RECON: TNO occultation with 469509

Event between (469509) 03HC57 and star UC4-379-066668 with event index number of 190785

Geocentric closest approach at 2019/05/14 10:17:36 UTC

J2000 position of star is 14:21:23.5 -14:23:14
Equinox of date position of star is 14:22:22.2 -14:28:07
Stellar brightness R=16.4, use SENSEUP=128
Star is 43 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 42.5 AU from the Sun and 41.5 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 185 seconds.
The 1-sigma cross-track error in the shadow position is 2573 km.
The sky-plane scale is 30093.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 17.5 sec chord
Diameter=170.2 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 469509, (2019/05/14 10:18UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.0 -11:15:43  1.0 14.07  30
2 Lib          14:24:28.3 -11:48:06  6.2  2.72  42
PPM 228623     14:20:18.2 -14:29:47  7.3  0.52  43
PPM 228668     14:22:35.7 -14:21:30  9.4  0.12  43
469509         14:22:26.9 -14:28:30 16.4        43
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 4.9 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:16:40 -15.4 AT Up 12.2 230.6 Really Low 10:01:40 - 10:31:40 4578
Tonasket 10:16:39 -15.6 AT Up 12.3 230.7 Really Low 10:01:39 - 10:31:39 4570
Okanogan 10:16:39 -15.9 AT Up 12.6 230.6 Really Low 10:01:39 - 10:31:39 4558
Brewster 10:16:38 -16.2 AT Up 12.9 230.5 Really Low 10:01:38 - 10:31:38 4549
Manson/Chelan 10:16:38 -16.5 AT Up 13.2 230.2 Really Low 10:01:38 - 10:31:38 4541
Entiat 10:16:37 -16.7 AT Up 13.4 230.2 Really Low 10:01:37 - 10:31:37 4533
Wenatchee 10:16:37 -17.0 AT Up 13.6 230.1 Really Low 10:01:37 - 10:31:37 4524
Ellensburg 10:16:35 -17.4 AT Up 14.0 230.0 Really Low 10:01:35 - 10:31:35 4508
Yakima 10:16:35 -17.8 AT Up 14.3 230.1 Really Low 10:01:35 - 10:31:35 4493
Toppenish/White Swan 10:16:33 -17.9 AT Up 14.3 230.2 Really Low 10:01:33 - 10:31:33 4485
Pasco 10:16:30 -17.5 AT Up 13.7 231.3 Really Low 10:01:30 - 10:31:30 4483
PNWRO 10:16:29 -17.6 AT Up 13.8 231.6 Really Low 10:01:29 - 10:31:29 4474
George/Umatilla 10:16:29 -17.8 AT Up 14.1 231.2 Really Low 10:01:29 - 10:31:29 4470
Goldendale 10:16:33 -18.5 Dark Up 14.9 230.0 Really Low 10:01:33 - 10:31:33 4463
The Dalles 10:16:33 -18.8 Dark Up 15.2 229.7 Really Low 10:01:33 - 10:31:33 4453
Maupin 10:16:31 -19.1 Dark Up 15.5 229.9 Really Low 10:01:31 - 10:31:31 4437
Madras/Culver 10:16:30 -19.6 Dark Up 15.8 230.0 Really Low 10:01:30 - 10:31:30 4415
Redmond 10:16:29 -19.9 Dark Up 16.1 230.0 Really Low 10:01:29 - 10:31:29 4400
Sisters 10:16:29 -20.1 Dark Up 16.3 229.7 Really Low 10:01:29 - 10:31:29 4400
Bend 10:16:27 -20.2 Dark Up 16.3 229.9 Really Low 10:01:27 - 10:31:27 4391
Oregon Observatory 10:16:28 -20.4 Dark Up 16.5 229.9 Really Low 10:01:28 - 10:31:28 4383
La Pine/Gilchrist 10:16:28 -20.6 Dark Up 16.7 229.9 Really Low 10:01:28 - 10:31:28 4374
North Lake 10:16:24 -20.7 Dark Up 16.6 230.5 Really Low 10:01:24 - 10:31:24 4357
Paisley 10:16:22 -21.0 Dark Up 16.8 230.9 Really Low 10:01:22 - 10:31:22 4334
Chiloquin 10:16:25 -21.6 Dark Up 17.6 229.8 Really Low 10:01:25 - 10:31:25 4324
Lakeview 10:16:20 -21.3 Dark Up 17.0 231.1 Really Low 10:01:20 - 10:31:20 4311
Klamath Falls 10:16:23 -21.9 Dark Up 17.8 230.0 Really Low 10:01:23 - 10:31:23 4309
