RECON: TNO occultation with 160427

Event between (160427) 05RL43 and star GA1000:00666365 with event index number of 1967156

Geocentric closest approach at 2024/11/19 06:53:01 UTC

J2000 position of star is 05:10:37.3 +10:12:34
Equinox of date position of star is 05:11:50.5 +10:14:08
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=21.9

[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 56 seconds.
The 1-sigma cross-track error in the shadow position is 871 km.
The sky-plane scale is 17272.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 6.9 sec chord
Diameter=63.2 km assuming a 30% albedo -- 2.8 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 23.3 km RECON observability=1.0 and success probability=38.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:54:12 -57.2 Dark Up 40.1 131.4 Up 06:49:03 - 06:59:22 -116
Kelowna 06:54:13 -58.2 Dark Up 41.0 131.9 Up 06:49:03 - 06:59:22 -190
Peachland 06:54:14 -58.2 Dark Up 41.0 131.5 Up 06:49:04 - 06:59:23 -193
Summerland 06:54:14 -58.4 Dark Up 41.1 131.5 Up 06:49:04 - 06:59:23 -205
Penticton 06:54:14 -58.5 Dark Up 41.2 131.6 Up 06:49:04 - 06:59:23 -212
Victoria 06:54:26 -58.3 Dark Up 39.9 126.7 Up 06:49:17 - 06:59:36 -218
Oliver 06:54:15 -58.8 Dark Up 41.5 131.4 Up 06:49:05 - 06:59:24 -238
Sleaford 06:53:32 -57.5 Dark Up 44.7 149.7 Up 06:48:22 - 06:58:41 -251
Anarchist Mountain Observatory 06:54:15 -59.0 Dark Up 41.7 131.5 Up 06:49:05 - 06:59:24 -254
Tonasket 06:54:16 -59.3 Dark Up 41.8 131.2 Up 06:49:06 - 06:59:25 -276
Okanogan 06:54:17 -59.5 Dark Up 42.0 130.8 Up 06:49:07 - 06:59:26 -299
Brewster 06:54:18 -59.7 Dark Up 42.1 130.4 Up 06:49:09 - 06:59:28 -315
Manson/Chelan 06:54:20 -59.8 Dark Up 42.0 129.8 Up 06:49:10 - 06:59:29 -324
Wenatchee 06:54:21 -60.2 Dark Up 42.2 129.3 Up 06:49:12 - 06:59:31 -357
Ellensburg 06:54:23 -60.5 Dark Up 42.4 128.8 Up 06:49:13 - 06:59:32 -385
Yakima 06:54:24 -60.9 Dark Up 42.6 128.5 Up 06:49:15 - 06:59:34 -416
Toppenish/White Swan 06:54:24 -61.1 Dark Up 42.9 128.5 Up 06:49:15 - 06:59:34 -436
Goldendale 06:54:27 -61.5 Dark Up 43.0 127.7 Up 06:49:18 - 06:59:37 -470
The Dalles 06:54:29 -61.6 Dark Up 42.9 127.1 Up 06:49:19 - 06:59:38 -481
PNWRO 06:54:21 -61.9 Dark Up 43.9 129.9 Up 06:49:12 - 06:59:31 -493
Maupin 06:54:30 -62.0 Dark Up 43.2 126.9 Up 06:49:20 - 06:59:39 -516
Sisters 06:54:33 -62.6 Dark Up 43.5 125.7 Up 06:49:24 - 06:59:43 -576
Bend 06:54:33 -62.9 Dark Up 43.8 125.8 Up 06:49:24 - 06:59:43 -600
Oregon Observatory 06:54:34 -63.0 Dark Up 43.8 125.5 Up 06:49:24 - 06:59:43 -611
North Lake 06:54:34 -63.7 Dark Up 44.5 125.6 Up 06:49:24 - 06:59:43 -673
