RECON: TNO occultation with 09KN30

Event between 09KN30 and star GA0660:35312179 with event index number of 2073957

Geocentric closest approach at 2023/07/16 06:27:45 UTC

J2000 position of star is 18:50:04.6 -23:11:01
Equinox of date position of star is 18:51:29.3 -23:09:18
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 174 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=23.2

[RECON map]
Object is 35.1 AU from the Sun and 34.1 AU from the Earth.
Apparent velocity is 22.8 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 551 seconds.
The 1-sigma cross-track error in the shadow position is 2662 km.
The sky-plane scale is 24742.5 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=164.4 km assuming a 5% albedo -- 7.2 sec chord
Diameter=67.1 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 

Star training set for 09KN30, (2023/07/16 06:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.3 -26:28:56  0.9 31.99 153
Nunki          18:56:43.4 -26:15:55  2.0  3.33 174
30 Sgr         18:52:15.3 -22:07:59  6.3  1.04 173
PPM 268954     18:51:37.3 -22:49:10  7.5  0.34 173
PPM 268949     18:51:15.0 -23:20:02  9.4  0.19 174
09KN30         18:51:30.1 -23:09:17 16.7       173
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 1.6 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=0.7 and success probability=7.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:27:22 -15.9 AT Down 14.7 182.1 Really Low 06:12:22 - 06:42:22 -938
Kamloops 06:28:05 -14.7 AT Down 15.4 168.6 Really Low 06:13:05 - 06:43:05 -949
Kelowna 06:28:03 -15.6 AT Down 16.3 169.3 Really Low 06:13:03 - 06:43:03 -973
Peachland 06:28:04 -15.7 AT Down 16.4 169.1 Really Low 06:13:04 - 06:43:04 -977
Summerland 06:28:04 -15.8 AT Down 16.5 169.1 Really Low 06:13:04 - 06:43:04 -982
Penticton 06:28:04 -15.9 AT Down 16.6 169.2 Really Low 06:13:04 - 06:43:04 -984
Oliver 06:28:04 -16.2 AT Down 16.9 169.2 Really Low 06:13:04 - 06:43:04 -996
Anarchist Mountain Observatory 06:28:04 -16.5 AT Down 17.1 169.4 Really Low 06:13:04 - 06:43:04 -1000
Okanogan 06:28:05 -17.0 AT Down 17.7 169.2 Really Low 06:13:05 - 06:43:05 -1023
Victoria 06:28:17 -15.8 AT Down 17.0 165.6 Really Low 06:13:17 - 06:43:17 -1025
Brewster 06:28:06 -17.2 AT Down 18.0 168.9 Really Low 06:13:06 - 06:43:06 -1033
Manson/Chelan 06:28:07 -17.3 AT Down 18.1 168.6 Really Low 06:13:07 - 06:43:07 -1041
Wenatchee 06:28:08 -17.7 AT Down 18.6 168.4 Really Low 06:13:08 - 06:43:08 -1058
Ellensburg 06:28:09 -18.0 AT Down 19.0 168.2 Really Low 06:13:09 - 06:43:09 -1074
Yakima 06:28:10 -18.3 Dark Down 19.4 168.1 Really Low 06:13:10 - 06:43:10 -1089
Toppenish/White Swan 06:28:09 -18.6 Dark Down 19.6 168.3 Really Low 06:13:09 - 06:43:09 -1097
PNWRO 06:28:04 -19.3 Dark Down 20.2 169.7 Low 06:13:04 - 06:43:04 -1110
The Dalles 06:28:12 -19.1 Dark Down 20.2 167.5 Low 06:13:12 - 06:43:12 -1129
