RECON: TNO occultation with 09KN30

Event between 09KN30 and star GA0660:35174001 with event index number of 2073972

Geocentric closest approach at 2023/07/30 08:01:10 UTC

J2000 position of star is 18:48:47.1 -23:12:07
Equinox of date position of star is 18:50:12.7 -23:10:26
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 10 degrees from the moon. Moon is 91% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 35.1 AU from the Sun and 34.2 AU from the Earth.
Apparent velocity is 20.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 604 seconds.
The 1-sigma cross-track error in the shadow position is 2761 km.
The sky-plane scale is 24808.8 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=164.4 km assuming a 5% albedo -- 8.0 sec chord
Diameter=67.1 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 

Star training set for 09KN30, (2023/07/30 08:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.4 -26:28:56  0.9 31.70  23
Nunki          18:56:43.5 -26:15:55  2.0  3.43  10
28 Sgr         18:47:45.9 -22:21:56  4.9  0.99  10
PPM 268954     18:51:37.5 -22:49:10  7.5  0.48  10
PPM 268931     18:50:03.2 -23:11:13  9.1  0.04  10
09KN30         18:50:12.8 -23:10:26 16.3        10
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 1.5 sigma about the mid-time.
The median site spacing is 20.3 km RECON observability=0.5 and success probability=7.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:59:29 -20.8 Dark Up 12.9 203.5 Really Low 07:44:29 - 08:14:29 -1131
Victoria 07:59:36 -22.8 Dark Up 15.6 200.9 Really Low 07:44:36 - 08:14:36 -1166
Peachland 07:59:26 -21.7 Dark Up 13.6 204.1 Really Low 07:44:26 - 08:14:26 -1174
Kelowna 07:59:25 -21.6 Dark Up 13.4 204.4 Really Low 07:44:25 - 08:14:25 -1175
Summerland 07:59:25 -21.8 Dark Up 13.7 204.2 Really Low 07:44:25 - 08:14:25 -1181
Penticton 07:59:25 -21.9 Dark Up 13.7 204.3 Really Low 07:44:25 - 08:14:25 -1186
Oliver 07:59:24 -22.3 Dark Up 14.0 204.4 Really Low 07:44:24 - 08:14:24 -1200
Anarchist Mountain Observatory 07:59:23 -22.4 Dark Up 14.2 204.5 Really Low 07:44:23 - 08:14:23 -1209
Okanogan 07:59:23 -23.1 Dark Up 14.8 204.4 Really Low 07:44:23 - 08:14:23 -1232
Brewster 07:59:23 -23.4 Dark Up 15.1 204.3 Really Low 07:44:23 - 08:14:23 -1239
Manson/Chelan 07:59:24 -23.6 Dark Up 15.4 204.0 Really Low 07:44:24 - 08:14:24 -1242
Wenatchee 07:59:24 -24.0 Dark Up 15.9 203.8 Really Low 07:44:24 - 08:14:24 -1259
Ellensburg 07:59:24 -24.4 Dark Up 16.3 203.7 Really Low 07:44:24 - 08:14:24 -1272
Yakima 07:59:24 -24.8 Dark Up 16.7 203.7 Really Low 07:44:24 - 08:14:24 -1290
Toppenish/White Swan 07:59:23 -25.1 Dark Up 16.8 203.9 Really Low 07:44:23 - 08:14:23 -1302
The Dalles 07:59:24 -25.8 Dark Up 17.8 203.3 Really Low 07:44:24 - 08:14:24 -1323
Sleaford 07:58:52 -18.6 Dark Down 7.3 215.9 Really Low 07:43:52 - 08:13:52 -1334
PNWRO 07:59:17 -25.5 Dark Up 16.8 205.3 Really Low 07:44:17 - 08:14:17 -1343
