RECON: TNO occultation with 469505

Event between (469505) 03FE128 and star GA0700:07086070 with event index number of 1734411

Geocentric closest approach at 2027/07/26 07:29:21 UTC

J2000 position of star is 16:52:52.1 -19:04:47
Equinox of date position of star is 16:54:18.2 -19:07:07
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 134 degrees from the moon. Moon is 54% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 37.0 AU from the Sun and 36.3 AU from the Earth.
Apparent velocity is 13.9 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is 1342 km.
The sky-plane scale is 26339.5 km/arcsec.

The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 23.6 sec chord
Diameter=131.5 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 469505, (2027/07/26 07:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.1 -26:29:26  0.9  9.12 139
35Eta Oph      17:11:57.7 -15:45:25  2.6  5.36 129
PPM 232367     16:58:41.3 -19:34:53  6.1  1.09 133
PPM 232254     16:53:57.7 -19:24:05  8.5  0.30 134
PPM 232251     16:53:50.0 -19:12:24  8.9  0.17 134
469505         16:54:29.0 -19:07:24 15.9       133
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 4.9 sigma about the mid-time.
The median site spacing is 61.3 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)
Kamloops 07:26:19 -19.3 Dark Up 11.2 219.9 Really Low 07:11:19 - 07:41:19 5598
Kelowna 07:26:12 -20.2 Dark Up 11.4 220.8 Really Low 07:11:12 - 07:41:12 5548
Peachland 07:26:13 -20.2 Dark Up 11.6 220.5 Really Low 07:11:13 - 07:41:13 5548
Victoria 07:26:23 -21.0 Dark Up 14.1 217.6 Really Low 07:11:23 - 07:41:23 5542
Summerland 07:26:12 -20.4 Dark Up 11.7 220.6 Really Low 07:11:12 - 07:41:12 5539
Penticton 07:26:11 -20.5 Dark Up 11.7 220.7 Really Low 07:11:11 - 07:41:11 5535
Oliver 07:26:10 -20.8 Dark Up 12.0 220.8 Really Low 07:11:10 - 07:41:10 5518
Anarchist Mountain Observatory 07:26:08 -21.0 Dark Up 12.0 221.0 Really Low 07:11:08 - 07:41:08 5508
Okanogan 07:26:07 -21.6 Dark Up 12.6 220.9 Really Low 07:11:07 - 07:41:07 5480
Brewster 07:26:06 -21.9 Dark Up 12.9 220.7 Really Low 07:11:06 - 07:41:06 5469
Manson/Chelan 07:26:07 -22.0 Dark Up 13.2 220.4 Really Low 07:11:07 - 07:41:07 5465
Wenatchee 07:26:06 -22.5 Dark Up 13.7 220.4 Really Low 07:11:06 - 07:41:06 5444
Sleaford 07:25:38 -18.4 Dark Up 3.8 231.8 Really Low 07:10:38 - 07:40:38 5432
Ellensburg 07:26:05 -22.9 Dark Up 14.1 220.2 Really Low 07:11:05 - 07:41:05 5427
Yakima 07:26:03 -23.2 Dark Up 14.4 220.3 Really Low 07:11:03 - 07:41:03 5406
Toppenish/White Swan 07:26:02 -23.5 Dark Up 14.5 220.5 Really Low 07:11:02 - 07:41:02 5393
The Dalles 07:26:02 -24.1 Dark Up 15.5 219.9 Really Low 07:11:02 - 07:41:02 5364
PNWRO 07:25:54 -24.0 Dark Up 14.1 221.8 Really Low 07:10:54 - 07:40:54 5350
Maupin 07:26:00 -24.6 Dark Up 15.7 220.1 Really Low 07:11:00 - 07:41:00 5341
