RECON: TNO occultation with 470309

Event between (470309) 07JK43 and star UC4-467-063296 with event index number of 190596

Geocentric closest approach at 2019/05/08 10:18:18 UTC

J2000 position of star is 17:39:15.3 +03:18:56
Equinox of date position of star is 17:40:09.0 +03:18:24
Stellar brightness R=15.8, 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 60 seconds.
The 1-sigma cross-track error in the shadow position is 1287 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 10:18UT)
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 +03:18:21 15.8       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 15.0 km RECON observability=1.0 and success probability=23.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 10:19:31 -16.0 AT Down 51.9 197.8 Up 10:13:59 - 10:25:03 -117
Oroville 10:20:34 -16.4 AT Down 44.3 175.6 Up 10:15:02 - 10:26:06 -233
Tonasket 10:20:34 -16.6 AT Down 44.5 175.6 Up 10:15:02 - 10:26:06 -248
Okanogan 10:20:34 -17.0 AT Down 44.9 175.4 Up 10:15:02 - 10:26:06 -276
Brewster 10:20:34 -17.3 AT Down 45.1 175.0 Up 10:15:02 - 10:26:06 -303
Manson/Chelan 10:20:34 -17.6 AT Down 45.3 174.5 Up 10:15:02 - 10:26:06 -334
Entiat 10:20:34 -17.8 AT Down 45.5 174.4 Up 10:15:02 - 10:26:06 -351
Wenatchee 10:20:34 -18.0 Dark Down 45.8 174.2 Up 10:15:02 - 10:26:06 -373
Pasco 10:20:28 -18.5 Dark Down 47.0 175.8 Up 10:14:56 - 10:26:00 -396
PNWRO 10:20:27 -18.6 Dark Down 47.2 176.1 Up 10:14:55 - 10:25:59 -403
Ellensburg 10:20:34 -18.4 Dark Down 46.2 173.9 Up 10:15:02 - 10:26:06 -411
George/Umatilla 10:20:28 -18.8 Dark Down 47.3 175.5 Up 10:14:56 - 10:26:00 -429
Yakima 10:20:33 -18.8 Dark Down 46.6 173.8 Up 10:15:01 - 10:26:05 -440
Toppenish/White Swan 10:20:32 -18.9 Dark Down 46.8 174.0 Up 10:15:00 - 10:26:04 -447
Goldendale 10:20:32 -19.5 Dark Down 47.3 173.3 Up 10:15:00 - 10:26:04 -505
The Dalles 10:20:32 -19.8 Dark Down 47.5 172.7 Up 10:15:00 - 10:26:04 -537
Maupin 10:20:32 -20.1 Dark Down 47.9 172.8 Up 10:15:00 - 10:26:04 -562
Madras/Culver 10:20:31 -20.6 Dark Down 48.5 172.7 Up 10:14:59 - 10:26:03 -602
Redmond 10:20:30 -20.9 Dark Down 48.8 172.6 Up 10:14:58 - 10:26:02 -630
Sisters 10:20:31 -21.1 Dark Down 48.8 172.0 Up 10:14:59 - 10:26:03 -647
Bend 10:20:30 -21.2 Dark Down 49.0 172.3 Up 10:14:58 - 10:26:02 -652
Oregon Observatory 10:20:30 -21.3 Dark Down 49.2 172.1 Up 10:14:58 - 10:26:02 -671
La Pine/Gilchrist 10:20:30 -21.5 Dark Down 49.4 172.0 Up 10:14:58 - 10:26:02 -688
North Lake 10:20:27 -21.6 Dark Down 49.9 172.8 Up 10:14:55 - 10:25:59 -690
Paisley 10:20:25 -21.9 Dark Down 50.4 173.3 Up 10:14:53 - 10:25:57 -713
Lakeview 10:20:23 -22.3 Dark Down 51.0 173.5 Up 10:14:51 - 10:25:55 -740
Cedarville 10:20:21 -22.7 Dark Down 51.6 173.7 Up 10:14:49 - 10:25:53 -779
Chiloquin 10:20:28 -22.6 Dark Down 50.4 171.2 Up 10:14:56 - 10:26:00 -786
