RECON: TNO occultation with 523620

Event between (523620) 07RH283 and star GA1240:01585091 with event index number of 1323139

Geocentric closest approach at 2023/11/05 08:03:13 UTC

J2000 position of star is 05:07:42.3 +34:07:05
Equinox of date position of star is 05:09:01.6 +34:08:35
Stellar brightness G=14.2, use SENSEUP=64
Star is 53 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 21.3 AU from the Sun and 20.5 AU from the Earth.
The TNO is moving 19.4 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 116 seconds.
The 1-sigma cross-track error in the shadow position is 912 km.
The sky-plane scale is 14904.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.7
Diameter=109.7 km assuming a 5% albedo -- 5.6 sec chord
Diameter=44.8 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523620, (2023/11/05 08:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.5 +16:33:20  0.8 19.00  63
3Iot Aur       04:58:33.0 +33:12:06  2.7  2.42  55
14 Aur         05:16:57.7 +32:42:46  5.2  2.15  52
PPM 069915     05:07:42.6 +33:56:56  7.2  0.38  53
PPM 069968     05:10:29.2 +34:08:25  9.8  0.25  53
523620         05:09:16.6 +34:08:52 14.2        53
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 25.2 km RECON observability=1.0 and success probability=41.6%
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 08:05:01 -55.0 Dark Up 62.4 114.1 Up 07:54:50 - 08:15:12 -86
Kelowna 08:05:03 -55.4 Dark Up 62.5 113.2 Up 07:54:52 - 08:15:14 -121
Summerland 08:05:04 -55.7 Dark Up 62.5 112.5 Up 07:54:53 - 08:15:15 -144
Penticton 08:05:04 -55.8 Dark Up 62.6 112.5 Up 07:54:53 - 08:15:15 -153
Victoria 08:05:18 -57.1 Dark Up 60.6 106.4 Up 07:55:07 - 08:15:29 -168
Oliver 08:05:05 -56.1 Dark Up 62.7 111.9 Up 07:54:54 - 08:15:16 -188
Anarchist Mountain Observatory 08:05:04 -56.3 Dark Up 62.9 111.8 Up 07:54:53 - 08:15:15 -210
Tonasket 08:05:05 -56.6 Dark Up 63.0 111.2 Up 07:54:54 - 08:15:16 -239
Okanogan 08:05:06 -56.9 Dark Up 63.0 110.4 Up 07:54:55 - 08:15:17 -270
Brewster 08:05:08 -57.2 Dark Up 63.0 109.6 Up 07:54:57 - 08:15:19 -293
Manson/Chelan 08:05:09 -57.5 Dark Up 62.8 108.8 Up 07:54:58 - 08:15:20 -306
Entiat 08:05:10 -57.7 Dark Up 62.8 108.4 Up 07:54:59 - 08:15:21 -327
Wenatchee 08:05:11 -57.9 Dark Up 62.9 107.8 Up 07:55:00 - 08:15:22 -351
Ellensburg 08:05:13 -58.4 Dark Up 62.8 106.8 Up 07:55:02 - 08:15:24 -388
Yakima 08:05:13 -58.8 Dark Up 62.9 106.0 Up 07:55:02 - 08:15:24 -429
Toppenish/White Swan 08:05:13 -59.0 Dark Up 63.1 105.8 Up 07:55:02 - 08:15:24 -454
Pasco 08:05:09 -58.9 Dark Up 64.0 106.9 Up 07:54:58 - 08:15:20 -495
Goldendale 08:05:16 -59.6 Dark Up 63.0 104.3 Up 07:55:05 - 08:15:27 -501
The Dalles 08:05:18 -59.8 Dark Up 62.8 103.5 Up 07:55:07 - 08:15:29 -515
PNWRO 08:05:09 -59.1 Dark Up 64.2 106.7 Up 07:54:58 - 08:15:20 -526
Maupin 08:05:18 -60.2 Dark Up 63.0 102.8 Up 07:55:07 - 08:15:29 -561
Sisters 08:05:22 -61.1 Dark Up 62.8 100.6 Up 07:55:11 - 08:15:33 -639
Redmond 08:05:21 -61.1 Dark Up 63.1 101.0 Up 07:55:10 - 08:15:32 -651
Bend 08:05:21 -61.4 Dark Up 63.0 100.4 Up 07:55:10 - 08:15:32 -670
Oregon Observatory 08:05:22 -61.5 Dark Up 63.0 100.0 Up 07:55:11 - 08:15:33 -684
La Pine/Gilchrist 08:05:23 -61.7 Dark Up 63.0 99.5 Up 07:55:12 - 08:15:34 -704
North Lake 08:05:22 -62.1 Dark Up 63.5 99.2 Up 07:55:11 - 08:15:33 -763
