RECON: TNO occultation with 523744

Event between (523744) 14TC86 and star GA1100:03076251 with event index number of 2323391

Geocentric closest approach at 2021/12/24 10:00:46 UTC

J2000 position of star is 08:31:42.2 +20:01:55
Equinox of date position of star is 08:32:58.0 +19:57:24
Stellar brightness G=12.5, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 41.7 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 101 seconds.
The 1-sigma cross-track error in the shadow position is 1537 km.
The sky-plane scale is 29674.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=413.1 km assuming a 5% albedo -- 19.9 sec chord
Diameter=168.6 km assuming a 30% albedo -- 8.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 523744, (2021/12/24 10:01UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:39.5 +27:58:17  1.1 13.26  37
33Eta Cnc      08:33:58.6 +20:21:54  5.3  0.47  26
PPM 125371     08:32:56.8 +19:23:08  8.4  0.57  26
PPM 098796     08:33:55.3 +20:04:16  8.8  0.25  26
523744         08:32:58.2 +19:57:23 12.5        26
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 23.5 km RECON observability=1.0 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:00:59 -45.7 Dark Up 57.1 196.7 Up 09:52:03 - 10:09:54 8494
Kamloops 10:01:42 -54.1 Dark Up 59.1 171.4 Up 09:52:47 - 10:10:38 8093
Kelowna 10:01:40 -54.1 Dark Up 60.0 172.8 Up 09:52:44 - 10:10:35 8031
Peachland 10:01:40 -54.4 Dark Up 60.1 172.2 Up 09:52:45 - 10:10:36 8016
Summerland 10:01:40 -54.4 Dark Up 60.3 172.4 Up 09:52:45 - 10:10:36 8003
Penticton 10:01:40 -54.4 Dark Up 60.3 172.6 Up 09:52:44 - 10:10:35 7999
Oliver 10:01:39 -54.6 Dark Up 60.7 172.5 Up 09:52:43 - 10:10:34 7965
Anarchist Mountain Observatory 10:01:38 -54.6 Dark Up 60.9 172.8 Up 09:52:43 - 10:10:34 7953
Tonasket 10:01:37 -54.8 Dark Up 61.2 172.6 Up 09:52:41 - 10:10:32 7922
Okanogan 10:01:38 -55.1 Dark Up 61.5 172.2 Up 09:52:43 - 10:10:34 7887
Brewster 10:01:39 -55.3 Dark Up 61.7 171.8 Up 09:52:44 - 10:10:35 7857
Victoria 10:01:52 -57.0 Dark Up 60.8 165.0 Up 09:52:57 - 10:10:48 7838
Manson/Chelan 10:01:40 -55.7 Dark Up 61.9 171.0 Up 09:52:45 - 10:10:36 7831
Wenatchee 10:01:40 -56.0 Dark Up 62.4 170.5 Up 09:52:45 - 10:10:36 7782
Ellensburg 10:01:41 -56.4 Dark Up 62.7 169.9 Up 09:52:46 - 10:10:37 7738
Yakima 10:01:41 -56.6 Dark Up 63.1 169.7 Up 09:52:45 - 10:10:36 7698
Pasco 10:01:33 -56.0 Dark Up 63.6 172.6 Up 09:52:38 - 10:10:29 7691
Toppenish/White Swan 10:01:40 -56.6 Dark Up 63.4 170.0 Up 09:52:44 - 10:10:35 7679
PNWRO 10:01:34 -56.0 Dark Up 63.9 173.0 Up 09:52:38 - 10:10:29 7671
Goldendale 10:01:40 -57.2 Dark Up 63.9 168.9 Up 09:52:44 - 10:10:35 7618
The Dalles 10:01:41 -57.5 Dark Up 64.0 168.1 Up 09:52:46 - 10:10:37 7589
Maupin 10:01:41 -57.7 Dark Up 64.5 168.1 Up 09:52:46 - 10:10:37 7550
Redmond 10:01:40 -58.2 Dark Up 65.3 167.5 Up 09:52:45 - 10:10:36 7458
Sisters 10:01:42 -58.5 Dark Up 65.2 166.6 Up 09:52:46 - 10:10:37 7454
Bend 10:01:42 -58.4 Dark Up 65.5 167.1 Up 09:52:46 - 10:10:37 7434
Dunrhomin 10:00:34 -48.7 Dark Up 68.0 206.4 Up 09:51:38 - 10:09:29 7420
Oregon Observatory 10:01:41 -58.6 Dark Up 65.7 166.7 Up 09:52:45 - 10:10:36 7415
