RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star UC4-589-019286 with event index number of 184110

Geocentric closest approach at 2019/03/26 04:02:44 UTC

J2000 position of star is 05:33:24.0 +27:41:31
Equinox of date position of star is 05:34:31.8 +27:42:12
Stellar brightness R=15.9, use SENSEUP=128
Star is 166 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 29.3 AU from the Sun and 29.5 AU from the Earth.
The TNO is moving 11.5 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 565 seconds.
The 1-sigma cross-track error in the shadow position is 1253 km.
The sky-plane scale is 21407.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 20.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 15875, (2019/03/26 04:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.6 +16:32:47  0.8 17.36 177
Alnath         05:27:30.6 +28:37:19  1.6  1.81 166
PPM 094572     05:38:21.0 +26:56:05  5.6  1.13 165
PPM 094499     05:35:33.8 +27:20:31  8.4  0.42 166
PPM 094503     05:35:49.1 +27:36:15  9.9  0.29 165
PPM 094478     05:34:34.3 +27:55:02 10.8  0.21 166
15875          05:34:36.6 +27:42:15 15.9       165
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 16.0 km RECON observability=1.0 and success probability=24.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:05:57 -17.9 AT Down 51.5 252.2 Up 03:50:57 - 04:20:57 1542
Tonasket 04:05:58 -18.0 AT Down 51.6 252.5 Up 03:50:58 - 04:20:58 1523
Okanogan 04:05:59 -18.0 Dark Down 51.7 252.7 Up 03:50:59 - 04:20:59 1491
Brewster 04:06:00 -18.0 Dark Down 52.0 252.8 Up 03:51:00 - 04:21:00 1462
Manson/Chelan 04:06:00 -17.9 AT Down 52.3 252.7 Up 03:51:00 - 04:21:00 1433
Entiat 04:06:01 -17.9 AT Down 52.4 252.9 Up 03:51:01 - 04:21:01 1412
Wenatchee 04:06:02 -18.0 AT Down 52.5 253.2 Up 03:51:02 - 04:21:02 1388
Niwot 04:07:53 -31.4 Dark Down 42.1 273.3 Up 03:52:53 - 04:22:53 1370
Ellensburg 04:06:04 -18.0 Dark Down 52.8 253.5 Up 03:51:04 - 04:21:04 1346
Pasco 04:06:15 -19.2 Dark Down 52.0 255.8 Up 03:51:15 - 04:21:15 1333
PNWRO 04:06:18 -19.5 Dark Down 51.9 256.4 Up 03:51:18 - 04:21:18 1320
Yakima 04:06:06 -18.2 Dark Down 52.9 254.0 Up 03:51:06 - 04:21:06 1311
Toppenish/White Swan 04:06:08 -18.4 Dark Down 52.8 254.4 Up 03:51:08 - 04:21:08 1299
George/Umatilla 04:06:16 -19.2 Dark Down 52.2 256.0 Up 03:51:16 - 04:21:16 1297
Goldendale 04:06:10 -18.3 Dark Down 53.2 254.7 Up 03:51:10 - 04:21:10 1237
The Dalles 04:06:10 -18.2 Dark Down 53.5 254.7 Up 03:51:10 - 04:21:10 1206
Maupin 04:06:12 -18.4 Dark Down 53.6 255.3 Up 03:51:12 - 04:21:12 1174
Madras/Culver 04:06:15 -18.6 Dark Down 53.7 256.0 Up 03:51:15 - 04:21:15 1125
Redmond 04:06:18 -18.7 Dark Down 53.8 256.5 Up 03:51:18 - 04:21:18 1093
Sisters 04:06:15 -18.4 Dark Down 54.1 256.0 Up 03:51:15 - 04:21:15 1081
Bend 04:06:18 -18.7 Dark Down 54.0 256.6 Up 03:51:18 - 04:21:18 1069
Oregon Observatory 04:06:19 -18.7 Dark Down 54.1 256.7 Up 03:51:19 - 04:21:19 1049
La Pine/Gilchrist 04:06:19 -18.7 Dark Down 54.2 257.0 Up 03:51:19 - 04:21:19 1029
North Lake 04:06:25 -19.3 Dark Down 53.9 258.1 Up 03:51:25 - 04:21:25 1013
Paisley 04:06:30 -19.8 Dark Down 53.7 259.2 Up 03:51:30 - 04:21:30 979
Lakeview 04:06:34 -20.1 Dark Down 53.6 260.0 Up 03:51:34 - 04:21:34 941
