RECON: TNO occultation with 02VT130

Event between 02VT130 and star UC4-571-014939 with event index number of 151439

Geocentric closest approach at 2018/04/03 03:52:15 UTC

J2000 position of star is 05:08:44.4 +24:02:01
Equinox of date position of star is 05:09:48.0 +24:03:17
Stellar brightness R=16.3, use SENSEUP=128
Star is 147 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 43.1 AU from the Sun and 43.5 AU from the Earth.
The TNO is moving 16.5 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 247 seconds.
The 1-sigma cross-track error in the shadow position is 2306 km.
The sky-plane scale is 31553.7 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 25.2 sec chord
Diameter=170.2 km assuming a 30% albedo -- 10.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02VT130, (2018/04/03 03:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:58.2 +16:32:41  0.8 10.76 156
Alnath         05:27:26.8 +28:37:16  1.6  6.03 142
103 Tau        05:09:13.5 +24:17:15  5.3  0.27 147
PPM 094048     05:06:18.6 +23:49:22  8.3  0.84 148
103 Tau        05:09:13.5 +24:17:15  5.3  0.27 147
PPM 094108     05:10:15.8 +23:56:43 11.0  0.14 147
02VT130        05:09:51.2 +24:03:21 16.3       147
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 3.6 sigma about the mid-time.
The median site spacing is 19.8 km RECON observability=0.8 and success probability=4.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:55:52 -14.2 AT Down 41.4 259.3 Up 03:40:52 - 04:10:52 -4007
Tonasket 03:55:53 -14.3 AT Down 41.5 259.5 Up 03:40:53 - 04:10:53 -4028
Okanogan 03:55:53 -14.3 AT Down 41.6 259.7 Up 03:40:53 - 04:10:53 -4062
Brewster 03:55:54 -14.3 AT Down 41.8 259.7 Up 03:40:54 - 04:10:54 -4091
Manson/Chelan 03:55:54 -14.2 AT Down 42.1 259.6 Up 03:40:54 - 04:10:54 -4118
Entiat 03:55:54 -14.2 AT Down 42.2 259.7 Up 03:40:54 - 04:10:54 -4140
Wenatchee 03:55:56 -14.3 AT Down 42.3 259.9 Up 03:40:56 - 04:10:56 -4165
Ellensburg 03:55:56 -14.3 AT Down 42.5 260.1 Up 03:40:56 - 04:10:56 -4208
Pasco 03:56:03 -15.5 AT Down 41.6 261.9 Up 03:41:03 - 04:11:03 -4245
Yakima 03:55:57 -14.5 AT Down 42.6 260.4 Up 03:40:57 - 04:10:57 -4246
PNWRO 03:56:04 -15.8 AT Down 41.5 262.3 Up 03:41:04 - 04:11:04 -4262
Toppenish/White Swan 03:55:58 -14.7 AT Down 42.5 260.8 Up 03:40:58 - 04:10:58 -4263
George/Umatilla 03:56:04 -15.6 AT Down 41.8 262.1 Up 03:41:04 - 04:11:04 -4281
Goldendale 03:56:00 -14.6 AT Down 42.9 260.9 Up 03:41:00 - 04:11:00 -4324
The Dalles 03:55:59 -14.5 AT Down 43.1 260.8 Up 03:40:59 - 04:10:59 -4353
Maupin 03:56:01 -14.7 AT Down 43.1 261.3 Up 03:41:01 - 04:11:01 -4390
Niwot 03:57:01 -27.6 Dark Up 31.3 276.3 Up 03:42:01 - 04:12:01 -4429
Madras/Culver 03:56:03 -14.9 AT Down 43.2 261.8 Up 03:41:03 - 04:11:03 -4442
Redmond 03:56:04 -15.1 AT Down 43.3 262.1 Up 03:41:04 - 04:11:04 -4477
Sisters 03:56:03 -14.8 AT Down 43.6 261.8 Up 03:41:03 - 04:11:03 -4485
Bend 03:56:04 -15.0 AT Down 43.4 262.2 Up 03:41:04 - 04:11:04 -4501
Oregon Observatory 03:56:04 -15.0 AT Down 43.6 262.2 Up 03:41:04 - 04:11:04 -4521
La Pine/Gilchrist 03:56:05 -15.1 AT Down 43.6 262.4 Up 03:41:05 - 04:11:05 -4542
North Lake 03:56:08 -15.6 AT Down 43.2 263.3 Up 03:41:08 - 04:11:08 -4569
Paisley 03:56:11 -16.1 AT Down 43.0 264.1 Up 03:41:11 - 04:11:11 -4613
Chiloquin 03:56:08 -15.3 AT Down 44.0 263.2 Up 03:41:08 - 04:11:08 -4657
