RECON: TNO occultation with 523700

Event between (523700) 14GM54 and star GA1080:15409833 with event index number of 2089150

Geocentric closest approach at 2023/07/10 08:08:41 UTC

J2000 position of star is 20:04:34.2 +18:28:48
Equinox of date position of star is 20:05:35.5 +18:32:44
Stellar brightness G=12.9, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 28.1 AU from the Sun and 27.3 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 78 seconds.
The 1-sigma cross-track error in the shadow position is 1334 km.
The sky-plane scale is 19829.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=229.1 km assuming a 5% albedo -- 9.7 sec chord
Diameter=93.5 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523700, (2023/07/10 08:09UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:44.1 +38:48:24  0.0 27.81  94
Tarazed        19:47:22.7 +10:40:20  2.7  9.03  82
16Eta Sge      20:06:12.1 +20:03:35  5.1  1.52  77
PPM 137514     20:04:19.6 +18:34:06  7.6  0.31  77
PPM 137526     20:04:39.4 +18:24:34  9.2  0.27  77
523700         20:05:37.6 +18:32:52 12.9        77
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 27.4 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:08:51 -17.1 AT Up 56.6 160.3 Up 08:01:52 - 08:15:49 6799
Sleaford 08:08:07 -14.6 AT Up 56.3 185.1 Up 08:01:09 - 08:15:06 6732
Kelowna 08:08:49 -17.9 AT Up 57.5 161.4 Up 08:01:50 - 08:15:47 6711
Peachland 08:08:50 -18.0 AT Up 57.6 160.8 Up 08:01:52 - 08:15:49 6706
Summerland 08:08:50 -18.1 Dark Up 57.7 160.9 Up 08:01:52 - 08:15:49 6691
Penticton 08:08:50 -18.2 Dark Up 57.8 161.1 Up 08:01:51 - 08:15:48 6683
Victoria 08:09:03 -19.2 Dark Up 57.8 153.9 Up 08:02:04 - 08:16:01 6657
Oliver 08:08:51 -18.6 Dark Up 58.2 160.9 Up 08:01:52 - 08:15:49 6651
Anarchist Mountain Observatory 08:08:50 -18.7 Dark Up 58.4 161.1 Up 08:01:52 - 08:15:49 6632
Tonasket 08:08:51 -19.0 Dark Up 58.6 160.9 Up 08:01:52 - 08:15:49 6605
Okanogan 08:08:51 -19.4 Dark Up 58.9 160.4 Up 08:01:53 - 08:15:50 6576
Brewster 08:08:54 -19.7 Dark Up 59.1 159.9 Up 08:01:55 - 08:15:52 6555
Manson/Chelan 08:08:54 -19.9 Dark Up 59.2 159.1 Up 08:01:56 - 08:15:53 6542
Wenatchee 08:08:55 -20.3 Dark Up 59.6 158.5 Up 08:01:57 - 08:15:54 6501
Ellensburg 08:08:57 -20.8 Dark Up 60.0 157.9 Up 08:01:58 - 08:15:55 6466
Yakima 08:08:57 -21.2 Dark Up 60.3 157.6 Up 08:01:59 - 08:15:56 6429
Toppenish/White Swan 08:08:57 -21.4 Dark Up 60.6 157.8 Up 08:01:58 - 08:15:55 6405
Goldendale 08:08:59 -21.9 Dark Up 61.0 156.6 Up 08:02:01 - 08:15:58 6361
The Dalles 08:09:01 -22.2 Dark Up 61.1 155.8 Up 08:02:02 - 08:15:59 6347
PNWRO 08:08:53 -21.7 Dark Up 61.3 160.3 Up 08:01:54 - 08:15:51 6345
Maupin 08:09:01 -22.6 Dark Up 61.5 155.6 Up 08:02:02 - 08:15:59 6305
Sisters 08:09:04 -23.5 Dark Up 62.2 154.0 Up 08:02:05 - 08:16:02 6231
Bend 08:09:03 -23.7 Dark Up 62.5 154.3 Up 08:02:05 - 08:16:02 6204
Oregon Observatory 08:09:04 -23.9 Dark Up 62.6 153.9 Up 08:02:05 - 08:16:02 6190
North Lake 08:09:03 -24.5 Dark Up 63.3 154.5 Up 08:02:04 - 08:16:01 6118
