07:44:15 -66.1 Dark Up 49.6 128.8 Up 07:38:44 - 07:49:46 2069
Maupin 07:44:25 -66.8 Dark Up 48.9 125.4 Up 07:38:54 - 07:49:56 2041
Sisters 07:44:29 -67.7 Dark Up 49.1 124.0 Up 07:38:58 - 07:50:00 1975
Bend 07:44:29 -67.9 Dark Up 49.4 124.1 Up 07:38:58 - 07:50:00 1949
Oregon Observatory 07:44:30 -68.1 Dark Up 49.4 123.8 Up 07:38:59 - 07:50:01 1936
North Lake 07:44:30 -68.8 Dark Up 50.1 123.8 Up 07:38:59 - 07:50:01 1869
Chiloquin 07:44:35 -69.3 Dark Up 49.9 122.0 Up 07:39:04 - 07:50:06 1828
Klamath Falls 07:44:36 -69.7 Dark Up 50.1 121.8 Up 07:39:05 - 07:50:07 1796
Lakeview 07:44:31 -69.8 Dark Up 51.0 123.3 Up 07:39:00 - 07:50:02 1763
Cedarville 07:44:32 -70.5 Dark Up 51.5 122.9 Up 07:39:01 - 07:50:03 1700
Fall River/Burney 07:44:38 -70.9 Dark Up 51.0 121.0 Up 07:39:07 - 07:50:09 1682
Susanville 07:44:37 -71.6 Dark Up 51.8 121.1 Up 07:39:06 - 07:50:08 1608
Greenville 07:44:39 -71.8 Dark Up 51.8 120.5 Up 07:39:08 - 07:50:10 1589
Gimple 07:44:39 -71.8 Dark Up 51.8 120.6 Up 07:39:08 - 07:50:10 1587
Quincy 07:44:39 -72.0 Dark Up 51.9 120.3 Up 07:39:08 - 07:50:10 1571
Portola 07:44:38 -72.2 Dark Up 52.2 120.7 Up 07:39:07 - 07:50:09 1549
Reno 07:44:36 -72.5 Dark Up 52.8 121.1 Up 07:39:05 - 07:50:07 1510
Carson City 07:44:37 -72.9 Dark Up 53.0 120.8 Up 07:39:06 - 07:50:08 1477
Gardnerville 07:44:38 -73.1 Dark Up 53.2 120.5 Up 07:39:07 - 07:50:09 1453
Yerington 07:44:36 -73.1 Dark Up 53.5 121.3 Up 07:39:05 - 07:50:07 1445
Hawthorne 07:44:35 -73.5 Dark Up 54.1 121.4 Up 07:39:04 - 07:50:06 1390
Lee Vining 07:44:38 -74.1 Dark Up 54.1 120.1 Up 07:39:07 - 07:50:09 1347
Tonopah 07:44:30 -74.0 Dark Up 55.3 122.5 Up 07:38:59 - 07:50:01 1315
Dunrhomin 07:43:37 -68.6 Dark Up 60.6 142.5 Up 07:38:06 - 07:49:08 1290
Bishop 07:44:37 -74.7 Dark Up 54.9 120.2 Up 07:39:06 - 07:50:08 1275
Beatty 07:44:31 -75.1 Dark Up 56.2 121.6 Up 07:39:00 - 07:50:02 1195
Indian Springs 07:44:28 -75.3 Dark Up 57.1 122.5 Up 07:38:57 - 07:49:59 1140
Henderson 07:44:26 -75.7 Dark Up 57.9 122.7 Up 07:38:55 - 07:49:57 1074
Patrick 07:44:23 -76.0 Dark Up 59.0 123.3 Up 07:38:52 - 07:49:54 989
Laughlin/Bullhead City 07:44:27 -76.4 Dark Up 58.6 122.0 Up 07:38:56 - 07:49:58 980
Kingman/Dolan Springs 07:44:25 -76.3 Dark Up 59.0 122.7 Up 07:38:54 - 07:49:56 971
Wildwood 07:44:45 -78.0 Dark Up 56.3 115.8 Up 07:39:14 - 07:50:16 964
Mohave Valley 07:44:27 -76.7 Dark Up 58.8 121.6 Up 07:38:56 - 07:49:58 953
Lake Havasu City 07:44:27 -77.0 Dark Up 59.2 121.4 Up 07:38:56 - 07:49:58 908
Idyllwild 07:44:39 -78.2 Dark Up 57.8 117.4 Up 07:39:08 - 07:50:10 886
Parker 07:44:28 -77.3 Dark Up 59.4 120.9 Up 07:38:57 - 07:49:59 873
Calipatria 07:44:35 -78.6 Dark Up 59.0 118.0 Up 07:39:04 - 07:50:06 799
George/Scottsdale 07:44:18 -76.9 Dark Up 61.3 123.5 Up 07:38:47 - 07:49:49 779
Yuma 07:44:32 -78.8 Dark Up 59.8 118.4 Up 07:39:01 - 07:50:03 736

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 11UQ62, (2023/12/03 07:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.14  55
Alhena         06:37:42.8 +16:23:57  1.9  1.55  42
PPM 122879     06:41:21.9 +16:23:51  5.9  1.02  42
PPM 122881     06:41:22.9 +15:25:38  8.3  0.33  42
PPM 122940     06:43:39.9 +15:35:41  9.9  0.28  41
PPM 122948     06:43:49.1 +15:28:50 10.8  0.27  41
11UQ62         06:42:43.9 +15:25:50 15.9        41
Positions are for J2000

Event circumstances last updated at 2022/02/02 01:17:26 UT

Marc W. Buie, Southwest Research Institute

RECON