Maupin 06:28:13 -19.5 Dark Down 20.7 167.5 Low 06:13:13 - 06:43:13 -1145
Sisters 06:28:15 -20.1 Dark Down 21.4 167.0 Low 06:13:15 - 06:43:15 -1182
Bend 06:28:14 -20.4 Dark Down 21.7 167.2 Low 06:13:14 - 06:43:14 -1192
Oregon Observatory 06:28:15 -20.5 Dark Down 21.9 167.1 Low 06:13:15 - 06:43:15 -1199
Chiloquin 06:28:18 -21.6 Dark Down 23.1 166.5 Low 06:13:18 - 06:43:18 -1258
Klamath Falls 06:28:18 -21.9 Dark Down 23.4 166.6 Low 06:13:18 - 06:43:18 -1273
Cedarville 06:28:13 -23.1 Dark Down 24.4 168.1 Low 06:13:13 - 06:43:13 -1303
Fall River/Burney 06:28:17 -23.1 Dark Down 24.6 166.8 Low 06:13:17 - 06:43:17 -1328
Gimple 06:28:16 -24.1 Dark Down 25.6 167.3 Low 06:13:16 - 06:43:16 -1371
Greenville 06:28:16 -24.1 Dark Down 25.6 167.2 Low 06:13:16 - 06:43:16 -1371
Quincy 06:28:17 -24.3 Dark Down 25.8 167.2 Low 06:13:17 - 06:43:17 -1381
Portola 06:28:15 -24.5 Dark Down 26.0 167.6 Low 06:13:15 - 06:43:15 -1386
Reno 06:28:13 -25.0 Dark Down 26.4 168.3 Low 06:13:13 - 06:43:13 -1399
Dunrhomin 06:27:18 -27.7 Dark Down 26.5 183.1 Low 06:12:18 - 06:42:18 -1407
Nikitin 06:27:19 -27.9 Dark Down 26.7 183.1 Low 06:12:19 - 06:42:19 -1416
Carson City 06:28:13 -25.3 Dark Down 26.7 168.2 Low 06:13:13 - 06:43:13 -1417
CU-SBO 06:27:19 -27.9 Dark Down 26.8 183.0 Low 06:12:19 - 06:42:19 -1418
Yerington 06:28:11 -25.7 Dark Down 27.0 168.9 Low 06:13:11 - 06:43:11 -1426
Gardnerville 06:28:13 -25.5 Dark Down 27.0 168.3 Low 06:13:13 - 06:43:13 -1429
Hawthorne 06:28:09 -26.3 Dark Down 27.5 169.4 Low 06:13:09 - 06:43:09 -1450
Lee Vining 06:28:12 -26.6 Dark Down 28.0 168.8 Low 06:13:12 - 06:43:12 -1479
Bishop 06:28:09 -27.4 Dark Down 28.7 169.5 Low 06:13:09 - 06:43:09 -1512
Beatty 06:28:03 -28.4 Dark Down 29.4 171.1 Low 06:13:03 - 06:43:03 -1537
Patrick 06:27:53 -30.6 Dark Down 31.2 174.0 Up 06:12:53 - 06:42:53 -1625
Laughlin/Bullhead City 06:27:55 -30.6 Dark Down 31.3 173.3 Up 06:12:55 - 06:42:55 -1638
Lake Havasu City 06:27:55 -31.3 Dark Down 32.0 173.5 Up 06:12:55 - 06:42:55 -1678
Wildwood 06:28:12 -30.3 Dark Down 31.9 168.9 Up 06:13:12 - 06:43:12 -1698
Idyllwild 06:28:05 -31.3 Dark Down 32.5 170.9 Up 06:13:05 - 06:43:05 -1719
George/Scottsdale 06:27:46 -32.7 Dark Down 33.0 176.1 Up 06:12:46 - 06:42:46 -1731
Calipatria 06:28:01 -32.2 Dark Down 33.3 172.1 Up 06:13:01 - 06:43:01 -1758
Yuma 06:27:57 -32.9 Dark Down 33.8 173.0 Up 06:12:57 - 06:42:57 -1786

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 09KN30, (2023/07/16 06:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.99 153
Nunki          18:55:15.9 -26:17:49  2.0  3.33 174
30 Sgr         18:50:50.5 -22:09:45  6.3  1.04 173
PPM 268954     18:50:12.0 -22:50:54  7.5  0.34 173
PPM 268949     18:49:49.4 -23:21:45  9.4  0.19 174
09KN30         18:50:04.6 -23:11:01 16.7       174
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:30:06 UT

Marc W. Buie, Southwest Research Institute

RECON