La Pine/Gilchrist 10:01:41 -58.7 Dark Up 65.9 166.4 Up 09:52:45 - 10:10:36 7393
North Lake 10:01:38 -58.6 Dark Up 66.4 167.6 Up 09:52:43 - 10:10:34 7361
Paisley 10:01:37 -58.6 Dark Up 67.0 168.2 Up 09:52:42 - 10:10:33 7312
Chiloquin 10:01:42 -59.5 Dark Up 66.9 165.0 Up 09:52:46 - 10:10:37 7275
Lakeview 10:01:35 -58.7 Dark Up 67.5 168.3 Up 09:52:39 - 10:10:30 7264
Klamath Falls 10:01:40 -59.6 Dark Up 67.2 165.0 Up 09:52:45 - 10:10:36 7242
Cedarville 10:01:33 -58.9 Dark Up 68.2 168.4 Up 09:52:38 - 10:10:29 7201
Fall River/Burney 10:01:38 -59.9 Dark Up 68.4 165.1 Up 09:52:43 - 10:10:34 7129
Susanville 10:01:35 -59.7 Dark Up 69.2 166.6 Up 09:52:39 - 10:10:30 7079
Gimple 10:01:36 -60.0 Dark Up 69.4 165.9 Up 09:52:40 - 10:10:31 7046
Greenville 10:01:35 -60.0 Dark Up 69.4 165.7 Up 09:52:40 - 10:10:31 7045
Quincy 10:01:36 -60.1 Dark Up 69.6 165.6 Up 09:52:40 - 10:10:31 7024
Portola 10:01:33 -59.9 Dark Up 69.8 166.7 Up 09:52:37 - 10:10:28 7021
Reno 10:01:31 -59.5 Dark Up 70.2 168.3 Up 09:52:35 - 10:10:26 7006
Carson City 10:01:31 -59.6 Dark Up 70.5 168.1 Up 09:52:36 - 10:10:27 6970
Yerington 10:01:28 -59.2 Dark Up 70.8 169.8 Up 09:52:32 - 10:10:23 6963
Gardnerville 10:01:29 -59.7 Dark Up 70.8 168.1 Up 09:52:34 - 10:10:25 6946
Hawthorne 10:01:24 -59.0 Dark Up 71.3 171.0 Up 09:52:29 - 10:10:20 6926
Tonopah 10:01:18 -58.1 Dark Up 71.9 175.0 Up 09:52:23 - 10:10:14 6908
Lee Vining 10:01:26 -59.6 Dark Up 71.8 169.3 Up 09:52:30 - 10:10:21 6858
Bishop 10:01:23 -59.2 Dark Up 72.5 171.2 Up 09:52:27 - 10:10:18 6811
Beatty 10:01:14 -58.1 Dark Up 73.1 176.1 Up 09:52:19 - 10:10:10 6799
Indian Springs 10:01:09 -57.4 Dark Up 73.5 179.5 Up 09:52:13 - 10:10:04 6790
Henderson 10:01:06 -57.0 Dark Up 74.0 181.8 Up 09:52:10 - 10:10:01 6751
Patrick 10:01:01 -56.2 Dark Up 74.6 185.7 Up 09:52:06 - 10:09:57 6713
Kingman/Dolan Springs 10:01:01 -56.4 Dark Up 74.8 185.1 Up 09:52:06 - 10:09:57 6686
Laughlin/Bullhead City 10:01:04 -56.9 Dark Up 74.8 183.3 Up 09:52:08 - 10:09:59 6671
Mohave Valley 10:01:03 -56.9 Dark Up 75.1 183.4 Up 09:52:08 - 10:09:59 6643
Lake Havasu City 10:01:02 -56.8 Dark Up 75.5 184.4 Up 09:52:06 - 10:09:57 6607
George/Scottsdale 10:00:51 -54.9 Dark Up 75.9 194.0 Up 09:51:55 - 10:09:46 6589
Parker 10:01:01 -56.8 Dark Up 75.8 184.6 Up 09:52:05 - 10:09:56 6571
CPSLO 10:01:29 -61.6 Dark Up 74.1 162.4 Up 09:52:34 - 10:10:25 6549
Blythe 10:01:02 -57.1 Dark Up 76.4 183.6 Up 09:52:06 - 10:09:57 6510
Idyllwild 10:01:10 -58.8 Dark Up 76.3 175.3 Up 09:52:15 - 10:10:06 6472
Wildwood 10:01:20 -60.3 Dark Up 75.7 168.4 Up 09:52:25 - 10:10:16 6466
Calipatria 10:01:06 -58.0 Dark Up 76.9 179.9 Up 09:52:10 - 10:10:01 6436
Yuma 10:01:01 -57.3 Dark Up 77.3 183.7 Up 09:52:05 - 10:09:56 6412

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 523744, (2021/12/24 10:01UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.26  37
33Eta Cnc      08:32:42.4 +20:26:27  5.3  0.47  26
PPM 125371     08:31:41.1 +19:27:40  8.4  0.57  26
PPM 098796     08:32:39.3 +20:08:49  8.8  0.25  26
523744         08:31:42.2 +20:01:55 12.5        26
Positions are for J2000

Event circumstances last updated at 2021/12/06 01:44:30 UT

Marc W. Buie, Southwest Research Institute

RECON