RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star GA1160:02105181 with event index number of 1210955

Geocentric closest approach at 2023/03/20 04:03:04 UTC

J2000 position of star is 06:16:15.7 +27:09:37
Equinox of date position of star is 06:17:42.3 +27:09:03
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 4% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 30.5 AU from the Sun and 30.4 AU from the Earth.
Apparent velocity is 3.7 km/sec on the sky relative to the star, or, 0.6 arcsec/hr.
The 1-sigma error in the time of the event is 1291 seconds.
The 1-sigma cross-track error in the shadow position is 1242 km.
The sky-plane scale is 22083.2 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=204.2 km assuming a 5% albedo -- 54.2 sec chord
Diameter=83.4 km assuming a 30% albedo -- 22.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2023/03/20 04:11UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:44.1 +27:58:06  1.1 19.72 135
Alnath         05:27:45.7 +28:37:30  1.6 11.13 105
44Kap Aur      06:16:51.5 +29:29:15  4.3  2.34 116
PPM 095737     06:19:48.0 +27:11:56  7.8  0.47 116
PPM 095713     06:18:51.6 +27:03:41  9.4  0.27 116
PPM 095695     06:17:56.4 +27:12:55 10.2  0.08 116
15875          06:17:43.0 +27:09:03 16.1       116
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 0.7 sigma about the mid-time.
The median site spacing is 10.6 km RECON observability=1.0 and success probability=19.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:02:26 -24.9 Dark Down 52.2 243.6 Up 03:47:26 - 04:17:26 -1168
Dunrhomin 04:08:19 -32.9 Dark Down 54.4 261.1 Up 03:53:19 - 04:23:19 -1517
Nikitin 04:08:24 -33.0 Dark Down 54.4 261.4 Up 03:53:24 - 04:23:24 -1526
CU-SBO 04:08:24 -33.0 Dark Down 54.5 261.4 Up 03:53:24 - 04:23:24 -1533
Kelowna 04:01:33 -18.5 Dark Down 60.7 228.3 Up 03:46:33 - 04:16:33 -1982
Kamloops 04:01:04 -17.5 AT Down 60.6 225.7 Up 03:46:04 - 04:16:04 -1994
Penticton 04:01:43 -18.6 Dark Down 60.9 228.7 Up 03:46:43 - 04:16:43 -2002
Peachland 04:01:35 -18.3 Dark Down 60.9 228.0 Up 03:46:35 - 04:16:35 -2004
Summerland 04:01:40 -18.5 Dark Down 60.9 228.4 Up 03:46:40 - 04:16:40 -2005
Anarchist Mountain Observatory 04:01:58 -18.9 Dark Down 61.1 229.8 Up 03:46:58 - 04:16:58 -2015
Oliver 04:01:51 -18.7 Dark Down 61.1 229.2 Up 03:46:51 - 04:16:51 -2019
Okanogan 04:02:14 -19.1 Dark Down 61.6 230.5 Up 03:47:14 - 04:17:14 -2059
Brewster 04:02:18 -19.0 Dark Down 61.9 230.6 Up 03:47:18 - 04:17:18 -2083
Manson/Chelan 04:02:20 -18.9 Dark Down 62.2 230.3 Up 03:47:20 - 04:17:20 -2115
PNWRO 04:03:25 -20.6 Dark Down 62.5 235.5 Up 03:48:25 - 04:18:25 -2130
Wenatchee 04:02:30 -19.0 Dark Down 62.6 230.8 Up 03:47:30 - 04:17:30 -2148
Ellensburg 04:02:38 -19.0 Dark Down 62.9 231.2 Up 03:47:38 - 04:17:38 -2181
Yakima 04:02:49 -19.2 Dark Down 63.2 231.8 Up 03:47:49 - 04:17:49 -2202