Chiloquin 06:54:34 -63.9 Dark Up 44.3 124.0 Up 06:49:24 - 06:59:43 -718
Klamath Falls 06:54:34 -64.3 Dark Up 44.5 123.8 Up 06:49:24 - 06:59:43 -750
Lakeview 06:54:34 -64.8 Dark Up 45.4 125.4 Up 06:49:24 - 06:59:43 -772
Cedarville 06:54:34 -65.5 Dark Up 45.9 125.0 Up 06:49:24 - 06:59:43 -832
Fall River/Burney 06:54:34 -65.4 Dark Up 45.4 123.3 Up 06:49:24 - 06:59:43 -863
Susanville 06:54:34 -66.2 Dark Up 46.2 123.5 Up 06:49:24 - 06:59:43 -928
Greenville 06:54:34 -66.3 Dark Up 46.2 123.0 Up 06:49:24 - 06:59:43 -952
Gimple 06:54:34 -66.4 Dark Up 46.2 123.1 Up 06:49:24 - 06:59:43 -952
Quincy 06:54:34 -66.5 Dark Up 46.3 122.8 Up 06:49:24 - 06:59:43 -971
Portola 06:54:34 -66.8 Dark Up 46.7 123.2 Up 06:49:24 - 06:59:43 -986
Reno 06:54:34 -67.3 Dark Up 47.2 123.7 Up 06:49:24 - 06:59:43 -1017
Carson City 06:54:34 -67.6 Dark Up 47.5 123.4 Up 06:49:24 - 06:59:43 -1051
Gardnerville 06:54:34 -67.9 Dark Up 47.6 123.2 Up 06:49:24 - 06:59:43 -1075
Yerington 06:54:34 -68.1 Dark Up 48.0 123.9 Up 06:49:24 - 06:59:43 -1076
Hawthorne 06:54:34 -68.7 Dark Up 48.6 124.1 Up 06:49:24 - 06:59:43 -1126
Lee Vining 06:54:34 -68.9 Dark Up 48.6 123.0 Up 06:49:24 - 06:59:43 -1174
Tonopah 06:54:34 -69.6 Dark Up 49.8 125.2 Up 06:49:24 - 06:59:43 -1190
Dunrhomin 06:53:52 -69.3 Dark Up 54.9 143.1 Up 06:48:43 - 06:59:02 -1239
Bishop 06:54:34 -69.8 Dark Up 49.4 123.2 Up 06:49:24 - 06:59:43 -1239
Beatty 06:54:34 -70.8 Dark Up 50.7 124.6 Up 06:49:24 - 06:59:43 -1305
Indian Springs 06:54:34 -71.5 Dark Up 51.6 125.5 Up 06:49:24 - 06:59:43 -1355
Henderson 06:54:34 -72.2 Dark Up 52.4 125.8 Up 06:49:24 - 06:59:43 -1418
Patrick 06:54:31 -73.1 Dark Up 53.5 126.5 Up 06:49:22 - 06:59:41 -1500
Laughlin/Bullhead City 06:54:34 -73.1 Dark Up 53.2 125.4 Up 06:49:24 - 06:59:43 -1507
Kingman/Dolan Springs 06:54:33 -73.3 Dark Up 53.5 126.0 Up 06:49:23 - 06:59:42 -1516
Mohave Valley 06:54:34 -73.4 Dark Up 53.3 125.1 Up 06:49:24 - 06:59:43 -1533
Wildwood 06:54:34 -72.4 Dark Up 50.9 119.6 Up 06:49:24 - 06:59:43 -1561
Lake Havasu City 06:54:34 -73.8 Dark Up 53.7 124.9 Up 06:49:24 - 06:59:43 -1575
Parker 06:54:34 -74.2 Dark Up 53.9 124.6 Up 06:49:24 - 06:59:43 -1609
Idyllwild 06:54:34 -73.6 Dark Up 52.5 121.3 Up 06:49:24 - 06:59:43 -1611
Calipatria 06:54:34 -74.6 Dark Up 53.6 122.0 Up 06:49:24 - 06:59:43 -1686
George/Scottsdale 06:54:28 -75.3 Dark Up 55.8 127.1 Up 06:49:18 - 06:59:37 -1701
Yuma 06:54:34 -75.3 Dark Up 54.5 122.5 Up 06:49:24 - 06:59:43 -1742

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 2022/02/02 01:22:07 UT

Marc W. Buie, Southwest Research Institute

RECON