RECON: TNO occultation with 13VF24

Event between 13VF24 and star GA1080:02532030 with event index number of 2467735

Geocentric closest approach at 2027/12/08 10:06:15 UTC

J2000 position of star is 06:57:11.0 +18:41:33
Equinox of date position of star is 06:58:29.6 +18:39:41
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 93 degrees from the moon. Moon is 71% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 28.5 AU from the Sun and 27.7 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 296 seconds.
The 1-sigma cross-track error in the shadow position is 2556 km.
The sky-plane scale is 20055.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=140.6 km assuming a 5% albedo -- 6.7 sec chord
Diameter=57.4 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 13VF24, (2027/12/08 10:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:01.6 +27:57:23  1.1 14.44 102
Alhena         06:39:19.5 +16:22:23  1.9  5.18  89
PPM 123009     06:47:59.5 +18:48:22  6.5  2.57  91
PPM 123273     06:57:50.0 +18:45:42  8.1  0.26  93
13VF24         06:58:49.1 +18:39:13 15.9        94
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 27.5 km RECON observability=1.0 and success probability=18.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:05:45 -43.4 Dark Down 53.7 209.9 Up 09:50:45 - 10:20:45 -1220
Kamloops 10:06:28 -51.9 Dark Up 57.9 187.0 Up 09:51:28 - 10:21:28 -1553
Kelowna 10:06:25 -51.9 Dark Down 58.6 188.7 Up 09:51:25 - 10:21:25 -1617
Peachland 10:06:26 -52.1 Dark Down 58.7 188.2 Up 09:51:26 - 10:21:26 -1631
Summerland 10:06:25 -52.2 Dark Down 58.9 188.4 Up 09:51:25 - 10:21:25 -1644
Penticton 10:06:25 -52.1 Dark Down 58.9 188.6 Up 09:51:25 - 10:21:25 -1649
Oliver 10:06:25 -52.3 Dark Down 59.3 188.7 Up 09:51:25 - 10:21:25 -1682
Anarchist Mountain Observatory 10:06:24 -52.3 Dark Down 59.4 189.1 Up 09:51:24 - 10:21:24 -1695
Tonasket 10:06:24 -52.5 Dark Down 59.7 189.1 Up 09:51:24 - 10:21:24 -1725
Okanogan 10:06:24 -52.8 Dark Down 60.1 188.9 Up 09:51:24 - 10:21:24 -1759
Brewster 10:06:24 -53.0 Dark Down 60.4 188.6 Up 09:51:24 - 10:21:24 -1787
Victoria 10:06:37 -54.8 Dark Up 60.2 181.7 Up 09:51:37 - 10:21:37 -1791
Manson/Chelan 10:06:25 -53.3 Dark Down 60.6 187.9 Up 09:51:25 - 10:21:25 -1812
Wenatchee 10:06:25 -53.7 Dark Down 61.1 187.7 Up 09:51:25 - 10:21:25 -1859
Ellensburg 10:06:26 -54.0 Dark Down 61.5 187.4 Up 09:51:26 - 10:21:26 -1902
Yakima 10:06:26 -54.2 Dark Down 61.9 187.4 Up 09:51:26 - 10:21:26 -1941
Toppenish/White Swan 10:06:25 -54.3 Dark Down 62.1 187.8 Up 09:51:25 - 10:21:25 -1960
PNWRO 10:06:19 -53.5 Dark Down 62.3 190.9 Up 09:51:19 - 10:21:19 -1975
Goldendale 10:06:26 -54.8 Dark Down 62.7 187.1 Up 09:51:26 - 10:21:26 -2019
The Dalles 10:06:27 -55.1 Dark Down 63.0 186.4 Up 09:51:27 - 10:21:27 -2045
Maupin 10:06:26 -55.3 Dark Down 63.4 186.7 Up 09:51:26 - 10:21:26 -2085
Sisters 10:06:27 -56.0 Dark Down 64.3 185.9 Up 09:51:27 - 10:21:27 -2177
Bend 10:06:26 -55.9 Dark Down 64.5 186.5 Up 09:51:26 - 10:21:26 -2197
Oregon Observatory 10:06:26 -56.1 Dark Down 64.7 186.2 Up 09:51:26 - 10:21:26 -2216
