RECON: TNO occultation with 119979

Event between (119979) 02WC19 and star GA1100:01946892 with event index number of 2115840

Geocentric closest approach at 2022/11/23 13:01:02 UTC

J2000 position of star is 06:20:13.4 +20:47:06
Equinox of date position of star is 06:21:34.8 +20:46:25
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 39.5 AU from the Sun and 38.7 AU from the Earth.
The TNO is moving 20.3 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 244 seconds.
The 1-sigma cross-track error in the shadow position is 1689 km.
The sky-plane scale is 28035.8 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 34.6 sec chord
Diameter=282.4 km assuming a 30% albedo -- 14.1 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 119979, (2022/11/23 13:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.7 +07:24:34  0.4 14.69 143
Alhena         06:39:02.1 +16:22:40  1.9  6.03 136
16 Gem         06:29:18.4 +20:28:49  6.1  1.83 139
PPM 122302     06:21:33.5 +19:51:45  8.5  0.91 141
PPM 095797     06:21:39.7 +20:32:04  9.1  0.24 141
PPM 095818     06:22:17.3 +20:38:48 11.9  0.21 141
119979         06:21:35.4 +20:46:25 17.0       140
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 3.7 sigma about the mid-time.
The median site spacing is 26.8 km RECON observability=0.9 and success probability=21.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:58:29 -14.7 AT Down 36.9 256.0 Up 12:43:29 - 13:13:29 -252
Kamloops 12:58:57 -23.3 Dark Down 45.7 243.2 Up 12:43:57 - 13:13:57 -659
Kelowna 12:58:52 -22.7 Dark Down 45.6 244.9 Up 12:43:52 - 13:13:52 -713
Peachland 12:58:52 -22.8 Dark Down 45.8 244.7 Up 12:43:52 - 13:13:52 -728
Summerland 12:58:52 -22.8 Dark Down 45.8 244.9 Up 12:43:52 - 13:13:52 -739
Penticton 12:58:51 -22.7 Dark Down 45.8 245.1 Up 12:43:51 - 13:13:51 -743
Oliver 12:58:50 -22.7 Dark Down 45.9 245.4 Up 12:43:50 - 13:13:50 -774
Anarchist Mountain Observatory 12:58:49 -22.5 Dark Down 45.9 245.8 Up 12:43:49 - 13:13:49 -785
Tonasket 12:58:48 -22.5 Dark Down 46.1 246.0 Up 12:43:48 - 13:13:48 -814
Okanogan 12:58:48 -22.6 Dark Down 46.3 246.2 Up 12:43:48 - 13:13:48 -847
Brewster 12:58:48 -22.7 Dark Down 46.5 246.2 Up 12:43:48 - 13:13:48 -875
Manson/Chelan 12:58:48 -22.9 Dark Down 46.8 246.1 Up 12:43:48 - 13:13:48 -901
Victoria 12:58:59 -25.1 Dark Down 48.5 242.0 Up 12:43:59 - 13:13:59 -906
Wenatchee 12:58:47 -23.0 Dark Down 47.1 246.3 Up 12:43:47 - 13:13:47 -947
Ellensburg 12:58:46 -23.1 Dark Down 47.4 246.5 Up 12:43:46 - 13:13:46 -989
Yakima 12:58:46 -23.1 Dark Down 47.6 246.9 Up 12:43:46 - 13:13:46 -1026
Toppenish/White Swan 12:58:44 -23.0 Dark Down 47.6 247.3 Up 12:43:44 - 13:13:44 -1042
PNWRO 12:58:39 -21.9 Dark Down 46.8 249.1 Up 12:43:39 - 13:13:39 -1045
Goldendale 12:58:44 -23.2 Dark Down 48.1 247.4 Up 12:43:44 - 13:13:44 -1101
The Dalles 12:58:44 -23.4 Dark Down 48.4 247.3 Up 12:43:44 - 13:13:44 -1130
Maupin 12:58:43 -23.3 Dark Down 48.5 247.8 Up 12:43:43 - 13:13:43 -1166
Dunrhomin 12:57:48 -11.0 NT Down 38.4 265.6 Up 12:42:48 - 13:12:48 -1243
Sisters 12:58:42 -23.6 Dark Down 49.2 248.3 Up 12:43:42 - 13:13:42 -1258
CU-SBO 12:57:47 -11.0 NT Down 38.5 265.7 Up 12:42:47 - 13:12:47 -1269
