RECON: TNO occultation with 13NL24

Event between 13NL24 and star GA0780:22029697 with event index number of 357230

Geocentric closest approach at 2019/09/04 07:10:47 UTC

J2000 position of star is 22:33:31.6 -11:22:20
Equinox of date position of star is 22:34:32.2 -11:16:24
Stellar brightness G=15.6, use SENSEUP=128
Star is 107 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 26.7 AU from the Sun and 25.7 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 59 seconds.
The 1-sigma cross-track error in the shadow position is 1067 km.
The sky-plane scale is 18627.1 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=146.6 km assuming a 5% albedo -- 6.0 sec chord
Diameter=59.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13NL24, (2019/09/04 07:11UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:44.0 -29:31:03  1.2 19.10 106
50 Aqr         22:25:30.2 -13:25:45  5.8  3.09 104
PPM 240416     22:33:29.0 -10:50:20  8.4  0.51 107
PPM 240437     22:34:39.3 -11:25:59  9.3  0.16 107
13NL24         22:34:34.1 -11:16:13 15.6       108
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 5.0 sigma about the mid-time.
The median site spacing is 12.8 km RECON observability=1.0 and success probability=28.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 07:09:47 -31.9 Dark Down 28.4 171.6 Low 07:04:21 - 07:15:13 19
Kelowna 07:09:46 -31.9 Dark Down 28.4 172.0 Low 07:04:20 - 07:15:12 13
Penticton 07:09:47 -32.3 Dark Down 28.7 171.8 Low 07:04:21 - 07:15:13 0
Okanagan Falls 07:09:47 -32.4 Dark Down 28.9 171.7 Low 07:04:21 - 07:15:13 -9
Oliver 07:09:47 -32.6 Dark Down 29.1 171.7 Low 07:04:21 - 07:15:13 -17
Anarchist Mountain Observatory 07:09:47 -32.8 Dark Down 29.3 171.9 Low 07:04:21 - 07:15:13 -30
Oroville 07:09:47 -32.9 Dark Down 29.4 171.8 Low 07:04:21 - 07:15:13 -32
Tonasket 07:09:47 -33.1 Dark Down 29.6 171.8 Low 07:04:21 - 07:15:13 -43
Okanogan 07:09:48 -33.4 Dark Down 29.9 171.6 Low 07:04:22 - 07:15:14 -56
Brewster 07:09:49 -33.6 Dark Down 30.2 171.4 Up 07:04:23 - 07:15:15 -65
Manson/Chelan 07:09:51 -33.8 Dark Down 30.3 171.0 Up 07:04:25 - 07:15:17 -66
Entiat 07:09:51 -34.0 Dark Down 30.5 170.9 Up 07:04:25 - 07:15:17 -76
Wenatchee 07:09:52 -34.2 Dark Down 30.8 170.7 Up 07:04:26 - 07:15:18 -86
Ellensburg 07:09:53 -34.6 Dark Down 31.2 170.4 Up 07:04:27 - 07:15:19 -102
Yakima 07:09:54 -34.9 Dark Down 31.6 170.4 Up 07:04:28 - 07:15:20 -122
Toppenish/White Swan 07:09:53 -35.2 Dark Down 31.8 170.6 Up 07:04:27 - 07:15:19 -138
Goldendale 07:09:55 -35.6 Dark Down 32.3 170.0 Up 07:04:29 - 07:15:21 -156
The Dalles 07:09:57 -35.8 Dark Down 32.5 169.6 Up 07:04:31 - 07:15:23 -159
Pasco 07:09:50 -35.5 Dark Down 32.0 172.0 Up 07:04:24 - 07:15:16 -175
Maupin 07:09:57 -36.2 Dark Down 32.9 169.7 Up 07:04:31 - 07:15:23 -184
George/Umatilla 07:09:51 -35.8 Dark Down 32.4 171.7 Up 07:04:25 - 07:15:17 -187
PNWRO 07:09:49 -35.8 Dark Down 32.3 172.2 Up 07:04:23 - 07:15:15 -194
Madras/Culver 07:09:58 -36.7 Dark Down 33.4 169.5 Up 07:04:32 - 07:15:24 -213
Sisters 07:10:00 -36.9 Dark Down 33.7 169.0 Up 07:04:34 - 07:15:26 -220
Redmond 07:09:59 -37.1 Dark Down 33.8 169.4 Up 07:04:33 - 07:15:25 -231
Bend 07:09:59 -37.2 Dark Down 34.0 169.3 Up 07:04:33 - 07:15:25 -239
Oregon Observatory 07:10:00 -37.4 Dark Down 34.1 169.1 Up 07:04:34 - 07:15:26 -246
La Pine/Gilchrist 07:10:01 -37.6 Dark Down 34.3 169.0 Up 07:04:35 - 07:15:27 -256
North Lake 07:09:59 -38.1 Dark Down 34.8 169.6 Up 07:04:33 - 07:15:25 -295