Toppenish/White Swan 04:02:59 -19.4 Dark Down 63.2 232.5 Up 03:47:59 - 04:17:59 -2203
George/Scottsdale 04:10:29 -31.7 Dark Down 60.0 266.7 Up 03:55:29 - 04:25:29 -2257
Victoria 04:01:26 -16.5 AT Down 63.5 223.7 Up 03:46:26 - 04:16:26 -2271
The Dalles 04:03:13 -19.2 Dark Down 64.1 232.6 Up 03:48:13 - 04:18:13 -2290
Maupin 04:03:22 -19.4 Dark Down 64.2 233.5 Up 03:48:22 - 04:18:22 -2304
Patrick 04:09:14 -29.2 Dark Down 61.7 262.0 Up 03:54:14 - 04:24:14 -2317
Bend 04:03:51 -19.8 Dark Down 64.9 235.2 Up 03:48:51 - 04:18:51 -2376
Laughlin/Bullhead City 04:09:11 -28.8 Dark Down 62.3 261.9 Up 03:54:11 - 04:24:11 -2379
Sisters 04:03:41 -19.5 Dark Down 65.0 234.4 Up 03:48:41 - 04:18:41 -2380
Oregon Observatory 04:03:50 -19.7 Dark Down 65.1 235.3 Up 03:48:50 - 04:18:50 -2393
Lake Havasu City 04:09:38 -29.3 Dark Down 62.1 263.4 Up 03:54:38 - 04:24:38 -2395
Cedarville 04:05:11 -21.6 Dark Down 65.3 242.1 Up 03:50:11 - 04:20:11 -2435
Beatty 04:07:58 -26.3 Dark Down 64.0 256.3 Up 03:52:58 - 04:22:58 -2444
Hawthorne 04:06:53 -24.1 Dark Down 65.2 250.7 Up 03:51:53 - 04:21:53 -2489
Chiloquin 04:04:23 -20.0 Dark Down 66.0 237.3 Up 03:49:23 - 04:19:23 -2489
Yerington 04:06:32 -23.5 Dark Down 65.4 249.0 Up 03:51:32 - 04:21:32 -2500
Klamath Falls 04:04:34 -20.2 Dark Down 66.1 238.2 Up 03:49:34 - 04:19:34 -2502
Yuma 04:10:24 -29.9 Dark Down 62.4 266.8 Up 03:55:24 - 04:25:24 -2510
Reno 04:06:16 -22.8 Dark Down 65.8 246.9 Up 03:51:16 - 04:21:16 -2515
Carson City 04:06:21 -22.9 Dark Down 65.9 247.7 Up 03:51:21 - 04:21:21 -2533
Bishop 04:07:32 -24.8 Dark Down 65.2 253.5 Up 03:52:32 - 04:22:32 -2534
Fall River/Burney 04:05:13 -20.9 Dark Down 66.4 241.3 Up 03:50:13 - 04:20:13 -2541
Gardnerville 04:06:32 -23.1 Dark Down 65.9 248.3 Up 03:51:32 - 04:21:32 -2543
Portola 04:05:53 -22.1 Dark Down 66.2 245.4 Up 03:50:53 - 04:20:53 -2545
Lee Vining 04:07:07 -24.0 Dark Down 65.7 251.3 Up 03:52:07 - 04:22:07 -2552
Calipatria 04:09:56 -28.9 Dark Down 63.2 265.2 Up 03:54:56 - 04:24:56 -2553
Gimple 04:05:43 -21.7 Dark Down 66.3 244.1 Up 03:50:43 - 04:20:43 -2554
Greenville 04:05:37 -21.6 Dark Down 66.4 243.9 Up 03:50:37 - 04:20:37 -2560
Quincy 04:05:46 -21.7 Dark Down 66.5 244.4 Up 03:50:46 - 04:20:46 -2570
Idyllwild 04:09:31 -27.7 Dark Down 64.2 263.1 Up 03:54:31 - 04:24:31 -2606
Wildwood 04:08:59 -26.0 Dark Down 65.8 260.7 Up 03:53:59 - 04:23:59 -2724

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 15875, (2023/03/20 04:11UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 19.72 135
Alnath         05:26:17.5 +28:36:23  1.6 11.13 105
44Kap Aur      06:15:22.6 +29:29:47  4.3  2.34 116
PPM 095737     06:18:20.7 +27:12:35  7.8  0.47 116
PPM 095713     06:17:24.4 +27:04:18  9.4  0.27 116
PPM 095695     06:16:29.1 +27:13:30 10.2  0.08 116
15875          06:16:15.7 +27:09:37 16.1       116
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:31:35 UT

Marc W. Buie, Southwest Research Institute

RECON