Chiloquin 04:06:24 -18.9 Dark Down 54.7 258.2 Up 03:51:24 - 04:21:24 919
Klamath Falls 04:06:27 -19.1 Dark Down 54.7 258.7 Up 03:51:27 - 04:21:27 892
Cedarville 04:06:39 -20.5 Dark Down 53.6 261.1 Up 03:51:39 - 04:21:39 891
Tulelake 04:06:30 -19.4 Dark Down 54.5 259.4 Up 03:51:30 - 04:21:30 880
Fall River/Burney 04:06:36 -19.8 Dark Down 54.6 260.7 Up 03:51:36 - 04:21:36 802
Susanville 04:06:43 -20.6 Dark Down 54.1 262.2 Up 03:51:43 - 04:21:43 774
Gimple 04:06:44 -20.6 Dark Down 54.3 262.4 Up 03:51:44 - 04:21:44 741
Greenville 04:06:43 -20.5 Dark Down 54.4 262.4 Up 03:51:43 - 04:21:43 738
Reno 04:06:53 -21.6 Dark Down 53.5 264.1 Up 03:51:53 - 04:21:53 729
Portola 04:06:48 -21.0 Dark Down 54.0 263.2 Up 03:51:48 - 04:21:48 727
Quincy 04:06:44 -20.6 Dark Down 54.4 262.6 Up 03:51:44 - 04:21:44 720
Yerington 04:06:59 -22.3 Dark Down 53.1 265.3 Up 03:51:59 - 04:21:59 705
Tonopah 04:07:15 -24.1 Dark Down 51.5 267.9 Up 03:52:15 - 04:22:15 700
Carson City 04:06:55 -21.7 Dark Down 53.6 264.6 Up 03:51:55 - 04:21:55 697
Hawthorne 04:07:04 -22.8 Dark Down 52.7 266.3 Up 03:52:04 - 04:22:04 684
Gardnerville 04:06:57 -21.8 Dark Down 53.5 264.9 Up 03:51:57 - 04:21:57 677
Indian Springs 04:07:31 -25.8 Dark Down 50.3 270.7 Up 03:52:31 - 04:22:31 631
Beatty 04:07:24 -24.9 Dark Down 51.2 269.6 Up 03:52:24 - 04:22:24 615
Lee Vining 04:07:05 -22.7 Dark Down 53.1 266.7 Up 03:52:05 - 04:22:05 614
Henderson 04:07:38 -26.6 Dark Down 49.7 271.8 Up 03:52:38 - 04:22:38 613
DCO 04:07:52 -28.4 Dark Down 48.1 273.8 Up 03:52:52 - 04:22:52 608
Patrick 04:07:47 -27.7 Dark Down 48.7 273.1 Up 03:52:47 - 04:22:47 605
Bishop 04:07:13 -23.5 Dark Down 52.5 268.0 Up 03:52:13 - 04:22:13 590
Kingman/Dolan Springs 04:07:47 -27.7 Dark Down 48.9 273.3 Up 03:52:47 - 04:22:47 577
Searchlight/Boulder City 04:07:41 -26.9 Dark Down 49.6 272.5 Up 03:52:41 - 04:22:41 564
Laughlin/Bullhead City 04:07:45 -27.3 Dark Down 49.3 273.0 Up 03:52:45 - 04:22:45 553
Lone Pine 04:07:18 -24.0 Dark Down 52.2 269.2 Up 03:52:18 - 04:22:18 535
Mohave Valley 04:07:46 -27.4 Dark Down 49.3 273.3 Up 03:52:46 - 04:22:46 529
Lake Havasu City 04:07:50 -27.8 Dark Down 49.0 273.9 Up 03:52:50 - 04:22:50 504
Parker 04:07:52 -27.9 Dark Down 49.0 274.4 Up 03:52:52 - 04:22:52 473
Blythe 04:07:53 -27.9 Dark Down 49.2 274.8 Up 03:52:53 - 04:22:53 413
Idyllwild 04:07:42 -26.2 Dark Down 51.0 273.6 Up 03:52:42 - 04:22:42 332
Yuma 04:07:58 -28.3 Dark Down 49.1 275.9 Up 03:52:58 - 04:22:58 328
Calipatria 04:07:52 -27.4 Dark Down 49.9 275.0 Up 03:52:52 - 04:22:52 328
CPSLO 04:07:12 -22.5 Dark Down 54.4 269.4 Up 03:52:12 - 04:22:12 310
Wildwood 04:07:30 -24.6 Dark Down 52.6 272.2 Up 03:52:30 - 04:22:30 284

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, (2019/03/26 04:03UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 17.36 177
Alnath         05:26:17.5 +28:36:24  1.6  1.81 166
PPM 094572     05:37:08.9 +26:55:28  5.6  1.13 165
PPM 094499     05:34:21.5 +27:19:49  8.4  0.42 166
PPM 094503     05:34:36.6 +27:35:34  9.9  0.29 165
PPM 094478     05:33:21.7 +27:54:18 10.8  0.21 166
15875          05:33:24.0 +27:41:31 15.9       166
Positions are for J2000

Event circumstances last updated at 2017/12/15 17:14:20 UT

Marc W. Buie, Southwest Research Institute

RECON