Klamath Falls 10:20:28 -22.8 Dark Down 50.8 171.3 Up 10:14:56 - 10:26:00 -807
Tulelake 10:20:26 -22.9 Dark Down 51.1 171.7 Up 10:14:54 - 10:25:58 -812
Fall River/Burney 10:20:24 -23.6 Dark Down 52.0 171.6 Up 10:14:52 - 10:25:56 -876
DCO 10:19:43 -24.0 Dark Down 58.1 185.5 Up 10:14:11 - 10:25:15 -883
Tonopah 10:20:04 -24.0 Dark Down 55.2 178.2 Up 10:14:32 - 10:25:36 -883
Susanville 10:20:20 -23.8 Dark Down 52.7 172.7 Up 10:14:48 - 10:25:52 -885
Patrick 10:19:46 -24.2 Dark Down 57.8 184.2 Up 10:14:14 - 10:25:18 -899
Reno 10:20:15 -24.1 Dark Down 53.6 173.9 Up 10:14:43 - 10:25:47 -908
Indian Springs 10:19:55 -24.3 Dark Down 56.7 180.8 Up 10:14:23 - 10:25:27 -911
Henderson 10:19:52 -24.3 Dark Down 57.3 182.1 Up 10:14:20 - 10:25:24 -913
Yerington 10:20:12 -24.2 Dark Down 54.2 174.9 Up 10:14:40 - 10:25:44 -915
Gimple 10:20:20 -24.1 Dark Down 52.9 172.3 Up 10:14:48 - 10:25:52 -917
Greenville 10:20:21 -24.2 Dark Down 52.9 172.2 Up 10:14:49 - 10:25:53 -921
Portola 10:20:18 -24.2 Dark Down 53.3 172.9 Up 10:14:46 - 10:25:50 -921
Hawthorne 10:20:10 -24.3 Dark Down 54.7 175.8 Up 10:14:38 - 10:25:42 -922
Kingman/Dolan Springs 10:19:46 -24.4 Dark Down 58.1 183.8 Up 10:14:14 - 10:25:18 -926
Carson City 10:20:14 -24.4 Dark Down 54.0 173.9 Up 10:14:42 - 10:25:46 -933
Quincy 10:20:20 -24.3 Dark Down 53.1 172.1 Up 10:14:48 - 10:25:52 -936
Beatty 10:19:59 -24.6 Dark Down 56.4 178.9 Up 10:14:27 - 10:25:31 -945
Gardnerville 10:20:14 -24.6 Dark Down 54.2 173.9 Up 10:14:42 - 10:25:46 -949
Searchlight/Boulder City 10:19:50 -24.7 Dark Down 57.8 182.2 Up 10:14:18 - 10:25:22 -953
Laughlin/Bullhead City 10:19:48 -24.7 Dark Down 58.1 182.9 Up 10:14:16 - 10:25:20 -956
Mohave Valley 10:19:47 -24.9 Dark Down 58.4 182.9 Up 10:14:15 - 10:25:19 -976
Lee Vining 10:20:10 -25.0 Dark Down 55.3 174.9 Up 10:14:38 - 10:25:42 -990
Lake Havasu City 10:19:45 -25.1 Dark Down 58.8 183.4 Up 10:14:13 - 10:25:17 -992
Bishop 10:20:06 -25.1 Dark Down 55.9 176.0 Up 10:14:34 - 10:25:38 -997
Parker 10:19:44 -25.3 Dark Down 59.1 183.5 Up 10:14:12 - 10:25:16 -1017
Lone Pine 10:20:03 -25.5 Dark Down 56.7 176.5 Up 10:14:31 - 10:25:35 -1037
Blythe 10:19:44 -25.9 Dark Down 59.7 182.9 Up 10:14:12 - 10:25:16 -1073
Yuma 10:19:41 -26.6 Dark Down 60.6 182.9 Up 10:14:09 - 10:25:13 -1146
Calipatria 10:19:45 -26.8 Dark Down 60.2 181.1 Up 10:14:13 - 10:25:17 -1163
Idyllwild 10:19:52 -27.0 Dark Down 59.6 178.8 Up 10:14:20 - 10:25:24 -1183
Wildwood 10:19:59 -27.7 Dark Down 59.1 175.2 Up 10:14:27 - 10:25:31 -1259
CPSLO 10:20:08 -27.9 Dark Down 57.7 171.6 Up 10:14:36 - 10:25:40 -1277

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 10:18UT)
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 15.8       154
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:54:29 UT

Marc W. Buie, Southwest Research Institute

RECON