RECON: TNO occultation with 13UG17

Event between 13UG17 and star UC4-487-002189 with event index number of 220027

Geocentric closest approach at 2019/09/16 08:49:13 UTC

J2000 position of star is 01:30:38.7 +07:16:27
Equinox of date position of star is 01:31:35.0 +07:21:58
Stellar brightness R=11.9, use SENSEUP=16
Star is 7 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=24.5

[RECON map]
TNO is 41.4 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 483 seconds.
The 1-sigma cross-track error in the shadow position is 5149 km.
The sky-plane scale is 29405.8 km/arcsec.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 6.3 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 13UG17, (2019/09/16 08:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.2 +16:32:51  0.8 46.15  52
6Bet Ari       01:55:44.0 +20:54:13  2.6 14.73  22
PPM 144653     01:30:05.0 +07:23:43  6.4  0.40   7
PPM 144661     01:30:25.0 +07:08:34  9.5  0.39   7
PPM 144682     01:31:37.7 +07:09:54 11.0  0.21   7
13UG17         01:31:40.6 +07:22:31 11.9         7
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 1.9 sigma about the mid-time.
The median site spacing is 17.8 km RECON observability=1.0 and success probability=7.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:48:37 -37.0 Dark Up 46.5 158.2 Up 08:33:37 - 09:03:37 111
Tonasket 08:48:37 -37.2 Dark Up 46.7 158.1 Up 08:33:37 - 09:03:37 95
Okanogan 08:48:38 -37.5 Dark Up 47.0 157.8 Up 08:33:38 - 09:03:38 77
Brewster 08:48:40 -37.8 Dark Up 47.2 157.4 Up 08:33:40 - 09:03:40 65
Manson/Chelan 08:48:42 -38.1 Dark Up 47.3 156.8 Up 08:33:42 - 09:03:42 63
Entiat 08:48:42 -38.3 Dark Up 47.5 156.6 Up 08:33:42 - 09:03:42 50
Wenatchee 08:48:43 -38.6 Dark Up 47.7 156.4 Up 08:33:43 - 09:03:43 36
Ellensburg 08:48:45 -39.0 Dark Up 48.0 155.9 Up 08:33:45 - 09:03:45 15
Yakima 08:48:46 -39.4 Dark Up 48.3 155.7 Up 08:33:46 - 09:03:46 -13
Toppenish/White Swan 08:48:46 -39.6 Dark Up 48.6 155.8 Up 08:33:46 - 09:03:46 -33
Goldendale 08:48:49 -40.2 Dark Up 49.0 155.0 Up 08:33:49 - 09:03:49 -57
The Dalles 08:48:51 -40.5 Dark Up 49.1 154.3 Up 08:33:51 - 09:03:51 -60
Pasco 08:48:42 -39.4 Dark Up 49.0 157.6 Up 08:33:42 - 09:03:42 -83
Maupin 08:48:52 -40.9 Dark Up 49.5 154.3 Up 08:33:52 - 09:03:52 -93
George/Umatilla 08:48:44 -39.8 Dark Up 49.3 157.1 Up 08:33:44 - 09:03:44 -99
PNWRO 08:48:42 -39.6 Dark Up 49.3 157.8 Up 08:33:42 - 09:03:42 -108
Madras/Culver 08:48:53 -41.4 Dark Up 50.0 154.0 Up 08:33:53 - 09:03:53 -131
Sisters 08:48:56 -41.8 Dark Up 50.1 153.1 Up 08:33:56 - 09:03:56 -139
Redmond 08:48:54 -41.8 Dark Up 50.3 153.7 Up 08:33:54 - 09:03:54 -154
Bend 08:48:55 -42.0 Dark Up 50.4 153.4 Up 08:33:55 - 09:03:55 -165
Oregon Observatory 08:48:56 -42.2 Dark Up 50.5 153.1 Up 08:33:56 - 09:03:56 -173
La Pine/Gilchrist 08:48:57 -42.4 Dark Up 50.7 152.9 Up 08:33:57 - 09:03:57 -185
North Lake 08:48:56 -42.7 Dark Up 51.3 153.6 Up 08:33:56 - 09:03:56 -238
Chiloquin 08:49:01 -43.5 Dark Up 51.6 151.8 Up 08:34:01 - 09:04:01 -254
Klamath Falls 08:49:02 -43.8 Dark Up 51.9 151.7 Up 08:34:02 - 09:04:02 -282
Paisley 08:48:56 -43.1 Dark Up 51.9 153.8 Up 08:33:56 - 09:03:56 -291
