RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star GA0520:17557374 with event index number of 2233199

Geocentric closest approach at 2023/06/17 07:18:35 UTC

J2000 position of star is 17:32:36.7 -36:14:09
Equinox of date position of star is 17:34:11.0 -36:15:03
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 22.4 AU from the Sun and 21.5 AU from the Earth.
Apparent velocity is 22.1 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 441 seconds.
The 1-sigma cross-track error in the shadow position is 1405 km.
The sky-plane scale is 15561.9 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=229.1 km assuming a 5% albedo -- 9.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2023/06/17 07:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.0 -26:28:55  0.9 16.64 174
34Ups Sco      17:32:21.7 -37:18:44  2.7  1.12 167
PPM 296389     17:30:31.5 -36:47:44  6.1  0.92 167
PPM 296428     17:32:40.9 -35:54:59  7.8  0.45 168
PPM 296457     17:33:42.7 -36:10:35  9.0  0.12 167
471155         17:34:11.7 -36:15:03 16.9       167
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 2.0 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.1 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)
Sleaford 07:18:30 -14.5 AT Down 1.5 184.7 Really Low 07:03:30 - 07:33:30 4881
Kelowna 07:19:12 -16.2 AT Down 3.6 173.9 Really Low 07:04:12 - 07:34:12 4816
Kamloops 07:19:15 -15.3 AT Down 2.8 173.2 Really Low 07:04:15 - 07:34:15 4814
Peachland 07:19:13 -16.3 AT Down 3.7 173.7 Really Low 07:04:13 - 07:34:13 4813
Penticton 07:19:13 -16.6 AT Down 4.0 173.9 Really Low 07:04:13 - 07:34:13 4812
Summerland 07:19:13 -16.5 AT Down 3.9 173.8 Really Low 07:04:13 - 07:34:13 4812
Anarchist Mountain Observatory 07:19:12 -17.1 AT Down 4.5 174.0 Really Low 07:04:12 - 07:34:12 4810
Oliver 07:19:13 -16.9 AT Down 4.3 173.8 Really Low 07:04:13 - 07:34:13 4809
Okanogan 07:19:13 -17.7 AT Down 5.1 173.8 Really Low 07:04:13 - 07:34:13 4800
Brewster 07:19:14 -17.9 AT Down 5.4 173.7 Really Low 07:04:14 - 07:34:14 4795
Manson/Chelan 07:19:15 -18.1 Dark Down 5.6 173.4 Really Low 07:04:15 - 07:34:15 4789
Wenatchee 07:19:16 -18.6 Dark Down 6.0 173.2 Really Low 07:04:16 - 07:34:16 4781
PNWRO 07:19:12 -20.1 Dark Down 7.5 174.4 Really Low 07:04:12 - 07:34:12 4774
Ellensburg 07:19:17 -18.9 Dark Down 6.4 173.0 Really Low 07:04:17 - 07:34:17 4773
Yakima 07:19:18 -19.3 Dark Down 6.8 173.0 Really Low 07:04:18 - 07:34:18 4767
Toppenish/White Swan 07:19:17 -19.6 Dark Down 7.0 173.2 Really Low 07:04:17 - 07:34:17 4766
Victoria 07:19:25 -17.1 AT Down 4.6 170.8 Really Low 07:04:25 - 07:34:25 4761
The Dalles 07:19:20 -20.2 Dark Down 7.7 172.5 Really Low 07:04:20 - 07:34:20 4745
Maupin 07:19:20 -20.7 Dark Down 8.2 172.6 Really Low 07:04:20 - 07:34:20 4739
Sisters 07:19:22 -21.5 Dark Down 9.0 172.2 Really Low 07:04:22 - 07:34:22 4717