North Lake 10:06:24 -56.1 Dark Down 65.3 187.6 Up 09:51:24 - 10:21:24 -2272
Dunrhomin 10:05:21 -45.9 Dark Down 63.0 222.4 Up 09:50:21 - 10:20:21 -2299
CU-SBO 10:05:21 -46.0 Dark Down 63.3 222.6 Up 09:50:21 - 10:20:21 -2325
Chiloquin 10:06:27 -57.0 Dark Down 66.0 185.6 Up 09:51:27 - 10:21:27 -2353
Lakeview 10:06:21 -56.2 Dark Down 66.3 189.2 Up 09:51:21 - 10:21:21 -2370
Klamath Falls 10:06:26 -57.1 Dark Down 66.4 185.9 Up 09:51:26 - 10:21:26 -2386
Cedarville 10:06:20 -56.3 Dark Down 66.9 189.8 Up 09:51:20 - 10:21:20 -2434
Fall River/Burney 10:06:24 -57.3 Dark Down 67.5 187.1 Up 09:51:24 - 10:21:24 -2499
Susanville 10:06:20 -57.1 Dark Down 68.1 189.1 Up 09:51:20 - 10:21:20 -2553
Gimple 10:06:21 -57.3 Dark Down 68.4 188.7 Up 09:51:21 - 10:21:21 -2584
Greenville 10:06:21 -57.4 Dark Down 68.4 188.5 Up 09:51:21 - 10:21:21 -2585
Quincy 10:06:21 -57.5 Dark Down 68.6 188.5 Up 09:51:21 - 10:21:21 -2606
Portola 10:06:19 -57.2 Dark Down 68.6 189.8 Up 09:51:19 - 10:21:19 -2611
Reno 10:06:17 -56.8 Dark Down 68.8 191.6 Up 09:51:17 - 10:21:17 -2629
Carson City 10:06:16 -56.9 Dark Down 69.2 191.8 Up 09:51:16 - 10:21:16 -2665
Yerington 10:06:13 -56.5 Dark Down 69.2 193.6 Up 09:51:13 - 10:21:13 -2676
Gardnerville 10:06:15 -57.0 Dark Down 69.4 192.1 Up 09:51:15 - 10:21:15 -2690
Hawthorne 10:06:10 -56.3 Dark Down 69.6 195.3 Up 09:51:10 - 10:21:10 -2715
Tonopah 10:06:04 -55.4 Dark Down 69.7 199.3 Up 09:51:04 - 10:21:04 -2740
Lee Vining 10:06:12 -56.8 Dark Down 70.2 194.3 Up 09:51:12 - 10:21:12 -2780
Bishop 10:06:09 -56.4 Dark Down 70.7 196.8 Up 09:51:09 - 10:21:09 -2831
Beatty 10:06:01 -55.3 Dark Down 70.7 201.6 Up 09:51:01 - 10:21:01 -2852
Indian Springs 10:05:56 -54.6 Dark Down 70.6 204.8 Up 09:50:56 - 10:20:56 -2867
Henderson 10:05:53 -54.1 Dark Down 70.9 207.3 Up 09:50:53 - 10:20:53 -2910
Patrick 10:05:47 -53.4 Dark Down 71.0 211.1 Up 09:50:47 - 10:20:47 -2955
Kingman/Dolan Springs 10:05:49 -53.6 Dark Down 71.3 210.9 Up 09:50:49 - 10:20:49 -2981
Laughlin/Bullhead City 10:05:50 -54.0 Dark Down 71.5 209.6 Up 09:50:50 - 10:20:50 -2993
Mohave Valley 10:05:50 -54.0 Dark Down 71.7 210.0 Up 09:50:50 - 10:20:50 -3021
Lake Havasu City 10:05:48 -53.9 Dark Down 72.0 211.3 Up 09:50:48 - 10:20:48 -3058
George/Scottsdale 10:05:38 -52.0 Dark Down 71.4 219.0 Up 09:50:38 - 10:20:38 -3092
Parker 10:05:48 -53.9 Dark Down 72.3 212.0 Up 09:50:48 - 10:20:48 -3094
Wildwood 10:06:06 -57.4 Dark Down 73.8 199.3 Up 09:51:06 - 10:21:06 -3174
Idyllwild 10:05:57 -55.9 Dark Down 73.6 205.6 Up 09:50:57 - 10:20:57 -3180
Calipatria 10:05:52 -55.1 Dark Down 73.6 210.2 Up 09:50:52 - 10:20:52 -3223
Yuma 10:05:47 -54.4 Dark Down 73.6 213.5 Up 09:50:47 - 10:20:47 -3252

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 13VF24, (2027/12/08 10:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 14.44 102
Alhena         06:37:42.8 +16:23:57  1.9  5.18  89
PPM 123009     06:46:21.1 +18:50:16  6.5  2.57  91
PPM 123273     06:56:11.8 +18:48:00  8.1  0.26  93
13VF24         06:57:11.0 +18:41:33 15.9        93
Positions are for J2000

Event circumstances last updated at 2022/05/18 23:04:35 UT

Marc W. Buie, Southwest Research Institute

RECON