RECON: TNO occultation with 15KH162

Event between 15KH162 and star GA0880:04699561 with event index number of 1956213

Geocentric closest approach at 2025/05/28 08:20:14 UTC

J2000 position of star is 16:12:26.0 -00:48:43
Equinox of date position of star is 16:13:39.0 -00:52:16
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 61.6 AU from the Sun and 60.6 AU from the Earth.
Apparent velocity is 26.0 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 2357 km.
The sky-plane scale is 43962.1 km/arcsec.

The object has an absolute magnitude Hv=4.0
Diameter=946.3 km assuming a 5% albedo -- 36.8 sec chord
Diameter=386.3 km assuming a 30% albedo -- 15.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 15KH162, (2025/05/28 08:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:58.2 -26:29:10  0.9 25.94 165
1Del Oph       16:15:40.8 -03:45:28  2.7  2.92 149
PPM 199363     16:11:10.4 -03:31:54  5.0  2.73 148
PPM 179746     16:14:29.6 -00:34:57  8.2  0.35 146
PPM 179736     16:12:56.2 -00:53:53  9.9  0.20 146
PPM 179745     16:14:17.9 -00:57:09 10.3  0.16 146
15KH162        16:13:44.6 -00:52:32 14.2       146
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 21.7 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:20:01 -14.4 AT Down 33.9 207.0 Up 08:10:32 - 08:29:30 -5184
Kamloops 08:20:34 -17.6 AT Down 38.1 189.9 Up 08:11:05 - 08:30:03 -5465
Kelowna 08:20:32 -18.4 Dark Down 38.8 191.2 Up 08:11:03 - 08:30:01 -5506
Peachland 08:20:33 -18.5 Dark Down 38.9 190.8 Up 08:11:04 - 08:30:02 -5518
Summerland 08:20:33 -18.7 Dark Down 39.1 191.0 Up 08:11:04 - 08:30:02 -5526
Penticton 08:20:31 -18.7 Dark Down 39.1 191.1 Up 08:11:02 - 08:30:00 -5529
Oliver 08:20:32 -19.1 Dark Down 39.5 191.2 Up 08:11:03 - 08:30:01 -5553
Anarchist Mountain Observatory 08:20:31 -19.2 Dark Down 39.6 191.4 Up 08:11:02 - 08:30:00 -5561
Okanogan 08:20:31 -19.9 Dark Down 40.3 191.3 Up 08:11:02 - 08:30:00 -5609
Brewster 08:20:31 -20.2 Dark Down 40.6 191.0 Up 08:11:02 - 08:30:00 -5631
Manson/Chelan 08:20:32 -20.4 Dark Down 40.8 190.6 Up 08:11:03 - 08:30:01 -5650
Victoria 08:20:42 -19.9 Dark Down 40.5 186.3 Up 08:11:13 - 08:30:11 -5655
Wenatchee 08:20:32 -20.9 Dark Down 41.3 190.4 Up 08:11:03 - 08:30:01 -5686
Ellensburg 08:20:32 -21.3 Dark Down 41.7 190.2 Up 08:11:03 - 08:30:01 -5719
Yakima 08:20:32 -21.7 Dark Down 42.1 190.3 Up 08:11:03 - 08:30:01 -5748
Toppenish/White Swan 08:20:31 -21.9 Dark Down 42.3 190.5 Up 08:11:02 - 08:30:00 -5761
PNWRO 08:20:29 -22.2 Dark Down 42.5 192.6 Up 08:11:00 - 08:29:58 -5764
The Dalles 08:20:33 -22.7 Dark Down 43.2 189.6 Up 08:11:04 - 08:30:02 -5830
Maupin 08:20:32 -23.2 Dark Down 43.6 189.8 Up 08:11:03 - 08:30:01 -5858
Sisters 08:20:33 -24.1 Dark Down 44.5 189.3 Up 08:11:04 - 08:30:02 -5931