Paisley 08:05:22 -62.6 Dark Up 63.8 98.4 Up 07:55:11 - 08:15:33 -829
Klamath Falls 08:05:27 -63.2 Dark Up 63.0 96.5 Up 07:55:16 - 08:15:38 -847
Lakeview 08:05:22 -63.1 Dark Up 64.0 97.6 Up 07:55:11 - 08:15:33 -886
Cedarville 08:05:23 -63.7 Dark Up 64.2 96.4 Up 07:55:12 - 08:15:34 -959
Fall River/Burney 08:05:28 -64.3 Dark Up 63.4 94.4 Up 07:55:17 - 08:15:39 -979
Susanville 08:05:26 -64.9 Dark Up 64.0 93.7 Up 07:55:15 - 08:15:37 -1063
Greenville 08:05:28 -65.2 Dark Up 63.8 93.0 Up 07:55:17 - 08:15:39 -1084
Gimple 08:05:28 -65.2 Dark Up 63.8 93.0 Up 07:55:17 - 08:15:39 -1087
Quincy 08:05:29 -65.4 Dark Up 63.8 92.5 Up 07:55:18 - 08:15:40 -1106
Portola 08:05:27 -65.4 Dark Up 64.2 92.6 Up 07:55:16 - 08:15:38 -1131
Reno 08:05:25 -65.6 Dark Up 64.7 92.5 Up 07:55:14 - 08:15:36 -1175
Carson City 08:05:26 -65.9 Dark Up 64.7 91.8 Up 07:55:15 - 08:15:37 -1213
Gardnerville 08:05:26 -66.2 Dark Up 64.7 91.3 Up 07:55:15 - 08:15:37 -1240
Yerington 08:05:24 -66.0 Dark Up 65.2 91.8 Up 07:55:13 - 08:15:35 -1249
Hawthorne 08:05:22 -66.3 Dark Up 65.6 91.1 Up 07:55:11 - 08:15:33 -1311
Lee Vining 08:05:25 -67.0 Dark Up 65.2 89.6 Up 07:55:14 - 08:15:36 -1359
Tonopah 08:05:18 -66.4 Dark Up 66.7 91.0 Up 07:55:07 - 08:15:29 -1395
Niwot 08:04:27 -59.9 Dark Up 75.4 109.0 Up 07:54:16 - 08:14:38 -1400
SwRI 08:04:27 -60.1 Dark Up 75.4 108.5 Up 07:54:16 - 08:14:38 -1410
Bishop 08:05:24 -67.4 Dark Up 65.8 88.7 Up 07:55:13 - 08:15:35 -1440
Beatty 08:05:18 -67.4 Dark Up 67.1 88.5 Up 07:55:07 - 08:15:29 -1529
Indian Springs 08:05:14 -67.3 Dark Up 67.9 88.3 Up 07:55:03 - 08:15:25 -1588
CPSLO 08:05:36 -69.9 Dark Up 63.9 83.3 Up 07:55:25 - 08:15:47 -1599
Henderson 08:05:12 -67.6 Dark Up 68.5 87.4 Up 07:55:01 - 08:15:23 -1661
Searchlight/Boulder City 08:05:12 -68.1 Dark Up 68.5 85.9 Up 07:55:01 - 08:15:23 -1724
Patrick 08:05:08 -67.7 Dark Up 69.3 86.3 Up 07:54:57 - 08:15:19 -1753
Laughlin/Bullhead City 08:05:12 -68.2 Dark Up 68.7 85.3 Up 07:55:01 - 08:15:23 -1764
Kingman/Dolan Springs 08:05:09 -68.0 Dark Up 69.1 85.6 Up 07:54:58 - 08:15:20 -1773
Wildwood 08:05:29 -70.5 Dark Up 65.4 81.4 Up 07:55:18 - 08:15:40 -1782
Mohave Valley 08:05:12 -68.4 Dark Up 68.7 84.6 Up 07:55:01 - 08:15:23 -1793
DCO 08:05:06 -67.7 Dark Up 69.9 85.7 Up 07:54:55 - 08:15:17 -1802
Lake Havasu City 08:05:11 -68.7 Dark Up 68.9 83.7 Up 07:55:00 - 08:15:22 -1842
Idyllwild 08:05:23 -70.3 Dark Up 66.8 81.2 Up 07:55:12 - 08:15:34 -1868
Parker 08:05:12 -69.0 Dark Up 68.9 82.8 Up 07:55:01 - 08:15:23 -1881
Blythe 08:05:14 -69.5 Dark Up 68.5 81.4 Up 07:55:03 - 08:15:25 -1930
Calipatria 08:05:18 -70.3 Dark Up 67.7 80.0 Up 07:55:07 - 08:15:29 -1961
George/Scottsdale 08:05:02 -68.2 Dark Up 70.8 82.3 Up 07:54:51 - 08:15:13 -1979
Yuma 08:05:15 -70.3 Dark Up 68.4 79.1 Up 07:55:04 - 08:15:26 -2029

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 523620, (2023/11/05 08:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.00  63
3Iot Aur       04:56:59.6 +33:09:58  2.7  2.42  55
14 Aur         05:15:24.3 +32:41:15  5.2  2.15  52
PPM 069915     05:06:08.4 +33:55:07  7.2  0.38  53
PPM 069968     05:08:54.8 +34:06:40  9.8  0.25  53
523620         05:07:42.3 +34:07:05 14.2        53
Positions are for J2000

Event circumstances last updated at 2020/01/15 20:54:47 UT

Marc W. Buie, Southwest Research Institute

RECON