RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star GA1060:01834872 with event index number of 2278543

Geocentric closest approach at 2021/12/09 09:09:52 UTC

J2000 position of star is 06:21:42.3 +17:21:55
Equinox of date position of star is 06:22:58.9 +17:21:12
Stellar brightness G=13.5, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 127 degrees from the moon. Moon is 32% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 23.1 AU from the Sun and 22.2 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 198 seconds.
The 1-sigma cross-track error in the shadow position is 1554 km.
The sky-plane scale is 16077.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 9.3 sec chord
Diameter=85.3 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2021/12/09 09:10UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.6 +07:24:34  0.4 11.88 119
Alhena         06:38:58.7 +16:22:43  1.9  3.95 131
PPM 122270     06:20:18.3 +17:18:53  6.1  0.64 127
PPM 122382     06:24:36.7 +17:22:48  8.0  0.39 128
PPM 122336     06:22:44.2 +17:16:54  9.5  0.09 127
463368         06:22:58.9 +17:21:12 13.5       128
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 4.5 sigma about the mid-time.
The median site spacing is 24.8 km RECON observability=1.0 and success probability=7.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:08:58 -51.3 Dark Down 53.5 203.2 Up 08:53:58 - 09:23:58 4881
Kamloops 09:09:42 -58.5 Dark Down 56.7 179.9 Up 08:54:42 - 09:24:42 4788
Kelowna 09:09:39 -58.8 Dark Down 57.5 181.5 Up 08:54:39 - 09:24:39 4708
Peachland 09:09:40 -59.0 Dark Down 57.6 181.0 Up 08:54:40 - 09:24:40 4699
Summerland 09:09:40 -59.1 Dark Down 57.8 181.2 Up 08:54:40 - 09:24:40 4684
Penticton 09:09:40 -59.1 Dark Down 57.8 181.4 Up 08:54:40 - 09:24:40 4677
Oliver 09:09:39 -59.4 Dark Down 58.2 181.4 Up 08:54:39 - 09:24:39 4644
Anarchist Mountain Observatory 09:09:39 -59.5 Dark Down 58.3 181.7 Up 08:54:39 - 09:24:39 4627
Victoria 09:09:52 -61.4 Dark Down 58.7 174.4 Up 08:54:52 - 09:24:52 4604
Tonasket 09:09:39 -59.7 Dark Down 58.7 181.6 Up 08:54:39 - 09:24:39 4598
Okanogan 09:09:40 -60.1 Dark Down 59.0 181.4 Up 08:54:40 - 09:24:40 4567
Brewster 09:09:41 -60.3 Dark Down 59.3 181.0 Up 08:54:41 - 09:24:41 4542
Manson/Chelan 09:09:42 -60.7 Dark Down 59.5 180.3 Up 08:54:42 - 09:24:42 4524
Wenatchee 09:09:43 -61.1 Dark Down 60.0 180.0 Up 08:54:43 - 09:24:43 4480
Ellensburg 09:09:43 -61.5 Dark Down 60.4 179.6 Up 08:54:43 - 09:24:43 4441
Yakima 09:09:44 -61.8 Dark Down 60.8 179.6 Up 08:54:44 - 09:24:44 4402
Toppenish/White Swan 09:09:43 -61.9 Dark Down 61.0 179.9 Up 08:54:43 - 09:24:43 4380
Pasco 09:09:39 -61.5 Dark Down 61.1 182.4 Up 08:54:39 - 09:24:39 4361
PNWRO 09:09:38 -61.5 Dark Down 61.3 182.8 Up 08:54:38 - 09:24:38 4336
Goldendale 09:09:45 -62.6 Dark Down 61.5 179.0 Up 08:54:45 - 09:24:45 4329
The Dalles 09:09:46 -62.9 Dark Down 61.8 178.3 Up 08:54:46 - 09:24:46 4309
Maupin 09:09:46 -63.2 Dark Down 62.2 178.5 Up 08:54:46 - 09:24:46 4268
Sisters 09:09:48 -64.1 Dark Down 63.0 177.4 Up 08:54:48 - 09:24:48 4185
Redmond 09:09:47 -63.9 Dark Down 63.1 178.3 Up 08:54:47 - 09:24:47 4180
Bend 09:09:47 -64.1 Dark Down 63.3 178.0 Up 08:54:47 - 09:24:47 4159
Oregon Observatory 09:09:48 -64.3 Dark Down 63.5 177.7 Up 08:54:48 - 09:24:48 4143
La Pine/Gilchrist 09:09:48 -64.5 Dark Down 63.7 177.5 Up 08:54:48 - 09:24:48 4123