Tulelake 10:16:22 -22.0 Dark Up 17.8 230.3 Really Low 10:01:22 - 10:31:22 4298
Cedarville 10:16:17 -21.8 Dark Up 17.3 231.4 Really Low 10:01:17 - 10:31:17 4282
Fall River/Burney 10:16:19 -22.7 Dark Up 18.3 230.6 Really Low 10:01:19 - 10:31:19 4256
Susanville 10:16:15 -22.9 Dark Up 18.3 231.3 Really Low 10:01:15 - 10:31:15 4228
Gimple 10:16:15 -23.2 Dark Up 18.6 231.2 Really Low 10:01:15 - 10:31:15 4214
Greenville 10:16:15 -23.3 Dark Up 18.6 231.2 Really Low 10:01:15 - 10:31:15 4214
Quincy 10:16:13 -23.4 Dark Up 18.8 231.2 Really Low 10:01:13 - 10:31:13 4204
Portola 10:16:12 -23.3 Dark Up 18.5 231.6 Really Low 10:01:12 - 10:31:12 4199
Reno 10:16:10 -23.2 Dark Up 18.3 232.2 Really Low 10:01:10 - 10:31:10 4187
Niwot 10:15:42 -15.3 AT Down 8.6 242.9 Really Low 10:00:42 - 10:30:42 4184
Carson City 10:16:09 -23.5 Dark Up 18.5 232.3 Really Low 10:01:09 - 10:31:09 4169
Yerington 10:16:07 -23.4 Dark Up 18.3 232.9 Really Low 10:01:07 - 10:31:07 4161
Gardnerville 10:16:08 -23.7 Dark Up 18.7 232.4 Really Low 10:01:08 - 10:31:08 4157
Hawthorne 10:16:05 -23.5 Dark Up 18.2 233.4 Really Low 10:01:05 - 10:31:05 4138
Tonopah 10:16:00 -23.2 Dark Up 17.6 234.6 Really Low 10:01:00 - 10:31:00 4115
Lee Vining 10:16:04 -24.2 Dark Up 18.9 233.2 Really Low 10:01:04 - 10:31:04 4108
Bishop 10:16:00 -24.3 Dark Up 18.8 233.9 Really Low 10:01:00 - 10:31:00 4077
Beatty 10:15:54 -23.9 Dark Up 18.0 235.2 Really Low 10:00:54 - 10:30:54 4054
Lone Pine 10:15:56 -24.7 Dark Up 19.0 234.3 Really Low 10:00:56 - 10:30:56 4036
Indian Springs 10:15:52 -23.6 Dark Up 17.5 236.1 Really Low 10:00:52 - 10:30:52 4036
Henderson 10:15:48 -23.6 Dark Up 17.3 236.7 Really Low 10:00:48 - 10:30:48 4006
Searchlight/Boulder City 10:15:46 -24.0 Dark Up 17.6 236.9 Really Low 10:00:46 - 10:30:46 3974
Patrick 10:15:43 -23.5 Dark Down 16.9 237.7 Really Low 10:00:43 - 10:30:43 3970
CPSLO 10:16:00 -27.1 Dark Up 21.5 232.7 Low 10:01:00 - 10:31:00 3958
Kingman/Dolan Springs 10:15:44 -23.7 Dark Down 17.1 237.6 Really Low 10:00:44 - 10:30:44 3958
Laughlin/Bullhead City 10:15:45 -24.0 Dark Up 17.5 237.2 Really Low 10:00:45 - 10:30:45 3957
DCO 10:15:41 -23.3 Dark Down 16.6 238.3 Really Low 10:00:41 - 10:30:41 3952
Mohave Valley 10:15:44 -24.2 Dark Up 17.7 237.3 Really Low 10:00:44 - 10:30:44 3941
Lake Havasu City 10:15:42 -24.4 Dark Up 17.7 237.6 Really Low 10:00:42 - 10:30:42 3918
Parker 10:15:41 -24.6 Dark Down 17.9 237.7 Really Low 10:00:41 - 10:30:41 3897
Wildwood 10:15:50 -27.0 Dark Up 20.8 234.6 Low 10:00:50 - 10:30:50 3893
Idyllwild 10:15:46 -26.3 Dark Up 19.8 236.1 Really Low 10:00:46 - 10:30:46 3874
Blythe 10:15:40 -25.2 Dark Up 18.4 237.6 Really Low 10:00:40 - 10:30:40 3866
Calipatria 10:15:41 -26.1 Dark Up 19.3 237.1 Really Low 10:00:41 - 10:30:41 3837
Yuma 10:15:37 -25.9 Dark Up 18.9 237.9 Really Low 10:00:37 - 10:30:37 3810

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 469509, (2019/05/14 10:18UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 14.07  30
2 Lib          14:23:25.6 -11:42:52  6.2  2.72  42
PPM 228623     14:19:14.9 -14:24:29  7.3  0.52  43
PPM 228668     14:21:32.3 -14:16:14  9.4  0.12  43
469509         14:21:23.5 -14:23:14 16.4        43
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:55:49 UT

Marc W. Buie, Southwest Research Institute

RECON