Tulelake 08:49:01 -44.0 Dark Up 52.2 152.0 Up 08:34:01 - 09:04:01 -312
Lakeview 08:48:57 -43.6 Dark Up 52.4 153.8 Up 08:33:57 - 09:03:57 -335
Fall River/Burney 08:49:04 -44.9 Dark Up 53.1 151.5 Up 08:34:04 - 09:04:04 -383
Cedarville 08:48:58 -44.1 Dark Up 53.1 153.7 Up 08:33:58 - 09:03:58 -391
Susanville 08:49:03 -45.3 Dark Up 53.9 152.3 Up 08:34:03 - 09:04:03 -458
Greenville 08:49:04 -45.6 Dark Up 54.0 151.7 Up 08:34:04 - 09:04:04 -468
Gimple 08:49:04 -45.6 Dark Up 54.1 151.8 Up 08:34:04 - 09:04:04 -471
Quincy 08:49:05 -45.8 Dark Up 54.2 151.5 Up 08:34:05 - 09:04:05 -484
Portola 08:49:04 -45.8 Dark Up 54.5 152.2 Up 08:34:04 - 09:04:04 -511
Reno 08:49:02 -45.9 Dark Up 55.0 153.1 Up 08:34:02 - 09:04:02 -555
Carson City 08:49:03 -46.3 Dark Up 55.3 152.9 Up 08:34:03 - 09:04:03 -584
Gardnerville 08:49:04 -46.5 Dark Up 55.5 152.8 Up 08:34:04 - 09:04:04 -605
Yerington 08:49:01 -46.3 Dark Up 55.7 153.8 Up 08:34:01 - 09:04:01 -623
Hawthorne 08:49:00 -46.5 Dark Up 56.3 154.3 Up 08:34:00 - 09:04:00 -679
Lee Vining 08:49:04 -47.2 Dark Up 56.6 153.2 Up 08:34:04 - 09:04:04 -706
Tonopah 08:48:56 -46.5 Dark Up 57.2 156.4 Up 08:33:56 - 09:03:56 -769
Bishop 08:49:03 -47.5 Dark Up 57.4 154.0 Up 08:34:03 - 09:04:03 -781
Lone Pine 08:49:04 -48.1 Dark Up 58.2 154.0 Up 08:34:04 - 09:04:04 -855
CPSLO 08:49:16 -50.1 Dark Up 58.4 148.6 Up 08:34:16 - 09:04:16 -862
Beatty 08:48:58 -47.4 Dark Up 58.4 156.5 Up 08:33:58 - 09:03:58 -880
Indian Springs 08:48:55 -47.4 Dark Up 59.0 158.3 Up 08:33:55 - 09:03:55 -948
Henderson 08:48:53 -47.6 Dark Up 59.7 159.2 Up 08:33:53 - 09:03:53 -1019
Niwot 08:48:09 -40.0 Dark Up 57.2 178.6 Up 08:33:09 - 09:03:09 -1038
Wildwood 08:49:12 -50.6 Dark Up 60.3 151.2 Up 08:34:12 - 09:04:12 -1042
Searchlight/Boulder City 08:48:55 -48.1 Dark Up 60.3 159.0 Up 08:33:55 - 09:03:55 -1070
Laughlin/Bullhead City 08:48:54 -48.2 Dark Up 60.6 159.5 Up 08:33:54 - 09:03:54 -1109
Patrick 08:48:50 -47.7 Dark Up 60.6 161.0 Up 08:33:50 - 09:03:50 -1115
Kingman/Dolan Springs 08:48:52 -48.0 Dark Up 60.8 160.5 Up 08:33:52 - 09:03:52 -1127
Mohave Valley 08:48:54 -48.4 Dark Up 60.9 159.3 Up 08:33:54 - 09:03:54 -1132
Idyllwild 08:49:05 -50.3 Dark Up 61.3 154.4 Up 08:34:05 - 09:04:05 -1147
DCO 08:48:49 -47.7 Dark Up 61.1 162.2 Up 08:33:49 - 09:03:49 -1169
Lake Havasu City 08:48:54 -48.7 Dark Up 61.3 159.5 Up 08:33:54 - 09:03:54 -1176
Parker 08:48:55 -49.0 Dark Up 61.7 159.4 Up 08:33:55 - 09:03:55 -1207
Blythe 08:48:57 -49.5 Dark Up 62.1 158.4 Up 08:33:57 - 09:03:57 -1241
Calipatria 08:49:02 -50.3 Dark Up 62.2 156.2 Up 08:34:02 - 09:04:02 -1246
Yuma 08:49:00 -50.4 Dark Up 62.9 157.7 Up 08:34:00 - 09:04:00 -1319

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 13UG17, (2019/09/16 08:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 46.15  52
6Bet Ari       01:54:38.5 +20:48:27  2.6 14.73  22
PPM 144653     01:29:03.1 +07:17:38  6.4  0.40   7
PPM 144661     01:29:23.1 +07:02:29  9.5  0.39   7
PPM 144682     01:30:35.9 +07:03:50 11.0  0.21   7
13UG17         01:30:38.7 +07:16:27 11.9         7
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:17:46 UT

Marc W. Buie, Southwest Research Institute

RECON