RECON: TNO occultation with 24835

Event between (24835) 95SM55 and star GA1320:01827477 with event index number of 2529774

Geocentric closest approach at 2028/12/09 06:01:00 UTC

J2000 position of star is 04:22:51.2 +43:56:18
Equinox of date position of star is 04:24:25.4 +43:59:19
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 98 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 37.6 AU from the Sun and 36.7 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 199 seconds.
The 1-sigma cross-track error in the shadow position is 2991 km.
The sky-plane scale is 26605.4 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=701.5 km assuming a 5% albedo -- 28.0 sec chord
Diameter=286.4 km assuming a 30% albedo -- 11.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 24835, (2028/12/09 06:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.1 +16:33:55  0.8 27.57  98
Mirphak        03:26:24.3 +49:57:42  1.8 11.59 106
PPM 046963     04:20:08.9 +42:12:34  6.1  1.99  99
PPM 047025     04:24:39.9 +43:30:54  7.7  0.49  98
PPM 047019     04:23:49.5 +44:09:58  9.7  0.25  98
24835          04:24:54.3 +44:00:14 14.1        97
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 4.5 sigma about the mid-time.
The median site spacing is 30.8 km RECON observability=1.0 and success probability=18.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:01:43 -54.7 Dark Down 76.6 113.6 Up 05:46:43 - 06:16:43 1817
Kelowna 06:01:42 -55.6 Dark Down 77.5 112.0 Up 05:46:42 - 06:16:42 1711
Peachland 06:01:43 -55.6 Dark Down 77.3 111.0 Up 05:46:43 - 06:16:43 1707
Summerland 06:01:43 -55.7 Dark Down 77.4 110.5 Up 05:46:43 - 06:16:43 1689
Sleaford 06:01:04 -58.9 Dark Down 81.6 165.7 Up 05:46:04 - 06:16:04 1681
Victoria 06:01:55 -54.5 Dark Down 75.4 100.7 Up 05:46:55 - 06:16:55 1681
Penticton 06:01:43 -55.8 Dark Down 77.5 110.4 Up 05:46:43 - 06:16:43 1679
Oliver 06:01:43 -56.1 Dark Down 77.6 108.9 Up 05:46:43 - 06:16:43 1643
Anarchist Mountain Observatory 06:01:43 -56.3 Dark Down 77.8 108.5 Up 05:46:43 - 06:16:43 1620
Tonasket 06:01:44 -56.4 Dark Down 77.9 107.0 Up 05:46:44 - 06:16:44 1591
Okanogan 06:01:45 -56.6 Dark Down 77.9 105.3 Up 05:46:45 - 06:16:45 1560
Brewster 06:01:46 -56.6 Dark Down 77.8 103.8 Up 05:46:46 - 06:16:46 1537
Manson/Chelan 06:01:47 -56.6 Dark Down 77.6 102.3 Up 05:46:47 - 06:16:47 1525
Wenatchee 06:01:49 -56.8 Dark Down 77.6 100.0 Up 05:46:49 - 06:16:49 1481
Ellensburg 06:01:50 -56.9 Dark Down 77.5 97.9 Up 05:46:50 - 06:16:50 1444
Yakima 06:01:51 -57.2 Dark Down 77.6 96.0 Up 05:46:51 - 06:16:51 1403
Toppenish/White Swan 06:01:50 -57.4 Dark Down 77.7 95.2 Up 05:46:50 - 06:16:50 1376
Goldendale 06:01:52 -57.5 Dark Down 77.4 92.3 Up 05:46:52 - 06:16:52 1331
The Dalles 06:01:54 -57.4 Dark Down 77.2 91.0 Up 05:46:54 - 06:16:54 1318
PNWRO 06:01:47 -58.4 Dark Down 78.8 95.0 Up 05:46:47 - 06:16:47 1297
Maupin 06:01:54 -57.7 Dark Down 77.3 89.3 Up 05:46:54 - 06:16:54 1272
Sisters 06:01:57 -57.9 Dark Down 76.9 85.2 Up 05:46:57 - 06:16:57 1196
Bend 06:01:57 -58.2 Dark Down 77.1 84.2 Up 05:46:57 - 06:16:57 1164
Oregon Observatory 06:01:57 -58.2 Dark Down 76.9 83.4 Up 05:46:57 - 06:16:57 1150
