RECON: TNO occultation with 03QW113

Event between 03QW113 and star UC4-440-000050 with event index number of 201108

Geocentric closest approach at 2019/07/21 11:25:44 UTC

J2000 position of star is 00:01:58.5 -02:07:24
Equinox of date position of star is 00:02:53.6 -02:01:24
Stellar brightness R=15.2, use SENSEUP=128
Star is 11 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 30.8 AU from the Sun and 30.3 AU from the Earth.
The TNO is moving 8.2 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 1311 seconds.
The 1-sigma cross-track error in the shadow position is 4787 km.
The sky-plane scale is 21953.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 25.1 sec chord
Diameter=84.1 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 03QW113, (2019/07/21 11:26UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.6 -29:31:05  1.2 31.46  22
Algenib        00:14:14.7 +15:17:32  2.8 17.53  27
29 Psc         00:02:49.6 -02:55:07  5.4  0.91  11
PPM 208213     00:00:49.4 -02:00:14  8.5  0.54  11
PPM 181780     00:03:17.4 -02:01:50  9.6  0.08  11
03QW113        00:02:58.6 -02:00:52 15.2        11
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 0.7 sigma about the mid-time.
The median site spacing is 73.3 km RECON observability=0.1 and success probability=3.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:21:16 -7.9 CT Up 38.1 166.4 Up 11:06:16 - 11:36:16 -984
Tonasket 11:21:17 -8.1 CT Up 38.3 166.4 Up 11:06:17 - 11:36:17 -996
Okanogan 11:21:20 -8.4 CT Up 38.6 166.1 Up 11:06:20 - 11:36:20 -1007
Manson/Chelan 11:21:27 -9.0 CT Up 39.0 165.3 Up 11:06:27 - 11:36:27 -1008
Brewster 11:21:23 -8.7 CT Up 38.9 165.8 Up 11:06:23 - 11:36:23 -1012
Entiat 11:21:30 -9.2 CT Up 39.2 165.2 Up 11:06:30 - 11:36:30 -1016
Wenatchee 11:21:32 -9.4 CT Up 39.5 165.1 Up 11:06:32 - 11:36:32 -1025
Ellensburg 11:21:36 -9.8 CT Up 39.8 164.7 Up 11:06:36 - 11:36:36 -1037
Yakima 11:21:39 -10.1 CT Up 40.2 164.6 Up 11:06:39 - 11:36:39 -1057
Toppenish/White Swan 11:21:39 -10.1 CT Up 40.4 164.8 Up 11:06:39 - 11:36:39 -1075
The Dalles 11:21:50 -11.0 CT Up 41.1 163.6 Up 11:06:50 - 11:36:50 -1083
Goldendale 11:21:45 -10.7 CT Up 40.9 164.1 Up 11:06:45 - 11:36:45 -1087
Maupin 11:21:52 -11.3 CT Up 41.5 163.7 Up 11:06:52 - 11:36:52 -1110
Pasco 11:21:30 -9.6 CT Up 40.8 166.4 Up 11:06:30 - 11:36:30 -1135
Sisters 11:22:01 -12.1 AT Up 42.2 162.8 Up 11:07:01 - 11:37:01 -1136
Madras/Culver 11:21:56 -11.7 CT Up 42.0 163.5 Up 11:06:56 - 11:36:56 -1137
George/Umatilla 11:21:34 -9.9 CT Up 41.1 166.0 Up 11:06:34 - 11:36:34 -1144
Redmond 11:21:59 -12.0 CT Up 42.3 163.4 Up 11:06:59 - 11:36:59 -1155
PNWRO 11:21:30 -9.7 CT Up 41.1 166.6 Up 11:06:30 - 11:36:30 -1158
Bend 11:22:01 -12.2 AT Up 42.5 163.1 Up 11:07:01 - 11:37:01 -1160
Oregon Observatory 11:22:03 -12.4 AT Up 42.7 162.9 Up 11:07:03 - 11:37:03 -1164
La Pine/Gilchrist 11:22:05 -12.5 AT Up 42.8 162.8 Up 11:07:05 - 11:37:05 -1173
Chiloquin 11:22:15 -13.5 AT Up 43.8 162.1 Up 11:07:15 - 11:37:15 -1219
North Lake 11:22:03 -12.5 AT Up 43.4 163.5 Up 11:07:03 - 11:37:03 -1223
Klamath Falls 11:22:17 -13.7 AT Up 44.2 162.1 Up 11:07:17 - 11:37:17 -1242
