RECON: TNO occultation with 120061

Event between (120061) 03CO1 and star GA0560:42204930 with event index number of 2138943

Geocentric closest approach at 2022/07/26 09:28:23 UTC

J2000 position of star is 21:08:56.9 -33:30:32
Equinox of date position of star is 21:10:18.4 -33:25:05
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 20.3 AU from the Sun and 19.4 AU from the Earth.
The TNO is moving 23.5 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 71 seconds.
The 1-sigma cross-track error in the shadow position is 1082 km.
The sky-plane scale is 14053.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.1
Diameter=93.3 km assuming a 5% albedo -- 4.0 sec chord
Diameter=38.1 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 120061, (2022/07/26 09:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.5 -29:30:08  1.2 23.41 123
Alnair         22:09:38.7 -46:51:03  1.7 17.52 134
PPM 300997     21:07:47.1 -32:15:00  4.9  1.28 147
PPM 301081     21:11:43.4 -32:45:26  7.3  0.72 146
PPM 301037     21:09:47.1 -33:29:54  9.7  0.14 146
120061         21:10:19.8 -33:24:59 15.4       146
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 19.7 km RECON observability=0.2 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 09:26:28 -20.5 Dark Down 7.8 184.2 Really Low 09:20:04 - 09:32:53 9628
Kamloops 09:26:20 -17.8 AT Down 5.5 186.7 Really Low 09:19:56 - 09:32:45 9567
Peachland 09:26:17 -18.6 Dark Down 6.4 187.2 Really Low 09:19:53 - 09:32:42 9532
Summerland 09:26:18 -18.7 Dark Down 6.5 187.3 Really Low 09:19:53 - 09:32:42 9527
Kelowna 09:26:17 -18.4 Dark Down 6.3 187.5 Really Low 09:19:53 - 09:32:42 9524
Penticton 09:26:18 -18.7 Dark Down 6.6 187.4 Really Low 09:19:53 - 09:32:42 9521
Oliver 09:26:17 -19.1 Dark Down 6.9 187.4 Really Low 09:19:53 - 09:32:42 9515
Manson/Chelan 09:26:19 -20.4 Dark Down 8.3 186.9 Really Low 09:19:54 - 09:32:43 9510
Anarchist Mountain Observatory 09:26:17 -19.2 Dark Down 7.1 187.6 Really Low 09:19:53 - 09:32:42 9506
Wenatchee 09:26:18 -20.9 Dark Down 8.8 186.8 Really Low 09:19:53 - 09:32:42 9506
Ellensburg 09:26:20 -21.3 Dark Down 9.2 186.6 Really Low 09:19:55 - 09:32:44 9505
Tonasket 09:26:17 -19.5 Dark Down 7.4 187.5 Really Low 09:19:53 - 09:32:42 9502
Brewster 09:26:18 -20.1 Dark Down 8.0 187.2 Really Low 09:19:53 - 09:32:42 9502
Okanogan 09:26:17 -19.8 Dark Down 7.7 187.4 Really Low 09:19:53 - 09:32:42 9500
Yakima 09:26:20 -21.7 Dark Down 9.6 186.6 Really Low 09:19:55 - 09:32:44 9496
The Dalles 09:26:22 -22.8 Dark Down 10.6 186.1 Really Low 09:19:57 - 09:32:46 9495
Goldendale 09:26:21 -22.5 Dark Down 10.4 186.4 Really Low 09:19:56 - 09:32:45 9488
Toppenish/White Swan 09:26:19 -21.9 Dark Down 9.8 186.8 Really Low 09:19:55 - 09:32:44 9486
Maupin 09:26:21 -23.2 Dark Down 11.0 186.2 Really Low 09:19:57 - 09:32:46 9481
Sisters 09:26:23 -24.1 Dark Down 11.9 185.8 Really Low 09:19:58 - 09:32:47 9477
Oregon Observatory 09:26:22 -24.5 Dark Down 12.3 185.9 Really Low 09:19:58 - 09:32:47 9462
Bend 09:26:22 -24.3 Dark Down 12.2 186.1 Really Low 09:19:58 - 09:32:47 9462
Chiloquin 09:26:24 -25.8 Dark Down 13.7 185.6 Really Low 09:19:59 - 09:32:48 9441
Klamath Falls 09:26:24 -26.1 Dark Down 14.0 185.7 Really Low 09:19:59 - 09:32:48 9429
North Lake 09:26:21 -25.0 Dark Down 12.9 186.4 Really Low 09:19:56 - 09:32:45 9426
