RECON: TNO occultation with 160427

Event between (160427) 05RL43 and star GA1000:00666365 with event index number of 1388239

Geocentric closest approach at 2024/11/19 06:53:25 UTC

J2000 position of star is 05:10:37.3 +10:12:34
Equinox of date position of star is 05:11:47.4 +10:14:04
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 24.7 AU from the Sun and 23.8 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 61 seconds.
The 1-sigma cross-track error in the shadow position is 874 km.
The sky-plane scale is 17272.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 7.4 sec chord
Diameter=67.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 160427, (2024/11/19 06:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.1 +16:33:27  0.8 10.53  35
Bellatrix      05:26:28.0 +06:22:13  1.6  5.27  31
16 Ori         05:10:41.9 +09:51:34  5.4  0.50  31
PPM 148551     05:11:30.2 +09:59:31  7.5  0.27  31
160427         05:11:59.7 +10:14:20 15.7        30
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 20.6 km RECON observability=1.0 and success probability=38.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 06:54:34 -57.9 Dark Up 40.9 132.4 Up 06:49:01 - 07:00:06 -95
Kelowna 06:54:35 -58.2 Dark Up 41.1 132.0 Up 06:49:03 - 07:00:08 -121
Peachland 06:54:36 -58.2 Dark Up 41.0 131.6 Up 06:49:04 - 07:00:09 -124
Summerland 06:54:36 -58.4 Dark Up 41.2 131.6 Up 06:49:04 - 07:00:09 -136
Penticton 06:54:36 -58.5 Dark Up 41.3 131.7 Up 06:49:04 - 07:00:09 -143
Victoria 06:54:49 -58.3 Dark Up 40.0 126.8 Up 06:49:16 - 07:00:21 -149
Oliver 06:54:37 -58.8 Dark Up 41.5 131.5 Up 06:49:05 - 07:00:10 -169
Anarchist Mountain Observatory 06:54:37 -59.0 Dark Up 41.7 131.6 Up 06:49:05 - 07:00:10 -185
Tonasket 06:54:38 -59.3 Dark Up 41.9 131.3 Up 06:49:06 - 07:00:11 -207
Okanogan 06:54:40 -59.6 Dark Up 42.0 130.9 Up 06:49:07 - 07:00:12 -230
Brewster 06:54:41 -59.8 Dark Up 42.1 130.5 Up 06:49:08 - 07:00:13 -246
Manson/Chelan 06:54:42 -59.8 Dark Up 42.1 129.9 Up 06:49:10 - 07:00:15 -255
Wenatchee 06:54:44 -60.2 Dark Up 42.3 129.4 Up 06:49:11 - 07:00:16 -288
Ellensburg 06:54:46 -60.5 Dark Up 42.4 128.9 Up 06:49:13 - 07:00:18 -316
Yakima 06:54:47 -60.9 Dark Up 42.7 128.6 Up 06:49:14 - 07:00:19 -347
Toppenish/White Swan 06:54:47 -61.1 Dark Up 42.9 128.6 Up 06:49:14 - 07:00:19 -367
Pasco 06:54:44 -61.6 Dark Up 43.7 130.0 Up 06:49:11 - 07:00:16 -400
Goldendale 06:54:50 -61.5 Dark Up 43.0 127.8 Up 06:49:17 - 07:00:22 -401
The Dalles 06:54:51 -61.6 Dark Up 43.0 127.2 Up 06:49:19 - 07:00:24 -412
PNWRO 06:54:44 -61.9 Dark Up 43.9 130.1 Up 06:49:12 - 07:00:17 -424
Maupin 06:54:52 -62.0 Dark Up 43.3 127.0 Up 06:49:20 - 07:00:25 -447
Sisters 06:54:56 -62.6 Dark Up 43.5 125.8 Up 06:49:23 - 07:00:28 -507
Redmond 06:54:55 -62.8 Dark Up 43.8 126.2 Up 06:49:22 - 07:00:27 -517
Bend 06:54:56 -62.9 Dark Up 43.8 125.9 Up 06:49:23 - 07:00:28 -531
Oregon Observatory 06:54:56 -63.0 Dark Up 43.8 125.6 Up 06:49:24 - 07:00:29 -542
La Pine/Gilchrist 06:54:57 -63.2 Dark Up 43.9 125.4 Up 06:49:25 - 07:00:30 -557
North Lake 06:54:57 -63.8 Dark Up 44.5 125.7 Up 06:49:24 - 07:00:29 -604
