RECON: TNO occultation with 15VA164

Event between 15VA164 and star GA1060:00380080 with event index number of 360037

Geocentric closest approach at 2018/12/19 01:49:43 UTC

J2000 position of star is 03:37:10.6 +17:54:01
Equinox of date position of star is 03:38:15.1 +17:57:40
Stellar brightness G=12.3, use SENSEUP=16
Star is 18 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=24.0

[RECON map]
TNO is 47.0 AU from the Sun and 46.2 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 421 seconds.
The 1-sigma cross-track error in the shadow position is 4368 km.
The sky-plane scale is 33487.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=213.8 km assuming a 5% albedo -- 9.7 sec chord
Diameter=87.3 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 15VA164, (2018/12/19 01:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.7 +16:32:45  0.8 14.09  31
44Zet Per      03:55:19.7 +31:56:18  2.8 14.50  29
PPM 119253     03:40:30.3 +16:35:49  6.2  1.47  18
PPM 119209     03:37:21.6 +17:52:25  8.5  0.23  17
PPM 119225     03:38:08.5 +17:54:40 10.0  0.06  18
15VA164        03:38:15.6 +17:57:42 12.3        18
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 2.1 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=0.5 and success probability=8.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 01:51:23 -17.0 AT Up 33.7 102.6 Up 01:36:23 - 02:06:23 902
Kelowna 01:51:22 -17.2 AT Up 33.9 102.9 Up 01:36:22 - 02:06:22 894
Penticton 01:51:24 -17.0 AT Up 33.9 102.5 Up 01:36:24 - 02:06:24 878
Okanagan Falls 01:51:25 -17.0 AT Up 33.9 102.4 Up 01:36:25 - 02:06:25 867
Oliver 01:51:26 -16.9 AT Up 34.0 102.3 Up 01:36:26 - 02:06:26 857
Anarchist Mountain Observatory 01:51:26 -17.0 AT Up 34.1 102.4 Up 01:36:26 - 02:06:26 841
Oroville 01:51:27 -16.9 AT Up 34.1 102.2 Up 01:36:27 - 02:06:27 839
Tonasket 01:51:28 -16.9 AT Up 34.2 102.1 Up 01:36:28 - 02:06:28 825
Okanogan 01:51:30 -16.7 AT Up 34.1 101.8 Up 01:36:30 - 02:06:30 810
Brewster 01:51:31 -16.5 AT Up 34.1 101.4 Up 01:36:31 - 02:06:31 799
Manson/Chelan 01:51:32 -16.2 AT Up 33.9 101.0 Up 01:36:32 - 02:06:32 798
Entiat 01:51:33 -16.1 AT Up 33.9 100.8 Up 01:36:33 - 02:06:33 787
Wenatchee 01:51:34 -15.9 AT Up 33.8 100.5 Up 01:36:34 - 02:06:34 774
Ellensburg 01:51:37 -15.7 AT Up 33.8 100.1 Up 01:36:37 - 02:06:37 756
Yakima 01:51:38 -15.5 AT Up 33.8 99.8 Up 01:36:38 - 02:06:38 731
Toppenish/White Swan 01:51:39 -15.6 AT Up 34.0 99.8 Up 01:36:39 - 02:06:39 713
Goldendale 01:51:41 -15.1 AT Up 33.8 99.1 Up 01:36:41 - 02:06:41 691
The Dalles 01:51:43 -14.8 AT Up 33.6 98.7 Up 01:36:43 - 02:06:43 689
Pasco 01:51:37 -16.4 AT Up 34.9 100.7 Up 01:36:37 - 02:06:37 666
Maupin 01:51:44 -14.8 AT Up 33.7 98.5 Up 01:36:44 - 02:06:44 659
George/Umatilla 01:51:39 -16.2 AT Up 34.8 100.3 Up 01:36:39 - 02:06:39 651
PNWRO 01:51:38 -16.5 AT Up 35.1 100.8 Up 01:36:38 - 02:06:38 643
Madras/Culver 01:51:47 -14.6 AT Up 33.8 98.1 Up 01:36:47 - 02:06:47 625
Sisters 01:51:49 -14.2 AT Up 33.5 97.5 Up 01:36:49 - 02:06:49 618
Redmond 01:51:48 -14.4 AT Up 33.8 97.8 Up 01:36:48 - 02:06:48 604
Bend 01:51:49 -14.3 AT Up 33.7 97.6 Up 01:36:49 - 02:06:49 594
Oregon Observatory 01:51:50 -14.1 AT Up 33.7 97.4 Up 01:36:50 - 02:06:50 587
La Pine/Gilchrist 01:51:51 -14.0 AT Up 33.7 97.2 Up 01:36:51 - 02:06:51 576