North Lake 06:01:57 -58.9 Dark Down 77.2 80.8 Up 05:46:57 - 06:16:57 1067
Chiloquin 06:02:01 -58.6 Dark Down 76.4 77.9 Up 05:47:01 - 06:17:01 1027
Klamath Falls 06:02:01 -58.8 Dark Down 76.4 76.5 Up 05:47:01 - 06:17:01 989
Lakeview 06:01:57 -59.8 Dark Down 77.4 76.2 Up 05:46:57 - 06:16:57 941
Cedarville 06:01:57 -60.2 Dark Down 77.4 73.3 Up 05:46:57 - 06:16:57 868
Fall River/Burney 06:02:02 -59.6 Dark Down 76.4 71.7 Up 05:47:02 - 06:17:02 855
Susanville 06:02:01 -60.4 Dark Down 76.7 68.9 Up 05:47:01 - 06:17:01 767
Greenville 06:02:02 -60.4 Dark Down 76.4 68.0 Up 05:47:02 - 06:17:02 748
Gimple 06:02:02 -60.4 Dark Down 76.4 68.0 Up 05:47:02 - 06:17:02 745
Quincy 06:02:02 -60.5 Dark Down 76.3 67.2 Up 05:47:02 - 06:17:02 727
Portola 06:02:01 -60.8 Dark Down 76.6 66.5 Up 05:47:01 - 06:17:01 699
Reno 06:01:59 -61.4 Dark Down 76.9 65.0 Up 05:46:59 - 06:16:59 651
Carson City 06:02:00 -61.6 Dark Down 76.8 63.6 Up 05:47:00 - 06:17:00 613
Gardnerville 06:02:00 -61.7 Dark Down 76.7 62.6 Up 05:47:00 - 06:17:00 587
Yerington 06:01:58 -62.1 Dark Down 77.1 62.3 Up 05:46:58 - 06:16:58 574
Hawthorne 06:01:57 -62.7 Dark Down 77.3 59.9 Up 05:46:57 - 06:16:57 510
Lee Vining 06:01:59 -62.6 Dark Down 76.7 58.4 Up 05:46:59 - 06:16:59 466
Tonopah 06:01:53 -63.9 Dark Down 78.0 56.3 Up 05:46:53 - 06:16:53 420
Dunrhomin 06:01:12 -69.4 Dark Down 86.0 21.9 Up 05:46:12 - 06:16:12 384
Bishop 06:01:58 -63.4 Dark Down 76.8 55.4 Up 05:46:58 - 06:16:58 381
CU-SBO 06:01:12 -69.6 Dark Down 85.7 21.6 Up 05:46:12 - 06:16:12 358
Beatty 06:01:53 -64.7 Dark Down 77.6 51.3 Up 05:46:53 - 06:16:53 285
Indian Springs 06:01:50 -65.6 Dark Down 78.0 48.3 Up 05:46:50 - 06:16:50 221
Henderson 06:01:49 -66.4 Dark Down 78.1 45.0 Up 05:46:49 - 06:16:49 145
Patrick 06:01:45 -67.5 Dark Down 78.2 40.5 Up 05:46:45 - 06:16:45 49
Wildwood 06:02:03 -64.5 Dark Down 74.6 45.7 Up 05:47:03 - 06:17:03 48
Laughlin/Bullhead City 06:01:48 -67.1 Dark Down 77.6 41.4 Up 05:46:48 - 06:16:48 43
Kingman/Dolan Springs 06:01:46 -67.4 Dark Down 77.9 40.3 Up 05:46:46 - 06:16:46 31
Mohave Valley 06:01:48 -67.2 Dark Down 77.4 40.6 Up 05:46:48 - 06:16:48 14
Lake Havasu City 06:01:48 -67.6 Dark Down 77.3 38.9 Up 05:46:48 - 06:16:48 -35
Idyllwild 06:01:57 -66.1 Dark Down 75.4 41.6 Up 05:46:57 - 06:16:57 -47
Parker 06:01:48 -67.7 Dark Down 77.0 37.8 Up 05:46:48 - 06:16:48 -73
Calipatria 06:01:54 -67.2 Dark Down 75.6 37.9 Up 05:46:54 - 06:16:54 -145
George/Scottsdale 06:01:41 -69.7 Dark Down 77.8 30.7 Up 05:46:41 - 06:16:41 -181
Yuma 06:01:51 -68.0 Dark Down 75.7 35.0 Up 05:46:51 - 06:16:51 -216

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 24835, (2028/12/09 06:01UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 27.57  98
Mirphak        03:24:19.4 +49:51:40  1.8 11.59 106
PPM 046963     04:18:08.2 +42:08:27  6.1  1.99  99
PPM 047025     04:22:37.4 +43:26:57  7.7  0.49  98
PPM 047019     04:21:46.4 +44:05:59  9.7  0.25  98
24835          04:22:51.2 +43:56:18 14.1        98
Positions are for J2000

Event circumstances last updated at 2022/02/22 00:56:16 UT

Marc W. Buie, Southwest Research Institute

RECON