Chiloquin 06:55:01 -64.0 Dark Up 44.4 124.1 Up 06:49:29 - 07:00:34 -640
Paisley 06:54:57 -64.4 Dark Up 45.1 125.7 Up 06:49:25 - 07:00:30 -657
Klamath Falls 06:55:02 -64.3 Dark Up 44.6 124.0 Up 06:49:29 - 07:00:34 -670
Lakeview 06:54:58 -64.9 Dark Up 45.5 125.5 Up 06:49:26 - 07:00:31 -702
Cedarville 06:54:59 -65.5 Dark Up 46.0 125.1 Up 06:49:27 - 07:00:32 -760
Fall River/Burney 06:55:04 -65.5 Dark Up 45.5 123.4 Up 06:49:32 - 07:00:37 -776
Susanville 06:55:03 -66.3 Dark Up 46.3 123.7 Up 06:49:31 - 07:00:36 -844
Greenville 06:55:05 -66.4 Dark Up 46.3 123.1 Up 06:49:32 - 07:00:37 -862
Gimple 06:55:05 -66.4 Dark Up 46.3 123.2 Up 06:49:32 - 07:00:37 -864
Quincy 06:55:05 -66.6 Dark Up 46.4 122.9 Up 06:49:33 - 07:00:38 -879
Portola 06:55:04 -66.9 Dark Up 46.8 123.3 Up 06:49:32 - 07:00:37 -899
Reno 06:55:03 -67.4 Dark Up 47.3 123.8 Up 06:49:31 - 07:00:36 -936
Carson City 06:55:04 -67.7 Dark Up 47.5 123.5 Up 06:49:32 - 07:00:37 -967
Gardnerville 06:55:05 -67.9 Dark Up 47.7 123.3 Up 06:49:32 - 07:00:37 -989
Yerington 06:55:03 -68.1 Dark Up 48.1 124.0 Up 06:49:30 - 07:00:35 -998
Hawthorne 06:55:02 -68.7 Dark Up 48.7 124.2 Up 06:49:30 - 07:00:35 -1049
Lee Vining 06:55:05 -69.0 Dark Up 48.7 123.1 Up 06:49:33 - 07:00:38 -1088
Tonopah 06:54:59 -69.7 Dark Up 49.8 125.3 Up 06:49:26 - 07:00:31 -1120
Bishop 06:55:04 -69.8 Dark Up 49.5 123.3 Up 06:49:32 - 07:00:37 -1157
Dunrhomin 06:54:15 -69.3 Dark Up 54.9 143.2 Up 06:48:42 - 06:59:47 -1170
Beatty 06:55:00 -70.8 Dark Up 50.8 124.7 Up 06:49:28 - 07:00:33 -1233
Indian Springs 06:54:57 -71.5 Dark Up 51.7 125.7 Up 06:49:25 - 07:00:30 -1286
CPSLO 06:55:16 -70.4 Dark Up 49.0 118.9 Up 06:49:44 - 07:00:49 -1292
Henderson 06:54:56 -72.2 Dark Up 52.4 125.9 Up 06:49:24 - 07:00:29 -1350
Patrick 06:54:54 -73.2 Dark Up 53.5 126.6 Up 06:49:21 - 07:00:26 -1431
Laughlin/Bullhead City 06:54:57 -73.2 Dark Up 53.2 125.5 Up 06:49:24 - 07:00:29 -1438
Kingman/Dolan Springs 06:54:55 -73.3 Dark Up 53.6 126.1 Up 06:49:23 - 07:00:28 -1447
Wildwood 06:55:13 -72.4 Dark Up 51.1 119.8 Up 06:49:40 - 07:00:45 -1448
Mohave Valley 06:54:57 -73.4 Dark Up 53.4 125.2 Up 06:49:24 - 07:00:29 -1464
Lake Havasu City 06:54:57 -73.9 Dark Up 53.8 125.1 Up 06:49:25 - 07:00:30 -1506
Idyllwild 06:55:07 -73.6 Dark Up 52.6 121.5 Up 06:49:35 - 07:00:40 -1523
Parker 06:54:58 -74.2 Dark Up 54.0 124.7 Up 06:49:26 - 07:00:31 -1540
Blythe 06:55:00 -74.6 Dark Up 54.1 123.7 Up 06:49:27 - 07:00:32 -1582
Calipatria 06:55:04 -74.6 Dark Up 53.7 122.1 Up 06:49:32 - 07:00:37 -1607
George/Scottsdale 06:54:51 -75.3 Dark Up 55.9 127.2 Up 06:49:18 - 07:00:23 -1633
Yuma 06:55:02 -75.4 Dark Up 54.6 122.6 Up 06:49:29 - 07:00:34 -1668

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 160427, (2024/11/19 06:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.53  35
Bellatrix      05:25:07.8 +06:20:58  1.6  5.27  31
16 Ori         05:09:19.7 +09:49:46  5.4  0.50  31
PPM 148551     05:10:08.0 +09:57:45  7.5  0.27  31
160427         05:10:37.3 +10:12:34 15.7        31
Positions are for J2000

Event circumstances last updated at 2021/02/28 01:28:35 UT

Marc W. Buie, Southwest Research Institute

RECON