North Lake 01:51:52 -14.3 AT Up 34.1 97.4 Up 01:36:52 - 02:06:52 528
Chiloquin 01:51:56 -13.4 AT Up 33.5 96.2 Up 01:36:56 - 02:06:56 514
Klamath Falls 01:51:57 -13.4 AT Up 33.6 96.0 Up 01:36:57 - 02:06:57 488
Paisley 01:51:54 -14.4 AT Up 34.5 97.3 Up 01:36:54 - 02:06:54 479
Tulelake 01:51:58 -13.5 AT Up 33.9 96.1 Up 01:36:58 - 02:06:58 460
Lakeview 01:51:55 -14.4 AT Up 34.7 97.1 Up 01:36:55 - 02:06:55 438
Fall River/Burney 01:52:01 -13.3 AT Up 34.1 95.5 Up 01:37:01 - 02:07:01 395
Cedarville 01:51:58 -14.3 AT Up 34.9 96.7 Up 01:36:58 - 02:06:58 388
Susanville 01:52:02 -13.6 AT Up 34.7 95.6 Up 01:37:02 - 02:07:02 326
Greenville 01:52:04 -13.3 AT Up 34.5 95.2 Up 01:37:04 - 02:07:04 317
Gimple 01:52:04 -13.3 AT Up 34.6 95.3 Up 01:37:04 - 02:07:04 314
Quincy 01:52:05 -13.2 AT Up 34.5 95.1 Up 01:37:05 - 02:07:05 303
Portola 01:52:05 -13.5 AT Up 34.9 95.4 Up 01:37:05 - 02:07:05 277
Reno 01:52:05 -13.9 AT Up 35.4 95.6 Up 01:37:05 - 02:07:05 236
Carson City 01:52:06 -13.8 AT Up 35.5 95.4 Up 01:37:06 - 02:07:06 209
Gardnerville 01:52:07 -13.8 AT Up 35.5 95.2 Up 01:37:07 - 02:07:07 190
Yerington 01:52:06 -14.2 AT Up 36.0 95.7 Up 01:37:06 - 02:07:06 173
Hawthorne 01:52:06 -14.5 AT Up 36.4 95.7 Up 01:37:06 - 02:07:06 121
Lee Vining 01:52:10 -13.9 AT Up 36.1 95.0 Up 01:37:10 - 02:07:10 96
Tonopah 01:52:06 -15.4 AT Up 37.6 96.3 Up 01:37:06 - 02:07:06 36
Bishop 01:52:10 -14.3 AT Up 36.7 95.0 Up 01:37:10 - 02:07:10 26
Lone Pine 01:52:13 -14.3 AT Up 37.1 94.7 Up 01:37:13 - 02:07:13 -43
CPSLO 01:52:22 -11.9 NT Up 35.1 92.1 Up 01:37:22 - 02:07:22 -48
Beatty 01:52:09 -15.4 AT Up 38.1 95.7 Up 01:37:09 - 02:07:09 -68
Indian Springs 01:52:08 -16.1 AT Up 39.0 96.2 Up 01:37:08 - 02:07:08 -132
Henderson 01:52:09 -16.5 AT Up 39.6 96.2 Up 01:37:09 - 02:07:09 -199
Wildwood 01:52:22 -13.1 AT Up 36.8 92.5 Up 01:37:22 - 02:07:22 -218
Niwot 01:51:33 -24.8 Dark Up 46.2 107.3 Up 01:36:33 - 02:06:33 -233
Searchlight/Boulder City 01:52:10 -16.3 AT Up 39.7 95.8 Up 01:37:10 - 02:07:10 -246
Laughlin/Bullhead City 01:52:11 -16.5 AT Up 40.0 95.8 Up 01:37:11 - 02:07:11 -283
Patrick 01:52:09 -17.1 AT Up 40.6 96.4 Up 01:37:09 - 02:07:09 -289
Kingman/Dolan Springs 01:52:10 -16.9 AT Up 40.4 96.1 Up 01:37:10 - 02:07:10 -300
Mohave Valley 01:52:12 -16.5 AT Up 40.1 95.6 Up 01:37:12 - 02:07:12 -305
Idyllwild 01:52:20 -14.4 AT Up 38.4 93.3 Up 01:37:20 - 02:07:20 -317
DCO 01:52:08 -17.6 AT Up 41.2 96.6 Up 01:37:08 - 02:07:08 -340
Lake Havasu City 01:52:13 -16.5 AT Up 40.3 95.4 Up 01:37:13 - 02:07:13 -346
Parker 01:52:14 -16.5 AT Up 40.4 95.1 Up 01:37:14 - 02:07:14 -375
Blythe 01:52:16 -16.1 AT Up 40.2 94.5 Up 01:37:16 - 02:07:16 -406
Calipatria 01:52:20 -15.2 AT Up 39.4 93.5 Up 01:37:20 - 02:07:20 -411
Yuma 01:52:20 -15.8 AT Up 40.2 93.7 Up 01:37:20 - 02:07:20 -480

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 15VA164, (2018/12/19 01:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.09  31
44Zet Per      03:54:07.9 +31:53:01  2.8 14.50  29
PPM 119253     03:39:25.8 +16:32:11  6.2  1.47  18
PPM 119209     03:36:16.7 +17:48:43  8.5  0.23  17
PPM 119225     03:37:03.6 +17:50:59 10.0  0.06  18
15VA164        03:37:10.6 +17:54:01 12.3        18
Positions are for J2000

Event circumstances last updated at 2018/10/19 22:11:50 UT

Marc W. Buie, Southwest Research Institute

RECON