Bend 08:20:32 -24.3 Dark Down 44.7 189.6 Up 08:11:03 - 08:30:01 -5945
Oregon Observatory 08:20:32 -24.5 Dark Down 44.9 189.5 Up 08:11:03 - 08:30:01 -5960
Dunrhomin 08:19:39 -25.4 Dark Down 44.0 212.5 Up 08:10:10 - 08:29:08 -5977
Nikitin 08:19:38 -25.5 Dark Down 44.2 212.6 Up 08:10:09 - 08:29:07 -5992
CU-SBO 08:19:38 -25.6 Dark Down 44.2 212.5 Up 08:10:09 - 08:29:07 -5998
Chiloquin 08:20:31 -25.8 Dark Down 46.3 189.1 Up 08:11:02 - 08:30:00 -6068
Klamath Falls 08:20:32 -26.1 Dark Down 46.6 189.3 Up 08:11:03 - 08:30:01 -6093
Cedarville 08:20:28 -26.7 Dark Down 47.0 191.7 Up 08:10:59 - 08:29:57 -6121
Fall River/Burney 08:20:29 -27.3 Dark Down 47.7 190.0 Up 08:11:00 - 08:29:58 -6179
Gimple 08:20:28 -28.2 Dark Down 48.5 191.0 Up 08:10:59 - 08:29:57 -6243
Greenville 08:20:28 -28.2 Dark Down 48.5 190.9 Up 08:10:59 - 08:29:57 -6244
Quincy 08:20:28 -28.4 Dark Down 48.7 190.9 Up 08:10:59 - 08:29:57 -6260
Portola 08:20:28 -28.5 Dark Down 48.8 191.7 Up 08:10:59 - 08:29:57 -6263
Reno 08:20:23 -28.7 Dark Down 48.9 192.7 Up 08:10:54 - 08:29:52 -6272
Carson City 08:20:22 -29.0 Dark Down 49.3 192.8 Up 08:10:53 - 08:29:51 -6301
Yerington 08:20:20 -29.2 Dark Down 49.4 193.8 Up 08:10:51 - 08:29:49 -6306
Gardnerville 08:20:22 -29.3 Dark Down 49.5 192.9 Up 08:10:53 - 08:29:51 -6320
Hawthorne 08:20:18 -29.6 Dark Down 49.7 194.7 Up 08:10:49 - 08:29:47 -6335
Lee Vining 08:20:18 -30.2 Dark Down 50.4 194.2 Up 08:10:49 - 08:29:47 -6389
Bishop 08:20:16 -30.7 Dark Down 50.8 195.4 Up 08:10:47 - 08:29:45 -6427
Beatty 08:20:10 -31.0 Dark Down 50.9 198.1 Up 08:10:41 - 08:29:39 -6437
Patrick 08:19:58 -32.0 Dark Down 51.4 203.1 Up 08:10:29 - 08:29:27 -6511
Laughlin/Bullhead City 08:20:01 -32.3 Dark Down 51.9 202.1 Up 08:10:32 - 08:29:30 -6545
Lake Havasu City 08:19:59 -33.0 Dark Down 52.4 202.9 Up 08:10:30 - 08:29:28 -6598
George/Scottsdale 08:19:50 -33.2 Dark Down 52.3 207.0 Up 08:10:21 - 08:29:19 -6621
Idyllwild 08:20:06 -34.1 Dark Down 53.8 199.5 Up 08:10:37 - 08:29:35 -6706
Wildwood 08:20:13 -34.0 Dark Down 54.0 196.3 Up 08:10:44 - 08:29:42 -6709
Calipatria 08:20:02 -34.5 Dark Down 54.1 201.7 Up 08:10:33 - 08:29:31 -6738
Yuma 08:19:58 -34.8 Dark Down 54.2 203.3 Up 08:10:29 - 08:29:27 -6760

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 15KH162, (2025/05/28 08:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.94 165
1Del Oph       16:14:20.7 -03:41:43  2.7  2.92 149
PPM 199363     16:09:50.5 -03:28:00  5.0  2.73 148
PPM 179746     16:13:11.1 -00:31:09  8.2  0.35 146
PPM 179736     16:11:37.7 -00:50:02  9.9  0.20 146
PPM 179745     16:12:59.3 -00:53:21 10.3  0.16 146
15KH162        16:12:26.0 -00:48:43 14.2       146
Positions are for J2000

Event circumstances last updated at 2023/08/09 02:52:07 UT

Marc W. Buie, Southwest Research Institute

RECON