Chiloquin 08:09:07 -25.2 Dark Up 63.6 152.0 Up 08:02:09 - 08:16:06 6071
Klamath Falls 08:09:07 -25.5 Dark Up 63.9 151.8 Up 08:02:09 - 08:16:06 6036
Lakeview 08:09:03 -25.6 Dark Up 64.4 154.6 Up 08:02:04 - 08:16:01 6005
Cedarville 08:09:03 -26.2 Dark Up 65.1 154.4 Up 08:02:04 - 08:16:01 5938
Fall River/Burney 08:09:08 -26.7 Dark Up 65.1 151.4 Up 08:02:09 - 08:16:06 5914
Susanville 08:09:06 -27.3 Dark Up 65.9 152.3 Up 08:02:08 - 08:16:05 5837
Greenville 08:09:07 -27.6 Dark Up 66.1 151.4 Up 08:02:09 - 08:16:06 5816
Gimple 08:09:07 -27.6 Dark Up 66.1 151.6 Up 08:02:09 - 08:16:06 5814
Quincy 08:09:07 -27.8 Dark Up 66.2 151.2 Up 08:02:09 - 08:16:06 5796
Portola 08:09:06 -27.9 Dark Up 66.5 152.1 Up 08:02:08 - 08:16:05 5774
Reno 08:09:04 -28.2 Dark Up 67.0 153.2 Up 08:02:06 - 08:16:03 5735
Carson City 08:09:05 -28.6 Dark Up 67.3 152.9 Up 08:02:06 - 08:16:03 5699
Gardnerville 08:09:05 -28.8 Dark Up 67.6 152.7 Up 08:02:06 - 08:16:03 5673
Yerington 08:09:03 -28.7 Dark Up 67.7 154.1 Up 08:02:04 - 08:16:01 5667
Hawthorne 08:09:01 -29.2 Dark Up 68.3 154.9 Up 08:02:03 - 08:16:00 5610
Dunrhomin 08:08:12 -25.8 Dark Up 68.0 189.5 Up 08:01:13 - 08:15:10 5569
Lee Vining 08:09:03 -29.8 Dark Up 68.7 153.1 Up 08:02:05 - 08:16:02 5563
CU-SBO 08:08:11 -26.1 Dark Up 68.2 189.4 Up 08:01:13 - 08:15:10 5545
Tonopah 08:08:57 -29.6 Dark Up 69.2 157.9 Up 08:01:59 - 08:15:56 5536
Bishop 08:09:02 -30.3 Dark Up 69.4 154.2 Up 08:02:03 - 08:16:00 5488
Beatty 08:08:56 -30.7 Dark Up 70.4 157.9 Up 08:01:58 - 08:15:55 5410
Indian Springs 08:08:53 -31.0 Dark Up 71.0 160.4 Up 08:01:55 - 08:15:52 5356
Henderson 08:08:51 -31.4 Dark Up 71.7 161.9 Up 08:01:52 - 08:15:49 5288
Patrick 08:08:47 -32.0 Dark Up 72.5 164.6 Up 08:01:49 - 08:15:46 5203
Laughlin/Bullhead City 08:08:50 -32.3 Dark Up 72.6 162.3 Up 08:01:52 - 08:15:49 5191
Kingman/Dolan Springs 08:08:48 -32.2 Dark Up 72.7 163.9 Up 08:01:49 - 08:15:46 5184
Mohave Valley 08:08:51 -32.5 Dark Up 72.9 162.0 Up 08:01:52 - 08:15:49 5162
Wildwood 08:09:08 -33.6 Dark Up 72.3 149.2 Up 08:02:09 - 08:16:06 5157
Lake Havasu City 08:08:50 -32.9 Dark Up 73.3 162.4 Up 08:01:51 - 08:15:48 5116
Idyllwild 08:09:00 -33.9 Dark Up 73.3 154.1 Up 08:02:02 - 08:15:59 5083
Parker 08:08:51 -33.3 Dark Up 73.7 162.1 Up 08:01:52 - 08:15:49 5079
Calipatria 08:08:56 -34.4 Dark Up 74.3 156.9 Up 08:01:58 - 08:15:55 4996
George/Scottsdale 08:08:41 -33.4 Dark Up 74.6 169.9 Up 08:01:42 - 08:15:39 4991
Yuma 08:08:53 -34.7 Dark Up 74.9 159.3 Up 08:01:54 - 08:15:51 4934

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 523700, (2023/07/10 08:09UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 27.81  94
Tarazed        19:46:15.6 +10:36:48  2.7  9.03  82
16Eta Sge      20:05:09.5 +19:59:29  5.1  1.52  77
PPM 137514     20:03:16.4 +18:30:03  7.6  0.31  77
PPM 137526     20:03:36.0 +18:20:31  9.2  0.27  77
523700         20:04:34.2 +18:28:48 12.9        77
Positions are for J2000

Event circumstances last updated at 2022/10/05 04:15:22 UT

Marc W. Buie, Southwest Research Institute

RECON