Lakeview 03:56:14 -16.5 AT Down 42.9 264.7 Up 03:41:14 - 04:11:14 -4657
Klamath Falls 03:56:09 -15.4 AT Down 44.0 263.6 Up 03:41:09 - 04:11:09 -4688
Tulelake 03:56:11 -15.8 AT Down 43.8 264.1 Up 03:41:11 - 04:11:11 -4707
Cedarville 03:56:17 -16.8 AT Down 42.8 265.4 Up 03:41:17 - 04:11:17 -4716
Fall River/Burney 03:56:15 -16.2 AT Down 43.8 265.0 Up 03:41:15 - 04:11:15 -4793
Susanville 03:56:19 -17.0 AT Down 43.3 266.1 Up 03:41:19 - 04:11:19 -4836
Gimple 03:56:19 -16.9 AT Down 43.5 266.3 Up 03:41:19 - 04:11:19 -4869
Greenville 03:56:19 -16.8 AT Down 43.5 266.2 Up 03:41:19 - 04:11:19 -4870
Quincy 03:56:20 -16.9 AT Down 43.5 266.4 Up 03:41:20 - 04:11:20 -4890
Portola 03:56:21 -17.3 AT Down 43.2 266.8 Up 03:41:21 - 04:11:21 -4890
Reno 03:56:24 -17.9 AT Down 42.7 267.5 Up 03:41:24 - 04:11:24 -4900
Carson City 03:56:25 -18.1 Dark Down 42.7 267.9 Up 03:41:25 - 04:11:25 -4934
Yerington 03:56:28 -18.6 Dark Down 42.2 268.5 Up 03:41:28 - 04:11:28 -4937
Gardnerville 03:56:26 -18.2 Dark Down 42.6 268.2 Up 03:41:26 - 04:11:26 -4957
Hawthorne 03:56:31 -19.2 Dark Down 41.8 269.3 Up 03:41:31 - 04:11:31 -4968
Tonopah 03:56:37 -20.4 Dark Down 40.6 270.6 Up 03:41:37 - 04:11:37 -4976
Lee Vining 03:56:32 -19.0 Dark Down 42.1 269.5 Up 03:41:32 - 04:11:32 -5037
Bishop 03:56:36 -19.8 Dark Down 41.6 270.4 Up 03:41:36 - 04:11:36 -5077
Beatty 03:56:42 -21.2 Dark Down 40.2 271.8 Up 03:41:42 - 04:11:42 -5077
Indian Springs 03:56:47 -22.2 Dark Down 39.3 272.7 Up 03:41:47 - 04:11:47 -5078
Henderson 03:56:50 -22.9 Dark Down 38.7 273.6 Up 03:41:50 - 04:11:50 -5111
Patrick 03:56:56 -24.0 Dark Down 37.8 274.7 Up 03:41:56 - 04:11:56 -5140
Lone Pine 03:56:38 -20.4 Dark Down 41.3 271.3 Up 03:41:38 - 04:11:38 -5143
DCO 03:57:00 -24.7 Dark Down 37.1 275.3 Up 03:42:00 - 04:12:00 -5148
Searchlight/Boulder City 03:56:53 -23.2 Dark Down 38.6 274.1 Up 03:41:53 - 04:11:53 -5166
Kingman/Dolan Springs 03:56:56 -24.0 Dark Down 37.9 274.7 Up 03:41:56 - 04:11:56 -5167
Laughlin/Bullhead City 03:56:55 -23.6 Dark Down 38.3 274.5 Up 03:41:55 - 04:11:55 -5185
Mohave Valley 03:56:55 -23.7 Dark Down 38.3 274.7 Up 03:41:55 - 04:11:55 -5212
Lake Havasu City 03:56:58 -24.1 Dark Down 38.0 275.1 Up 03:41:58 - 04:11:58 -5244
Parker 03:56:59 -24.3 Dark Down 38.0 275.4 Up 03:41:59 - 04:11:59 -5278
Blythe 03:57:00 -24.3 Dark Down 38.2 275.7 Up 03:42:00 - 04:12:00 -5339
CPSLO 03:56:34 -18.9 Dark Down 43.4 271.0 Up 03:41:34 - 04:11:34 -5344
Idyllwild 03:56:52 -22.6 Dark Down 40.0 274.5 Up 03:41:52 - 04:11:52 -5390
Wildwood 03:56:45 -21.0 Dark Down 41.6 273.3 Up 03:41:45 - 04:11:45 -5409
Calipatria 03:56:58 -23.7 Dark Down 38.9 275.6 Up 03:41:58 - 04:11:58 -5417
Yuma 03:57:01 -24.6 Dark Down 38.1 276.4 Up 03:42:01 - 04:12:01 -5433

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 02VT130, (2018/04/03 03:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 10.76 156
Alnath         05:26:17.5 +28:36:24  1.6  6.03 142
103 Tau        05:08:06.6 +24:15:54  5.3  0.27 147
PPM 094048     05:05:12.0 +23:47:56  8.3  0.84 148
103 Tau        05:08:06.6 +24:15:54  5.3  0.27 147
PPM 094108     05:09:09.1 +23:55:24 11.0  0.14 147
02VT130        05:08:44.4 +24:02:01 16.3       147
Positions are for J2000

Event circumstances last updated at 2017/05/23 16:15:23 UT

Marc W. Buie, Southwest Research Institute

RECON