North Lake 09:09:46 -64.5 Dark Down 64.1 178.8 Up 08:54:46 - 09:24:46 4076
Paisley 09:09:45 -64.7 Dark Down 64.7 179.6 Up 08:54:45 - 09:24:45 4019
Chiloquin 09:09:50 -65.5 Dark Down 64.8 176.7 Up 08:54:50 - 09:24:50 4015
Klamath Falls 09:09:50 -65.7 Dark Down 65.1 176.8 Up 08:54:50 - 09:24:50 3980
Lakeview 09:09:45 -65.0 Dark Down 65.2 180.0 Up 08:54:45 - 09:24:45 3967
Cedarville 09:09:44 -65.4 Dark Down 65.8 180.4 Up 08:54:44 - 09:24:44 3900
Fall River/Burney 09:09:48 -66.4 Dark Down 66.3 177.5 Up 08:54:48 - 09:24:48 3858
Susanville 09:09:46 -66.4 Dark Down 66.9 179.3 Up 08:54:46 - 09:24:46 3790
Greenville 09:09:47 -66.7 Dark Down 67.2 178.5 Up 08:54:47 - 09:24:47 3763
Gimple 09:09:47 -66.7 Dark Down 67.2 178.7 Up 08:54:47 - 09:24:47 3763
Quincy 09:09:48 -66.9 Dark Down 67.4 178.5 Up 08:54:48 - 09:24:48 3743
Portola 09:09:46 -66.7 Dark Down 67.6 179.7 Up 08:54:46 - 09:24:46 3727
Dunrhomin 09:08:49 -56.5 Dark Down 63.7 213.8 Up 08:53:49 - 09:23:49 3726
Reno 09:09:43 -66.5 Dark Down 67.8 181.3 Up 08:54:43 - 09:24:43 3695
Carson City 09:09:43 -66.7 Dark Down 68.2 181.4 Up 08:54:43 - 09:24:43 3658
Yerington 09:09:41 -66.4 Dark Down 68.4 183.0 Up 08:54:41 - 09:24:41 3635
Gardnerville 09:09:43 -66.8 Dark Down 68.4 181.5 Up 08:54:43 - 09:24:43 3633
Hawthorne 09:09:39 -66.4 Dark Down 68.8 184.5 Up 08:54:39 - 09:24:39 3583
Lee Vining 09:09:41 -67.0 Dark Down 69.4 183.3 Up 08:54:41 - 09:24:41 3528
Tonopah 09:09:34 -65.7 Dark Down 69.1 188.3 Up 08:54:34 - 09:24:34 3528
Bishop 09:09:39 -66.9 Dark Down 69.9 185.4 Up 08:54:39 - 09:24:39 3461
Beatty 09:09:32 -66.0 Dark Down 70.2 190.0 Up 08:54:32 - 09:24:32 3404
Indian Springs 09:09:28 -65.4 Dark Down 70.4 193.2 Up 08:54:28 - 09:24:28 3365
Henderson 09:09:25 -65.2 Dark Down 70.7 195.5 Up 08:54:25 - 09:24:25 3306
CPSLO 09:09:48 -69.5 Dark Down 72.1 179.1 Up 08:54:48 - 09:24:48 3260
Patrick 09:09:21 -64.6 Dark Down 71.1 199.1 Up 08:54:21 - 09:24:21 3235
Kingman/Dolan Springs 09:09:22 -64.9 Dark Down 71.3 198.8 Up 08:54:22 - 09:24:22 3213
Laughlin/Bullhead City 09:09:24 -65.2 Dark Down 71.5 197.3 Up 08:54:24 - 09:24:24 3212
Mohave Valley 09:09:24 -65.3 Dark Down 71.7 197.6 Up 08:54:24 - 09:24:24 3183
Lake Havasu City 09:09:23 -65.3 Dark Down 72.1 198.7 Up 08:54:23 - 09:24:23 3140
Wildwood 09:09:40 -68.7 Dark Down 73.2 185.7 Up 08:54:40 - 09:24:40 3119
Parker 09:09:23 -65.4 Dark Down 72.4 199.1 Up 08:54:23 - 09:24:23 3102
Idyllwild 09:09:33 -67.4 Dark Down 73.3 192.0 Up 08:54:33 - 09:24:33 3070
George/Scottsdale 09:09:13 -63.7 Dark Down 72.0 206.7 Up 08:54:13 - 09:24:13 3049
Blythe 09:09:24 -65.8 Dark Down 73.0 198.8 Up 08:54:24 - 09:24:24 3048
Calipatria 09:09:28 -66.7 Dark Down 73.7 196.3 Up 08:54:28 - 09:24:28 2999
Yuma 09:09:24 -66.2 Dark Down 73.9 199.7 Up 08:54:24 - 09:24:24 2949

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 463368, (2021/12/09 09:10UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.88 119
Alhena         06:37:42.8 +16:23:57  1.9  3.95 131
PPM 122270     06:19:01.8 +17:19:31  6.1  0.64 127
PPM 122382     06:23:20.1 +17:23:34  8.0  0.39 128
PPM 122336     06:21:27.7 +17:17:37  9.5  0.09 127
463368         06:21:42.3 +17:21:55 13.5       127
Positions are for J2000

Event circumstances last updated at 2021/12/05 01:59:41 UT

Marc W. Buie, Southwest Research Institute

RECON