Paisley 11:22:04 -12.7 AT Up 44.0 163.8 Up 11:07:04 - 11:37:04 -1270
Tulelake 11:22:17 -13.7 AT Up 44.5 162.4 Up 11:07:17 - 11:37:17 -1271
Lakeview 11:22:06 -13.0 AT Up 44.5 164.0 Up 11:07:06 - 11:37:06 -1308
Fall River/Burney 11:22:22 -14.3 AT Up 45.4 162.3 Up 11:07:22 - 11:37:22 -1328
Cedarville 11:22:09 -13.3 AT Up 45.2 164.0 Up 11:07:09 - 11:37:09 -1354
Susanville 11:22:20 -14.3 AT Up 46.2 163.1 Up 11:07:20 - 11:37:20 -1399
Greenville 11:22:25 -14.7 AT Up 46.4 162.6 Up 11:07:25 - 11:37:25 -1402
Gimple 11:22:24 -14.6 AT Up 46.4 162.7 Up 11:07:24 - 11:37:24 -1406
Quincy 11:22:26 -14.8 AT Up 46.6 162.6 Up 11:07:26 - 11:37:26 -1414
Portola 11:22:23 -14.6 AT Up 46.8 163.2 Up 11:07:23 - 11:37:23 -1444
Reno 11:22:19 -14.5 AT Up 47.2 164.0 Up 11:07:19 - 11:37:19 -1490
Carson City 11:22:21 -14.7 AT Up 47.5 164.0 Up 11:07:21 - 11:37:21 -1513
Gardnerville 11:22:22 -14.8 AT Up 47.8 164.0 Up 11:07:22 - 11:37:22 -1531
Yerington 11:22:18 -14.5 AT Up 47.8 164.8 Up 11:07:18 - 11:37:18 -1555
Hawthorne 11:22:16 -14.5 AT Up 48.4 165.4 Up 11:07:16 - 11:37:16 -1609
Lee Vining 11:22:24 -15.1 AT Up 48.8 164.6 Up 11:07:24 - 11:37:24 -1622
Bishop 11:22:21 -15.1 AT Up 49.6 165.5 Up 11:07:21 - 11:37:21 -1696
Tonopah 11:22:07 -14.0 AT Up 49.1 167.4 Up 11:07:07 - 11:37:07 -1707
CPSLO 11:22:55 -17.7 AT Up 51.1 161.5 Up 11:07:55 - 11:37:55 -1721
Lone Pine 11:22:24 -15.4 AT Up 50.4 165.8 Up 11:07:24 - 11:37:24 -1762
Beatty 11:22:10 -14.4 AT Up 50.3 167.8 Up 11:07:10 - 11:37:10 -1805
Indian Springs 11:22:03 -14.0 AT Up 50.8 169.3 Up 11:07:03 - 11:37:03 -1880
Wildwood 11:22:45 -17.3 AT Up 52.7 164.3 Up 11:07:45 - 11:37:45 -1905
Henderson 11:22:00 -13.9 AT Up 51.4 170.3 Up 11:07:00 - 11:37:00 -1950
Searchlight/Boulder City 11:22:03 -14.2 AT Up 52.0 170.3 Up 11:07:03 - 11:37:03 -1993
Idyllwild 11:22:31 -16.4 AT Up 53.4 167.1 Up 11:07:31 - 11:37:31 -2025
Laughlin/Bullhead City 11:22:03 -14.2 AT Up 52.3 170.8 Up 11:07:03 - 11:37:03 -2031
Patrick 11:21:55 -13.6 AT Up 52.2 171.9 Up 11:06:55 - 11:36:55 -2049
Mohave Valley 11:22:04 -14.3 AT Up 52.6 170.8 Up 11:07:04 - 11:37:04 -2051
Kingman/Dolan Springs 11:21:58 -13.8 AT Up 52.4 171.6 Up 11:06:58 - 11:36:58 -2056
Lake Havasu City 11:22:04 -14.4 AT Up 53.0 171.1 Up 11:07:04 - 11:37:04 -2091
DCO 11:21:50 -13.3 AT Up 52.6 173.0 Up 11:06:50 - 11:36:50 -2107
Parker 11:22:06 -14.6 AT Up 53.4 171.1 Up 11:07:06 - 11:37:06 -2118
Calipatria 11:22:24 -16.0 AT Up 54.2 168.9 Up 11:07:24 - 11:37:24 -2128
Blythe 11:22:12 -15.1 AT Up 53.9 170.5 Up 11:07:12 - 11:37:12 -2140
Niwot 11:20:14 -5.5 CT Up 47.7 185.0 Up 11:05:14 - 11:35:14 -2142
Yuma 11:22:18 -15.7 AT Up 54.8 170.3 Up 11:07:18 - 11:37:18 -2205

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 03QW113, (2019/07/21 11:26UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 31.46  22
Algenib        00:13:14.2 +15:11:01  2.8 17.53  27
29 Psc         00:01:49.5 -03:01:39  5.4  0.91  11
PPM 208213     23:59:49.2 -02:06:46  8.5  0.54  11
PPM 181780     00:02:17.3 -02:08:22  9.6  0.08  11
03QW113        00:01:58.5 -02:07:24 15.2        11
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:09:09 UT

Marc W. Buie, Southwest Research Institute

RECON