RECON: TNO occultation with 14YD50

Event between 14YD50 and star GA0940:03351104 with event index number of 2574491

Geocentric closest approach at 2022/10/28 10:07:23 UTC

J2000 position of star is 09:05:20.2 +05:53:46
Equinox of date position of star is 09:06:30.5 +05:48:24
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 33.6 AU from the Sun and 33.8 AU from the Earth.
The TNO is moving 13.5 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 132 seconds.
The 1-sigma cross-track error in the shadow position is 1739 km.
The sky-plane scale is 24487.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 20.6 sec chord
Diameter=112.4 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 14YD50, (2022/10/28 10:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.1 +11:51:17  1.3 16.70 104
Alphard        09:28:42.5 -08:45:31  2.0 15.58 104
18Ome Hya      09:07:10.4 +04:59:59  5.0  0.82 115
PPM 155475     09:10:14.3 +05:30:49  8.3  0.96 115
PPM 155376     09:05:23.8 +05:41:07  9.5  0.31 116
14YD50         09:06:32.5 +05:48:14 16.3       115
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 34.0 km RECON observability=0.4 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)
Sleaford 10:00:32 -35.3 Dark Down 25.4 115.1 Low 09:49:04 - 10:12:00 3526
Kamloops 10:00:00 -43.6 Dark Down 17.2 102.0 Really Low 09:48:32 - 10:11:28 3158
Kelowna 10:00:02 -43.7 Dark Down 17.9 102.5 Really Low 09:48:34 - 10:11:30 3080
Peachland 10:00:02 -43.9 Dark Down 17.8 102.2 Really Low 09:48:34 - 10:11:30 3065
Summerland 10:00:01 -44.0 Dark Down 17.8 102.2 Really Low 09:48:33 - 10:11:29 3049
Penticton 10:00:00 -44.0 Dark Down 17.9 102.3 Really Low 09:48:32 - 10:11:28 3044
Oliver 10:00:00 -44.2 Dark Down 18.0 102.2 Really Low 09:48:32 - 10:11:28 3006
Anarchist Mountain Observatory 10:00:00 -44.2 Dark Down 18.2 102.3 Really Low 09:48:32 - 10:11:28 2989
Tonasket 10:00:01 -44.4 Dark Down 18.2 102.1 Really Low 09:48:33 - 10:11:29 2955
Okanogan 10:00:02 -44.7 Dark Down 18.2 101.9 Really Low 09:48:34 - 10:11:30 2917
Victoria 09:59:54 -46.5 Dark Down 15.6 98.9 Really Low 09:48:26 - 10:11:22 2897
Brewster 10:00:00 -45.0 Dark Down 18.1 101.7 Really Low 09:48:32 - 10:11:28 2885
Manson/Chelan 09:59:59 -45.3 Dark Down 17.9 101.3 Really Low 09:48:31 - 10:11:27 2858
Wenatchee 09:59:59 -45.7 Dark Down 17.9 101.0 Really Low 09:48:31 - 10:11:27 2805
Ellensburg 09:59:57 -46.1 Dark Down 17.8 100.7 Really Low 09:48:29 - 10:11:25 2757
Yakima 09:59:58 -46.4 Dark Down 17.8 100.6 Really Low 09:48:30 - 10:11:26 2713
Toppenish/White Swan 09:59:59 -46.4 Dark Down 18.0 100.6 Really Low 09:48:31 - 10:11:27 2691
PNWRO 09:59:59 -45.8 Dark Down 19.1 101.7 Really Low 09:48:31 - 10:11:27 2668
Goldendale 09:59:55 -47.0 Dark Down 17.8 100.1 Really Low 09:48:27 - 10:11:23 2626
The Dalles 09:59:55 -47.3 Dark Down 17.6 99.8 Really Low 09:48:27 - 10:11:23 2598
Maupin 09:59:55 -47.5 Dark Down 17.7 99.7 Really Low 09:48:27 - 10:11:23 2553
Sisters 09:59:54 -48.4 Dark Down 17.5 99.1 Really Low 09:48:26 - 10:11:22 2451
Bend 09:59:53 -48.4 Dark Down 17.7 99.2 Really Low 09:48:25 - 10:11:21 2428
Oregon Observatory 09:59:53 -48.5 Dark Down 17.7 99.0 Really Low 09:48:25 - 10:11:21 2408
North Lake 09:59:54 -48.6 Dark Down 18.2 99.2 Really Low 09:48:26 - 10:11:22 2343