Bend 12:58:41 -23.4 Dark Down 49.1 248.8 Up 12:43:41 - 13:13:41 -1275
Oregon Observatory 12:58:41 -23.4 Dark Down 49.2 248.8 Up 12:43:41 - 13:13:41 -1294
North Lake 12:58:38 -23.0 Dark Down 49.1 250.0 Up 12:43:38 - 13:13:38 -1343
Chiloquin 12:58:39 -23.6 Dark Down 50.0 249.9 Up 12:43:39 - 13:13:39 -1427
Lakeview 12:58:33 -22.5 Dark Down 49.1 251.7 Up 12:43:33 - 13:13:33 -1431
Klamath Falls 12:58:38 -23.5 Dark Down 50.0 250.3 Up 12:43:38 - 13:13:38 -1458
Cedarville 12:58:31 -22.2 Dark Down 49.1 252.6 Up 12:43:31 - 13:13:31 -1490
Fall River/Burney 12:58:33 -23.1 Dark Down 50.2 252.0 Up 12:43:33 - 13:13:33 -1563
Susanville 12:58:30 -22.5 Dark Down 49.8 253.4 Up 12:43:30 - 13:13:30 -1607
Gimple 12:58:30 -22.6 Dark Down 50.1 253.5 Up 12:43:30 - 13:13:30 -1639
Greenville 12:58:30 -22.6 Dark Down 50.1 253.4 Up 12:43:30 - 13:13:30 -1641
Quincy 12:58:29 -22.6 Dark Down 50.2 253.7 Up 12:43:29 - 13:13:29 -1660
Portola 12:58:28 -22.2 Dark Down 49.9 254.2 Up 12:43:28 - 13:13:28 -1662
Reno 12:58:25 -21.7 Dark Down 49.5 255.1 Up 12:43:25 - 13:13:25 -1673
Carson City 12:58:24 -21.6 Dark Down 49.5 255.5 Up 12:43:24 - 13:13:24 -1707
Yerington 12:58:21 -21.1 Dark Down 49.1 256.3 Up 12:43:21 - 13:13:21 -1712
Gardnerville 12:58:23 -21.6 Dark Down 49.6 255.8 Up 12:43:23 - 13:13:23 -1730
Hawthorne 12:58:19 -20.6 Dark Down 48.8 257.2 Up 12:43:19 - 13:13:19 -1745
Tonopah 12:58:13 -19.5 Dark Down 47.8 258.9 Up 12:43:13 - 13:13:13 -1757
Lee Vining 12:58:19 -20.9 Dark Down 49.3 257.5 Up 12:43:19 - 13:13:19 -1811
Bishop 12:58:15 -20.3 Dark Down 48.9 258.7 Up 12:43:15 - 13:13:15 -1853
Beatty 12:58:09 -18.9 Dark Down 47.7 260.4 Up 12:43:09 - 13:13:09 -1859
Indian Springs 12:58:05 -18.0 Dark Down 46.9 261.6 Up 12:43:05 - 13:13:05 -1865
Henderson 12:58:02 -17.4 AT Down 46.5 262.6 Up 12:43:02 - 13:13:02 -1900
Patrick 12:57:57 -16.3 AT Down 45.6 264.0 Up 12:42:57 - 13:12:57 -1933
Kingman/Dolan Springs 12:57:56 -16.4 AT Down 45.8 264.1 Up 12:42:56 - 13:12:56 -1959
Laughlin/Bullhead City 12:57:58 -16.8 AT Down 46.2 263.8 Up 12:42:58 - 13:12:58 -1975
Mohave Valley 12:57:57 -16.8 AT Down 46.3 264.1 Up 12:42:57 - 13:12:57 -2002
Lake Havasu City 12:57:56 -16.5 AT Down 46.1 264.7 Up 12:42:56 - 13:12:56 -2035
George/Scottsdale 12:57:47 -14.3 AT Down 44.2 266.9 Up 12:42:47 - 13:12:47 -2046
Parker 12:57:55 -16.4 AT Down 46.1 265.0 Up 12:42:55 - 13:12:55 -2069
Idyllwild 12:58:01 -18.2 Dark Down 48.1 263.9 Up 12:43:01 - 13:13:01 -2172
Wildwood 12:58:08 -19.8 Dark Down 49.6 262.3 Up 12:43:08 - 13:13:08 -2184
Calipatria 12:57:56 -17.1 AT Down 47.2 265.3 Up 12:42:56 - 13:12:56 -2203
Yuma 12:57:52 -16.3 AT Down 46.5 266.3 Up 12:42:52 - 13:12:52 -2223

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 119979, (2022/11/23 13:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.69 143
Alhena         06:37:42.8 +16:23:57  1.9  6.03 136
16 Gem         06:27:56.7 +20:29:46  6.1  1.83 139
PPM 122302     06:20:12.1 +19:52:27  8.5  0.91 141
PPM 095797     06:20:17.9 +20:32:46  9.1  0.24 141
PPM 095818     06:20:55.5 +20:39:31 11.9  0.21 141
119979         06:20:13.4 +20:47:06 17.0       141
Positions are for J2000

Event circumstances last updated at 2022/09/30 04:13:43 UT

Marc W. Buie, Southwest Research Institute

RECON