RECON: TNO occultation with 470309

Event between (470309) 07JK43 and star GA0920:05365261 with event index number of 190596

Geocentric closest approach at 2019/05/08 10:24:06 UTC

J2000 position of star is 17:39:15.3 +03:18:56
Equinox of date position of star is 17:40:10.6 +03:18:23
Stellar brightness G=15.9, use SENSEUP=128
Star is 154 degrees from the moon. Moon is 14% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 24.5 AU from the Sun and 23.8 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is 1615 km.
The sky-plane scale is 17230.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 11.1 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 

Star training set for 470309, (2019/05/08 10:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.8 -26:28:24  0.9 34.21 158
60Bet Oph      17:44:25.8 +04:33:38  2.8  1.64 153
PPM 164135     17:32:19.7 +02:42:42  6.5  2.06 154
PPM 164378     17:40:29.2 +03:22:59  8.0  0.10 154
470309         17:40:13.3 +03:18:22 15.9       154
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 16.6 km RECON observability=1.0 and success probability=20.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 10:25:16 -15.1 AT Down 51.6 200.0 Up 10:18:24 - 10:32:07 209
Penticton 10:26:21 -15.4 AT Down 43.8 177.5 Up 10:19:29 - 10:33:12 115
Oroville 10:26:19 -15.9 AT Down 44.4 177.6 Up 10:19:28 - 10:33:11 82
Tonasket 10:26:19 -16.1 AT Down 44.6 177.6 Up 10:19:27 - 10:33:10 68
Okanogan 10:26:19 -16.4 AT Down 44.9 177.4 Up 10:19:27 - 10:33:10 40
Brewster 10:26:18 -16.7 AT Down 45.2 177.1 Up 10:19:27 - 10:33:10 14
Manson/Chelan 10:26:19 -17.0 AT Down 45.4 176.6 Up 10:19:28 - 10:33:11 -18
Entiat 10:26:19 -17.2 AT Down 45.6 176.4 Up 10:19:27 - 10:33:10 -35
Wenatchee 10:26:19 -17.4 AT Down 45.8 176.3 Up 10:19:27 - 10:33:10 -56
Pasco 10:26:13 -17.9 AT Down 47.0 177.9 Up 10:19:21 - 10:33:04 -78
PNWRO 10:26:12 -18.0 AT Down 47.3 178.2 Up 10:19:20 - 10:33:03 -84
Ellensburg 10:26:18 -17.9 AT Down 46.3 175.9 Up 10:19:27 - 10:33:10 -94
George/Umatilla 10:26:13 -18.2 Dark Down 47.4 177.6 Up 10:19:21 - 10:33:04 -111
Yakima 10:26:17 -18.2 Dark Down 46.7 175.9 Up 10:19:26 - 10:33:09 -122
Toppenish/White Swan 10:26:16 -18.3 Dark Down 46.9 176.1 Up 10:19:25 - 10:33:08 -129
Goldendale 10:26:17 -18.9 Dark Down 47.4 175.4 Up 10:19:25 - 10:33:08 -186
The Dalles 10:26:17 -19.3 Dark Down 47.6 174.9 Up 10:19:26 - 10:33:09 -218
Maupin 10:26:16 -19.5 Dark Down 48.0 175.0 Up 10:19:25 - 10:33:08 -242
Madras/Culver 10:26:15 -20.0 Dark Down 48.6 174.9 Up 10:19:24 - 10:33:07 -282
Redmond 10:26:14 -20.3 Dark Down 48.9 174.7 Up 10:19:23 - 10:33:06 -310
Sisters 10:26:16 -20.5 Dark Down 48.9 174.1 Up 10:19:24 - 10:33:07 -327
Bend 10:26:14 -20.5 Dark Down 49.1 174.5 Up 10:19:23 - 10:33:06 -331
Oregon Observatory 10:26:14 -20.7 Dark Down 49.3 174.3 Up 10:19:23 - 10:33:06 -350
La Pine/Gilchrist 10:26:14 -20.9 Dark Down 49.5 174.2 Up 10:19:23 - 10:33:06 -367
North Lake 10:26:11 -21.0 Dark Down 50.0 175.0 Up 10:19:20 - 10:33:03 -369
Paisley 10:26:09 -21.3 Dark Down 50.5 175.5 Up 10:19:18 - 10:33:01 -391
Lakeview 10:26:07 -21.6 Dark Down 51.1 175.8 Up 10:19:16 - 10:32:59 -418
