RECON: TNO occultation with 15RV245

Event between 15RV245 and star GA1140:00288970 with event index number of 1979574

Geocentric closest approach at 2027/10/13 12:20:07 UTC

J2000 position of star is 02:21:48.0 +25:14:58
Equinox of date position of star is 02:23:10.3 +25:21:27
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 46 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=24.4

[RECON map]
Object is 27.0 AU from the Sun and 26.0 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 309 seconds.
The 1-sigma cross-track error in the shadow position is 4491 km.
The sky-plane scale is 18884.0 km/arcsec.

The object has an absolute magnitude Hv=10.1
Diameter=56.8 km assuming a 5% albedo -- 2.4 sec chord
Diameter=23.2 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 15RV245, (2027/10/13 12:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:31.1 +16:33:47  0.8 32.43  74
Hamal          02:08:44.7 +23:35:34  2.0  3.78  42
21 Ari         02:17:17.8 +25:10:14  5.6  1.39  44
PPM 091561     02:21:10.6 +25:38:21  7.9  0.57  45
PPM 091618     02:24:32.4 +25:19:16  9.3  0.26  46
15RV245        02:23:23.7 +25:22:30 15.9        46
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 2.9 sigma about the mid-time.
The median site spacing is 34.9 km RECON observability=0.9 and success probability=10.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:17:06 -11.2 NT Down 35.0 267.0 Up 12:02:06 - 12:32:06 -756
Kamloops 12:17:29 -20.2 Dark Up 44.1 255.8 Up 12:02:29 - 12:32:29 -1129
Kelowna 12:17:25 -19.9 Dark Up 43.7 257.4 Up 12:02:25 - 12:32:25 -1198
Peachland 12:17:26 -20.1 Dark Up 43.9 257.2 Up 12:02:26 - 12:32:26 -1213
Summerland 12:17:25 -20.0 Dark Up 43.9 257.5 Up 12:02:25 - 12:32:25 -1226
Penticton 12:17:25 -20.0 Dark Up 43.8 257.6 Up 12:02:25 - 12:32:25 -1232
Oliver 12:17:24 -20.1 Dark Up 43.9 258.0 Up 12:02:24 - 12:32:24 -1267
Anarchist Mountain Observatory 12:17:23 -20.0 Dark Down 43.8 258.3 Up 12:02:23 - 12:32:23 -1281
Okanogan 12:17:23 -20.2 Dark Up 44.1 258.7 Up 12:02:23 - 12:32:23 -1350
Brewster 12:17:23 -20.4 Dark Up 44.3 258.8 Up 12:02:23 - 12:32:23 -1380
Victoria 12:17:31 -22.7 Dark Up 46.5 255.1 Up 12:02:31 - 12:32:31 -1383
Manson/Chelan 12:17:23 -20.7 Dark Up 44.6 258.7 Up 12:02:23 - 12:32:23 -1406
Wenatchee 12:17:23 -20.9 Dark Up 44.8 259.0 Up 12:02:23 - 12:32:23 -1457
Ellensburg 12:17:22 -21.2 Dark Up 45.0 259.2 Up 12:02:22 - 12:32:22 -1502
Yakima 12:17:22 -21.2 Dark Up 45.1 259.6 Up 12:02:22 - 12:32:22 -1544
Toppenish/White Swan 12:17:21 -21.2 Dark Up 45.0 259.9 Up 12:02:21 - 12:32:21 -1564
PNWRO 12:17:17 -20.2 Dark Down 44.0 261.5 Up 12:02:17 - 12:32:17 -1580
The Dalles 12:17:21 -21.9 Dark Up 45.7 260.0 Up 12:02:21 - 12:32:21 -1655
Maupin 12:17:21 -21.9 Dark Up 45.7 260.5 Up 12:02:21 - 12:32:21 -1697