Bend 07:19:22 -21.7 Dark Down 9.3 172.4 Really Low 07:04:22 - 07:34:22 4716
Oregon Observatory 07:19:22 -21.9 Dark Down 9.4 172.3 Really Low 07:04:22 - 07:34:22 4711
Dunrhomin 07:18:23 -26.3 Dark Down 13.3 185.4 Really Low 07:03:23 - 07:33:23 4709
Nikitin 07:18:23 -26.4 Dark Down 13.5 185.4 Really Low 07:03:23 - 07:33:23 4705
CU-SBO 07:18:23 -26.5 Dark Down 13.5 185.4 Really Low 07:03:23 - 07:33:23 4703
Chiloquin 07:19:24 -23.1 Dark Down 10.7 171.9 Really Low 07:04:24 - 07:34:24 4678
Cedarville 07:19:18 -24.4 Dark Down 11.9 173.2 Really Low 07:04:18 - 07:34:18 4673
Klamath Falls 07:19:24 -23.4 Dark Down 11.0 172.0 Really Low 07:04:24 - 07:34:24 4671
Fall River/Burney 07:19:23 -24.7 Dark Down 12.2 172.2 Really Low 07:04:23 - 07:34:23 4646
Gimple 07:19:22 -25.6 Dark Down 13.2 172.6 Really Low 07:04:22 - 07:34:22 4629
Greenville 07:19:22 -25.6 Dark Down 13.2 172.6 Really Low 07:04:22 - 07:34:22 4628
Portola 07:19:20 -26.0 Dark Down 13.6 173.0 Really Low 07:04:20 - 07:34:20 4625
Reno 07:19:18 -26.4 Dark Down 13.9 173.5 Really Low 07:04:18 - 07:34:18 4624
Quincy 07:19:22 -25.8 Dark Down 13.4 172.6 Really Low 07:04:22 - 07:34:22 4622
Yerington 07:19:16 -27.0 Dark Down 14.5 174.0 Really Low 07:04:16 - 07:34:16 4615
Carson City 07:19:18 -26.7 Dark Down 14.2 173.5 Really Low 07:04:18 - 07:34:18 4614
Gardnerville 07:19:18 -27.0 Dark Down 14.5 173.5 Really Low 07:04:18 - 07:34:18 4608
Hawthorne 07:19:14 -27.5 Dark Down 15.0 174.4 Really Low 07:04:14 - 07:34:14 4607
Lee Vining 07:19:16 -28.0 Dark Down 15.5 174.0 Really Low 07:04:16 - 07:34:16 4586
Bishop 07:19:14 -28.7 Dark Down 16.2 174.6 Really Low 07:04:14 - 07:34:14 4574
Beatty 07:19:07 -29.3 Dark Down 16.7 175.9 Really Low 07:04:07 - 07:34:07 4573
Patrick 07:18:56 -31.1 Dark Down 18.3 178.3 Really Low 07:03:56 - 07:33:56 4544
Laughlin/Bullhead City 07:18:58 -31.3 Dark Down 18.6 177.7 Really Low 07:03:58 - 07:33:58 4530
Lake Havasu City 07:18:58 -32.0 Dark Down 19.2 177.9 Really Low 07:03:58 - 07:33:58 4508
George/Scottsdale 07:18:48 -32.9 Dark Down 20.0 180.0 Low 07:03:48 - 07:33:48 4492
Idyllwild 07:19:07 -32.5 Dark Down 19.9 175.9 Really Low 07:04:07 - 07:34:07 4462
Wildwood 07:19:15 -31.9 Dark Down 19.4 174.3 Really Low 07:04:15 - 07:34:15 4457
Calipatria 07:19:03 -33.2 Dark Down 20.6 176.9 Low 07:04:03 - 07:34:03 4447
Yuma 07:18:59 -33.7 Dark Down 21.0 177.6 Low 07:03:59 - 07:33:59 4436

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 471155, (2023/06/17 07:19UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.64 174
34Ups Sco      17:30:45.8 -37:17:46  2.7  1.12 167
PPM 296389     17:28:56.1 -36:46:42  6.1  0.92 167
PPM 296428     17:31:06.3 -35:54:01  7.8  0.45 168
PPM 296457     17:32:07.8 -36:09:40  9.0  0.12 167
471155         17:32:36.7 -36:14:09 16.9       167
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:38:31 UT

Marc W. Buie, Southwest Research Institute

RECON