Sisters 07:25:59 -25.3 Dark Up 16.6 219.8 Really Low 07:10:59 - 07:40:59 5301
Bend 07:25:57 -25.6 Dark Up 16.7 220.1 Really Low 07:10:57 - 07:40:57 5284
Oregon Observatory 07:25:57 -25.8 Dark Up 16.9 220.0 Really Low 07:10:57 - 07:40:57 5277
Chiloquin 07:25:54 -27.0 Dark Up 18.1 219.9 Really Low 07:10:54 - 07:40:54 5210
Klamath Falls 07:25:53 -27.3 Dark Up 18.3 220.0 Really Low 07:10:53 - 07:40:53 5189
Cedarville 07:25:43 -28.3 Dark Up 18.1 221.5 Really Low 07:10:43 - 07:40:43 5122
Fall River/Burney 07:25:47 -28.5 Dark Up 19.1 220.6 Really Low 07:10:47 - 07:40:47 5113
Greenville 07:25:42 -29.5 Dark Up 19.5 221.2 Really Low 07:10:42 - 07:40:42 5051
Gimple 07:25:41 -29.5 Dark Up 19.5 221.2 Really Low 07:10:41 - 07:40:41 5049
Quincy 07:25:41 -29.7 Dark Up 19.7 221.2 Really Low 07:10:41 - 07:40:41 5038
Portola 07:25:39 -29.9 Dark Up 19.5 221.6 Really Low 07:10:39 - 07:40:39 5023
Reno 07:25:35 -30.3 Dark Up 19.4 222.2 Really Low 07:10:35 - 07:40:35 4995
Carson City 07:25:33 -30.6 Dark Up 19.7 222.3 Really Low 07:10:33 - 07:40:33 4972
Gardnerville 07:25:32 -30.9 Dark Up 19.8 222.4 Really Low 07:10:32 - 07:40:32 4956
Yerington 07:25:30 -30.9 Dark Up 19.5 222.9 Really Low 07:10:30 - 07:40:30 4949
Hawthorne 07:25:26 -31.4 Dark Up 19.6 223.4 Really Low 07:10:26 - 07:40:26 4910
Lee Vining 07:25:26 -31.9 Dark Up 20.2 223.2 Low 07:10:26 - 07:40:26 4883
Bishop 07:25:21 -32.6 Dark Up 20.3 223.9 Low 07:10:21 - 07:40:21 4830
Beatty 07:25:12 -33.2 Dark Up 19.7 225.3 Really Low 07:10:12 - 07:40:12 4768
Dunrhomin 07:24:40 -30.1 Dark Up 10.7 233.4 Really Low 07:09:40 - 07:39:40 4752
Nikitin 07:24:40 -30.3 Dark Up 10.9 233.4 Really Low 07:09:40 - 07:39:40 4741
CU-SBO 07:24:39 -30.4 Dark Up 10.9 233.3 Really Low 07:09:39 - 07:39:39 4738
Wildwood 07:25:11 -35.8 Dark Up 22.8 224.6 Low 07:10:11 - 07:40:11 4609
Patrick 07:24:54 -35.0 Dark Up 19.1 227.9 Really Low 07:09:54 - 07:39:54 4609
Laughlin/Bullhead City 07:24:57 -35.2 Dark Up 19.7 227.4 Really Low 07:09:57 - 07:39:57 4606
Lake Havasu City 07:24:54 -35.9 Dark Up 20.0 227.8 Really Low 07:09:54 - 07:39:54 4553
Idyllwild 07:25:02 -36.4 Dark Up 21.9 226.2 Low 07:10:02 - 07:40:02 4548
Calipatria 07:24:54 -37.1 Dark Up 21.6 227.3 Low 07:09:54 - 07:39:54 4479
George/Scottsdale 07:24:40 -36.8 Dark Up 19.0 229.8 Really Low 07:09:40 - 07:39:40 4446
Yuma 07:24:48 -37.6 Dark Up 21.4 228.1 Low 07:09:48 - 07:39:48 4429

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 469505, (2027/07/26 07:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.12 139
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.36 129
PPM 232367     16:57:03.9 -19:32:25  6.1  1.09 133
PPM 232254     16:52:20.5 -19:21:26  8.5  0.30 134
PPM 232251     16:52:13.0 -19:09:45  8.9  0.17 134
469505         16:52:52.1 -19:04:47 15.9       134
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:27:35 UT

Marc W. Buie, Southwest Research Institute

RECON