Sisters 12:17:20 -22.4 Dark Up 46.2 261.0 Up 12:02:20 - 12:32:20 -1795
Bend 12:17:19 -22.3 Dark Up 46.0 261.5 Up 12:02:19 - 12:32:19 -1816
Oregon Observatory 12:17:19 -22.4 Dark Up 46.1 261.6 Up 12:02:19 - 12:32:19 -1836
Dunrhomin 12:16:39 -10.8 NT Down 34.3 275.7 Up 12:01:39 - 12:31:39 -1896
Nikitin 12:16:39 -10.8 NT Down 34.3 275.8 Up 12:01:39 - 12:31:39 -1915
CU-SBO 12:16:39 -10.9 NT Down 34.3 275.8 Up 12:01:39 - 12:31:39 -1924
Chiloquin 12:17:18 -22.9 Dark Up 46.6 262.6 Up 12:02:18 - 12:32:18 -1979
Klamath Falls 12:17:18 -23.0 Dark Up 46.6 263.0 Up 12:02:18 - 12:32:18 -2014
Cedarville 12:17:13 -21.9 Dark Up 45.5 264.9 Up 12:02:13 - 12:32:13 -2064
Fall River/Burney 12:17:15 -22.9 Dark Up 46.5 264.5 Up 12:02:15 - 12:32:15 -2133
Gimple 12:17:12 -22.6 Dark Up 46.1 265.9 Up 12:02:12 - 12:32:12 -2222
Greenville 12:17:13 -22.7 Dark Up 46.2 265.8 Up 12:02:13 - 12:32:13 -2223
Quincy 12:17:12 -22.7 Dark Up 46.2 266.0 Up 12:02:12 - 12:32:12 -2244
Portola 12:17:11 -22.4 Dark Up 45.9 266.5 Up 12:02:11 - 12:32:11 -2250
Reno 12:17:09 -22.0 Dark Down 45.4 267.2 Up 12:02:09 - 12:32:09 -2268
Carson City 12:17:08 -22.0 Dark Down 45.4 267.6 Up 12:02:08 - 12:32:08 -2306
Yerington 12:17:07 -21.5 Dark Down 44.9 268.2 Up 12:02:07 - 12:32:07 -2316
Gardnerville 12:17:08 -22.0 Dark Down 45.4 267.8 Up 12:02:08 - 12:32:08 -2331
Hawthorne 12:17:05 -21.2 Dark Down 44.5 269.0 Up 12:02:05 - 12:32:05 -2357
Lee Vining 12:17:05 -21.6 Dark Down 44.9 269.2 Up 12:02:05 - 12:32:05 -2425
Bishop 12:17:02 -21.1 Dark Down 44.3 270.2 Up 12:02:02 - 12:32:02 -2476
Beatty 12:16:58 -19.9 Dark Down 43.0 271.6 Up 12:01:58 - 12:31:58 -2496
Patrick 12:16:49 -17.7 AT Down 40.7 274.5 Up 12:01:49 - 12:31:49 -2598
Laughlin/Bullhead City 12:16:50 -18.3 Dark Down 41.2 274.4 Up 12:01:50 - 12:31:50 -2638
Lake Havasu City 12:16:49 -18.1 Dark Down 41.0 275.1 Up 12:01:49 - 12:31:49 -2705
George/Scottsdale 12:16:42 -16.1 AT Down 38.9 276.9 Up 12:01:42 - 12:31:42 -2734
Wildwood 12:16:59 -21.7 Dark Down 44.4 273.3 Up 12:01:59 - 12:31:59 -2831
Idyllwild 12:16:54 -20.1 Dark Down 42.8 274.6 Up 12:01:54 - 12:31:54 -2834
Calipatria 12:16:50 -19.2 Dark Down 41.8 275.7 Up 12:01:50 - 12:31:50 -2876
Yuma 12:16:48 -18.5 Dark Down 41.0 276.5 Up 12:01:48 - 12:31:48 -2904

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 15RV245, (2027/10/13 12:20UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 32.43  74
Hamal          02:07:10.7 +23:27:41  2.0  3.78  42
21 Ari         02:15:42.6 +25:02:33  5.6  1.39  44
PPM 091561     02:19:35.0 +25:30:45  7.9  0.57  45
PPM 091618     02:22:56.7 +25:11:45  9.3  0.26  46
15RV245        02:21:48.0 +25:14:58 15.9        46
Positions are for J2000

Event circumstances last updated at 2023/11/27 04:20:05 UT

Marc W. Buie, Southwest Research Institute

RECON