PNWRO 09:26:15 -21.9 Dark Down 10.0 188.0 Really Low 09:19:50 - 09:32:39 9424
Fall River/Burney 09:26:23 -27.2 Dark Down 15.2 186.1 Really Low 09:19:58 - 09:32:47 9379
Lakeview 09:26:20 -25.8 Dark Down 13.9 186.9 Really Low 09:19:55 - 09:32:44 9375
Cedarville 09:26:19 -26.4 Dark Down 14.6 187.1 Really Low 09:19:54 - 09:32:43 9349
Greenville 09:26:21 -27.9 Dark Down 16.0 186.5 Really Low 09:19:57 - 09:32:46 9334
Susanville 09:26:20 -27.6 Dark Down 15.7 186.7 Really Low 09:19:56 - 09:32:45 9332
Gimple 09:26:21 -27.9 Dark Down 16.0 186.5 Really Low 09:19:57 - 09:32:46 9330
Quincy 09:26:21 -28.1 Dark Down 16.2 186.5 Really Low 09:19:57 - 09:32:46 9327
Portola 09:26:21 -28.1 Dark Down 16.3 186.9 Really Low 09:19:56 - 09:32:45 9305
Reno 09:26:18 -28.1 Dark Down 16.5 187.5 Really Low 09:19:53 - 09:32:42 9271
Carson City 09:26:18 -28.5 Dark Down 16.9 187.5 Really Low 09:19:54 - 09:32:43 9257
Gardnerville 09:26:18 -28.7 Dark Down 17.1 187.5 Really Low 09:19:53 - 09:32:42 9247
Yerington 09:26:17 -28.5 Dark Down 17.0 188.0 Really Low 09:19:52 - 09:32:41 9225
Hawthorne 09:26:14 -28.7 Dark Down 17.4 188.5 Really Low 09:19:50 - 09:32:39 9187
Lee Vining 09:26:16 -29.4 Dark Down 18.0 188.1 Really Low 09:19:52 - 09:32:41 9187
Bishop 09:26:14 -29.7 Dark Down 18.5 188.8 Really Low 09:19:49 - 09:32:38 9134
Tonopah 09:26:10 -28.7 Dark Down 17.7 189.7 Really Low 09:19:45 - 09:32:34 9113
Sleaford 09:25:46 -12.7 AT Up 2.2 198.5 Really Low 09:19:21 - 09:32:10 9092
Beatty 09:26:09 -29.6 Dark Down 18.8 190.2 Really Low 09:19:45 - 09:32:34 9048
Wildwood 09:26:15 -32.8 Dark Down 21.8 188.8 Low 09:19:51 - 09:32:40 9008
Indian Springs 09:26:05 -29.5 Dark Down 18.9 191.1 Really Low 09:19:41 - 09:32:30 8988
Henderson 09:26:03 -29.8 Dark Down 19.3 191.8 Really Low 09:19:39 - 09:32:28 8935
Idyllwild 09:26:09 -32.5 Dark Down 21.9 190.5 Low 09:19:45 - 09:32:34 8911
Laughlin/Bullhead City 09:26:02 -30.4 Dark Down 20.1 192.2 Low 09:19:38 - 09:32:27 8879
Mohave Valley 09:26:02 -30.6 Dark Down 20.4 192.2 Low 09:19:38 - 09:32:27 8867
Patrick 09:26:00 -29.9 Dark Down 19.8 192.8 Really Low 09:19:35 - 09:32:24 8858
Kingman/Dolan Springs 09:26:00 -30.2 Dark Down 20.0 192.6 Low 09:19:36 - 09:32:25 8857
Lake Havasu City 09:26:01 -30.9 Dark Down 20.7 192.5 Low 09:19:37 - 09:32:26 8838
Calipatria 09:26:06 -32.6 Dark Down 22.3 191.5 Low 09:19:42 - 09:32:31 8829
Parker 09:26:01 -31.2 Dark Down 21.1 192.5 Low 09:19:36 - 09:32:25 8820
Yuma 09:26:02 -32.6 Dark Down 22.6 192.4 Low 09:19:38 - 09:32:27 8768
George/Scottsdale 09:25:54 -30.6 Dark Down 21.0 194.6 Low 09:19:29 - 09:32:18 8688
Dunrhomin 09:25:35 -22.2 Dark Down 13.2 199.6 Really Low 09:19:11 - 09:32:00 8667
CU-SBO 09:25:35 -22.5 Dark Down 13.5 199.5 Really Low 09:19:11 - 09:32:00 8661

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 120061, (2022/07/26 09:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 23.41 123
Alnair         22:08:14.3 -46:57:43  1.7 17.52 134
PPM 300997     21:06:24.7 -32:20:30  4.9  1.28 147
PPM 301081     21:10:21.0 -32:51:01  7.3  0.72 146
PPM 301037     21:08:24.2 -33:35:26  9.7  0.14 146
120061         21:08:56.9 -33:30:32 15.4       146
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:06:12 UT

Marc W. Buie, Southwest Research Institute

RECON