Cedarville 10:26:05 -22.0 Dark Down 51.7 176.0 Up 10:19:14 - 10:32:57 -456
Chiloquin 10:26:13 -22.0 Dark Down 50.6 173.5 Up 10:19:21 - 10:33:04 -464
Klamath Falls 10:26:12 -22.2 Dark Down 50.9 173.5 Up 10:19:21 - 10:33:04 -485
Tulelake 10:26:10 -22.3 Dark Down 51.2 174.0 Up 10:19:19 - 10:33:02 -490
Fall River/Burney 10:26:08 -23.0 Dark Down 52.1 174.0 Up 10:19:17 - 10:33:00 -552
DCO 10:25:27 -23.1 Dark Down 58.0 188.2 Up 10:18:35 - 10:32:18 -552
Tonopah 10:25:48 -23.3 Dark Down 55.3 180.7 Up 10:18:56 - 10:32:39 -555
Susanville 10:26:04 -23.1 Dark Down 52.8 175.1 Up 10:19:13 - 10:32:56 -561
Patrick 10:25:30 -23.3 Dark Down 57.7 186.9 Up 10:18:39 - 10:32:22 -569
Indian Springs 10:25:39 -23.5 Dark Down 56.7 183.4 Up 10:18:48 - 10:32:31 -582
Reno 10:26:00 -23.4 Dark Down 53.7 176.3 Up 10:19:08 - 10:32:51 -582
Henderson 10:25:35 -23.5 Dark Down 57.2 184.7 Up 10:18:44 - 10:32:27 -584
Yerington 10:25:56 -23.5 Dark Down 54.3 177.4 Up 10:19:05 - 10:32:48 -589
Gimple 10:26:04 -23.5 Dark Down 53.1 174.7 Up 10:19:13 - 10:32:56 -592
Kingman/Dolan Springs 10:25:30 -23.6 Dark Down 58.0 186.5 Up 10:18:38 - 10:32:21 -595
Hawthorne 10:25:54 -23.6 Dark Down 54.8 178.3 Up 10:19:02 - 10:32:45 -595
Portola 10:26:02 -23.5 Dark Down 53.4 175.3 Up 10:19:11 - 10:32:54 -596
Greenville 10:26:05 -23.5 Dark Down 53.1 174.5 Up 10:19:13 - 10:32:56 -596
Carson City 10:25:59 -23.7 Dark Down 54.1 176.3 Up 10:19:07 - 10:32:50 -607
Quincy 10:26:04 -23.7 Dark Down 53.3 174.5 Up 10:19:13 - 10:32:56 -611
Beatty 10:25:44 -23.9 Dark Down 56.4 181.5 Up 10:18:52 - 10:32:35 -616
Searchlight/Boulder City 10:25:34 -23.9 Dark Down 57.8 184.9 Up 10:18:42 - 10:32:25 -622
Gardnerville 10:25:58 -23.9 Dark Down 54.3 176.4 Up 10:19:07 - 10:32:50 -623
Laughlin/Bullhead City 10:25:32 -23.9 Dark Down 58.0 185.6 Up 10:18:41 - 10:32:24 -625
Mohave Valley 10:25:31 -24.1 Dark Down 58.3 185.6 Up 10:18:39 - 10:32:22 -645
Lake Havasu City 10:25:29 -24.2 Dark Down 58.7 186.2 Up 10:18:38 - 10:32:21 -661
Lee Vining 10:25:54 -24.3 Dark Down 55.3 177.4 Up 10:19:02 - 10:32:45 -663
Bishop 10:25:50 -24.4 Dark Down 55.9 178.6 Up 10:18:59 - 10:32:42 -669
Parker 10:25:28 -24.5 Dark Down 59.0 186.3 Up 10:18:37 - 10:32:20 -685
Lone Pine 10:25:47 -24.8 Dark Down 56.7 179.2 Up 10:18:56 - 10:32:39 -708
Blythe 10:25:27 -25.0 Dark Down 59.6 185.8 Up 10:18:36 - 10:32:19 -741
Yuma 10:25:25 -25.7 Dark Down 60.5 185.8 Up 10:18:34 - 10:32:17 -813
Calipatria 10:25:29 -25.9 Dark Down 60.1 184.0 Up 10:18:38 - 10:32:21 -831
Idyllwild 10:25:35 -26.2 Dark Down 59.6 181.6 Up 10:18:43 - 10:32:26 -851
Wildwood 10:25:43 -27.0 Dark Down 59.2 178.0 Up 10:18:51 - 10:32:34 -928
CPSLO 10:25:52 -27.1 Dark Down 57.9 174.3 Up 10:19:01 - 10:32:44 -947

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 470309, (2019/05/08 10:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 34.21 158
60Bet Oph      17:43:28.3 +04:34:05  2.8  1.64 153
PPM 164135     17:31:21.4 +02:43:30  6.5  2.06 154
PPM 164378     17:39:31.2 +03:23:33  8.0  0.10 154
470309         17:39:15.3 +03:18:56 15.9       154
Positions are for J2000

Event circumstances last updated at 2018/06/11 17:24:13 UT

Marc W. Buie, Southwest Research Institute

RECON