Chiloquin 07:10:03 -38.5 Dark Down 35.3 168.4 Up 07:04:37 - 07:15:29 -310
Klamath Falls 07:10:04 -38.9 Dark Down 35.7 168.5 Up 07:04:38 - 07:15:30 -332
Paisley 07:09:59 -38.7 Dark Down 35.4 170.0 Up 07:04:33 - 07:15:25 -336
Tulelake 07:10:03 -39.2 Dark Down 36.0 168.8 Up 07:04:37 - 07:15:29 -355
Lakeview 07:09:59 -39.2 Dark Down 35.9 170.2 Up 07:04:33 - 07:15:25 -370
Fall River/Burney 07:10:04 -40.1 Dark Down 36.9 168.8 Up 07:04:38 - 07:15:30 -411
Cedarville 07:09:59 -39.9 Dark Down 36.6 170.3 Up 07:04:33 - 07:15:25 -414
Susanville 07:10:03 -40.9 Dark Down 37.6 169.6 Up 07:04:37 - 07:15:29 -468
Greenville 07:10:04 -41.1 Dark Down 37.9 169.2 Up 07:04:38 - 07:15:30 -478
Gimple 07:10:04 -41.1 Dark Down 37.9 169.3 Up 07:04:38 - 07:15:30 -480
Quincy 07:10:04 -41.3 Dark Down 38.1 169.2 Up 07:04:38 - 07:15:30 -490
Portola 07:10:03 -41.5 Dark Down 38.3 169.7 Up 07:04:37 - 07:15:29 -511
Reno 07:10:01 -41.9 Dark Down 38.6 170.5 Up 07:04:35 - 07:15:27 -545
Carson City 07:10:01 -42.2 Dark Down 39.0 170.5 Up 07:04:35 - 07:15:27 -568
Gardnerville 07:10:01 -42.5 Dark Down 39.2 170.5 Up 07:04:35 - 07:15:27 -585
Yerington 07:09:59 -42.5 Dark Down 39.2 171.2 Up 07:04:33 - 07:15:25 -598
Hawthorne 07:09:58 -43.1 Dark Down 39.7 171.8 Up 07:04:32 - 07:15:24 -642
Lee Vining 07:10:01 -43.5 Dark Down 40.2 171.2 Up 07:04:35 - 07:15:27 -665
Tonopah 07:09:54 -43.8 Dark Down 40.3 173.6 Up 07:04:28 - 07:15:20 -712
Bishop 07:09:59 -44.3 Dark Down 40.9 172.0 Up 07:04:33 - 07:15:25 -725
Lone Pine 07:09:59 -45.1 Dark Down 41.7 172.3 Up 07:04:33 - 07:15:25 -785
CPSLO 07:10:10 -45.7 Dark Down 42.7 168.8 Up 07:04:44 - 07:15:36 -800
Beatty 07:09:54 -45.0 Dark Down 41.5 174.0 Up 07:04:28 - 07:15:20 -803
Indian Springs 07:09:50 -45.5 Dark Down 41.9 175.4 Up 07:04:24 - 07:15:16 -857
Henderson 07:09:48 -46.2 Dark Down 42.5 176.3 Up 07:04:22 - 07:15:14 -914
Niwot 07:09:09 -42.6 Dark Down 38.1 188.6 Up 07:03:43 - 07:14:35 -932
SwRI 07:09:10 -42.7 Dark Down 38.2 188.5 Up 07:03:44 - 07:14:36 -937
Wildwood 07:10:04 -47.4 Dark Down 44.1 171.3 Up 07:04:38 - 07:15:30 -944
Searchlight/Boulder City 07:09:48 -46.7 Dark Down 43.1 176.3 Up 07:04:22 - 07:15:14 -956
Laughlin/Bullhead City 07:09:48 -47.1 Dark Down 43.4 176.8 Up 07:04:22 - 07:15:14 -988
Patrick 07:09:45 -46.9 Dark Down 43.2 177.7 Up 07:04:19 - 07:15:11 -992
Kingman/Dolan Springs 07:09:46 -47.1 Dark Down 43.4 177.5 Up 07:04:20 - 07:15:12 -1002
Mohave Valley 07:09:48 -47.3 Dark Down 43.7 176.8 Up 07:04:22 - 07:15:14 -1007
Idyllwild 07:09:58 -48.1 Dark Down 44.7 173.8 Up 07:04:32 - 07:15:24 -1025
DCO 07:09:43 -47.3 Dark Down 43.5 178.7 Up 07:04:17 - 07:15:09 -1035
Lake Havasu City 07:09:48 -47.8 Dark Down 44.1 177.1 Up 07:04:22 - 07:15:14 -1043
Parker 07:09:48 -48.1 Dark Down 44.4 177.1 Up 07:04:22 - 07:15:14 -1070
Blythe 07:09:50 -48.6 Dark Down 45.0 176.7 Up 07:04:24 - 07:15:16 -1099
Calipatria 07:09:54 -48.9 Dark Down 45.4 175.4 Up 07:04:28 - 07:15:20 -1106
Yuma 07:09:51 -49.5 Dark Down 45.9 176.6 Up 07:04:25 - 07:15:17 -1165

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 13NL24, (2019/09/04 07:11UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 19.10 106
50 Aqr         22:24:27.1 -13:31:46  5.8  3.09 104
PPM 240416     22:32:26.6 -10:56:26  8.4  0.51 107
PPM 240437     22:33:36.8 -11:32:06  9.3  0.16 107
13NL24         22:33:31.6 -11:22:20 15.6       107
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:44:39 UT

Marc W. Buie, Southwest Research Institute

RECON