Maupin 07:59:23 -26.2 Dark Up 18.1 203.4 Really Low 07:44:23 - 08:14:23 -1344
Sisters 07:59:24 -27.1 Dark Up 19.1 203.1 Really Low 07:44:24 - 08:14:24 -1375
Bend 07:59:22 -27.3 Dark Up 19.2 203.4 Really Low 07:44:22 - 08:14:22 -1391
Oregon Observatory 07:59:23 -27.5 Dark Up 19.4 203.3 Really Low 07:44:23 - 08:14:23 -1397
Chiloquin 07:59:22 -28.8 Dark Up 20.8 203.1 Low 07:44:22 - 08:14:22 -1454
Klamath Falls 07:59:22 -29.1 Dark Up 21.0 203.2 Low 07:44:22 - 08:14:22 -1472
Cedarville 07:59:15 -29.9 Dark Up 21.2 204.8 Low 07:44:15 - 08:14:15 -1536
Fall River/Burney 07:59:19 -30.3 Dark Up 22.0 203.7 Low 07:44:19 - 08:14:19 -1539
Greenville 07:59:16 -31.3 Dark Up 22.7 204.3 Low 07:44:16 - 08:14:16 -1596
Gimple 07:59:16 -31.3 Dark Up 22.7 204.4 Low 07:44:16 - 08:14:16 -1597
Quincy 07:59:16 -31.5 Dark Up 22.9 204.3 Low 07:44:16 - 08:14:16 -1607
Portola 07:59:14 -31.6 Dark Up 22.9 204.8 Low 07:44:14 - 08:14:14 -1622
Reno 07:59:11 -31.9 Dark Up 22.9 205.4 Low 07:44:11 - 08:14:11 -1649
Carson City 07:59:11 -32.3 Dark Up 23.2 205.5 Low 07:44:11 - 08:14:11 -1669
Gardnerville 07:59:10 -32.5 Dark Up 23.4 205.6 Low 07:44:10 - 08:14:10 -1683
Yerington 07:59:08 -32.5 Dark Up 23.2 206.1 Low 07:44:08 - 08:14:08 -1692
Hawthorne 07:59:05 -32.9 Dark Up 23.4 206.7 Low 07:44:05 - 08:14:05 -1729
Lee Vining 07:59:07 -33.5 Dark Up 24.1 206.4 Low 07:44:07 - 08:14:07 -1751
Bishop 07:59:03 -34.1 Dark Up 24.4 207.1 Low 07:44:03 - 08:14:03 -1801
Beatty 07:58:56 -34.5 Dark Up 24.2 208.7 Low 07:43:56 - 08:13:56 -1862
Dunrhomin 07:58:22 -30.0 Dark Up 16.5 218.0 Really Low 07:43:22 - 08:13:22 -1931
Nikitin 07:58:22 -30.2 Dark Up 16.6 218.0 Really Low 07:43:22 - 08:13:22 -1941
CU-SBO 07:58:22 -30.3 Dark Up 16.7 217.9 Really Low 07:43:22 - 08:13:22 -1943
Wildwood 07:58:59 -37.4 Dark Up 27.3 207.7 Low 07:43:59 - 08:13:59 -1998
Patrick 07:58:44 -35.9 Dark Up 24.3 211.6 Low 07:43:44 - 08:13:44 -2017
Laughlin/Bullhead City 07:58:46 -36.2 Dark Up 24.8 211.1 Low 07:43:46 - 08:13:46 -2017
Idyllwild 07:58:52 -37.7 Dark Up 26.9 209.5 Low 07:43:52 - 08:13:52 -2061
Lake Havasu City 07:58:44 -36.8 Dark Up 25.3 211.4 Low 07:43:44 - 08:13:44 -2066
Calipatria 07:58:47 -38.3 Dark Up 27.0 210.7 Low 07:43:47 - 08:13:47 -2129
George/Scottsdale 07:58:34 -37.4 Dark Up 24.9 213.8 Low 07:43:34 - 08:13:34 -2175
Yuma 07:58:43 -38.7 Dark Up 27.0 211.6 Low 07:43:43 - 08:13:43 -2178

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, (2023/07/30 08:01UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.70  23
Nunki          18:55:15.9 -26:17:49  2.0  3.43  10
28 Sgr         18:46:20.7 -22:23:32  4.9  0.99  10
PPM 268954     18:50:12.0 -22:50:54  7.5  0.48  10
PPM 268931     18:48:37.5 -23:12:54  9.1  0.04  10
09KN30         18:48:47.1 -23:12:07 16.3        10
Positions are for J2000

Event circumstances last updated at 2023/07/27 03:48:51 UT

Marc W. Buie, Southwest Research Institute

RECON