Dunrhomin 10:00:35 -39.4 Dark Down 30.4 109.9 Up 09:49:07 - 10:12:03 2308
CU-SBO 10:00:35 -39.5 Dark Down 30.4 109.7 Up 09:49:07 - 10:12:03 2279
Chiloquin 09:59:54 -49.6 Dark Down 17.6 98.3 Really Low 09:48:26 - 10:11:22 2258
Lakeview 09:59:56 -48.9 Dark Down 18.8 99.3 Really Low 09:48:28 - 10:11:24 2233
Klamath Falls 09:59:52 -49.7 Dark Down 17.7 98.3 Really Low 09:48:24 - 10:11:20 2222
Cedarville 09:59:55 -49.1 Dark Down 19.0 99.2 Really Low 09:48:27 - 10:11:23 2163
Fall River/Burney 09:59:53 -50.2 Dark Down 18.1 98.2 Really Low 09:48:25 - 10:11:21 2096
Susanville 09:59:55 -50.1 Dark Down 18.8 98.5 Really Low 09:48:27 - 10:11:23 2035
Gimple 09:59:56 -50.4 Dark Down 18.7 98.2 Really Low 09:48:28 - 10:11:24 2002
Greenville 09:59:54 -50.4 Dark Down 18.6 98.2 Really Low 09:48:26 - 10:11:22 2001
Quincy 09:59:55 -50.5 Dark Down 18.6 98.1 Really Low 09:48:27 - 10:11:23 1979
Portola 09:59:56 -50.3 Dark Down 19.0 98.4 Really Low 09:48:28 - 10:11:24 1971
Reno 09:59:57 -50.0 Dark Down 19.6 98.7 Really Low 09:48:29 - 10:11:25 1949
Carson City 09:59:57 -50.2 Dark Down 19.6 98.6 Really Low 09:48:29 - 10:11:25 1910
Yerington 09:59:59 -49.8 Dark Down 20.2 99.0 Low 09:48:31 - 10:11:27 1897
Gardnerville 09:59:57 -50.3 Dark Down 19.7 98.6 Really Low 09:48:29 - 10:11:25 1884
Hawthorne 10:00:00 -49.7 Dark Down 20.6 99.2 Low 09:48:32 - 10:11:28 1854
Tonopah 10:00:04 -48.9 Dark Down 21.8 100.0 Low 09:48:36 - 10:11:32 1823
Lee Vining 09:59:59 -50.3 Dark Down 20.4 98.7 Low 09:48:31 - 10:11:27 1785
Bishop 10:00:01 -50.1 Dark Down 21.0 98.9 Low 09:48:33 - 10:11:29 1729
Beatty 10:00:05 -49.1 Dark Down 22.4 99.8 Low 09:48:37 - 10:11:33 1704
Indian Springs 10:00:08 -48.5 Dark Down 23.3 100.4 Low 09:48:40 - 10:11:36 1686
Henderson 10:00:11 -48.2 Dark Down 24.0 100.6 Low 09:48:43 - 10:11:39 1640
Patrick 10:00:14 -47.5 Dark Down 25.0 101.1 Low 09:48:46 - 10:11:42 1593
Kingman/Dolan Springs 10:00:14 -47.8 Dark Down 24.9 100.9 Low 09:48:46 - 10:11:42 1565
Laughlin/Bullhead City 10:00:12 -48.2 Dark Down 24.5 100.5 Low 09:48:44 - 10:11:40 1553
Mohave Valley 10:00:14 -48.3 Dark Down 24.5 100.4 Low 09:48:46 - 10:11:42 1523
Lake Havasu City 10:00:14 -48.2 Dark Down 24.8 100.4 Low 09:48:46 - 10:11:42 1485
George/Scottsdale 10:00:22 -46.5 Dark Down 27.0 101.6 Low 09:48:54 - 10:11:50 1451
Parker 10:00:15 -48.3 Dark Down 24.9 100.2 Low 09:48:47 - 10:11:43 1447
Wildwood 10:00:06 -51.7 Dark Down 21.3 97.5 Low 09:48:38 - 10:11:34 1369
Idyllwild 10:00:10 -50.4 Dark Down 23.0 98.5 Low 09:48:42 - 10:11:38 1359
Calipatria 10:00:14 -49.6 Dark Down 24.0 99.0 Low 09:48:46 - 10:11:42 1314
Yuma 10:00:15 -49.1 Dark Down 24.9 99.4 Low 09:48:47 - 10:11:43 1284

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 14YD50, (2022/10/28 10:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 16.70 104
Alphard        09:27:35.2 -08:39:30  2.0 15.58 104
18Ome Hya      09:05:58.3 +05:05:32  5.0  0.82 115
PPM 155475     09:09:02.1 +05:36:26  8.3  0.96 115
PPM 155376     09:04:11.5 +05:46:37  9.5  0.31 116
14YD50         09:05:20.2 +05:53:46 16.3       116
Positions are for J2000

Event circumstances last updated at 2022/03/12 01:48:35 UT

Marc W. Buie, Southwest Research Institute

RECON