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 10:17:46 UTC

J2000 position of star is 14:21:23.5 -14:23:14
Equinox of date position of star is 14:22:20.5 -14:27:58
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 145 seconds.
The 1-sigma cross-track error in the shadow position is 2155 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 5.0 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 10:16:51 -15.4 AT Up 12.2 230.6 Really Low 10:04:14 - 10:29:27 5041
Tonasket 10:16:50 -15.6 AT Up 12.3 230.7 Really Low 10:04:13 - 10:29:26 5034
Okanogan 10:16:49 -15.9 AT Up 12.6 230.6 Really Low 10:04:12 - 10:29:25 5022
Brewster 10:16:48 -16.2 AT Up 12.9 230.5 Really Low 10:04:12 - 10:29:25 5012
Manson/Chelan 10:16:48 -16.5 AT Up 13.2 230.2 Really Low 10:04:11 - 10:29:24 5004
Entiat 10:16:48 -16.7 AT Up 13.4 230.2 Really Low 10:04:11 - 10:29:24 4996
Wenatchee 10:16:47 -17.0 AT Up 13.6 230.2 Really Low 10:04:11 - 10:29:24 4987
Ellensburg 10:16:46 -17.4 AT Up 14.0 230.0 Really Low 10:04:10 - 10:29:23 4972
Yakima 10:16:46 -17.7 AT Up 14.2 230.1 Really Low 10:04:09 - 10:29:22 4957
Toppenish/White Swan 10:16:43 -17.9 AT Up 14.3 230.3 Really Low 10:04:07 - 10:29:20 4949
Pasco 10:16:41 -17.5 AT Up 13.7 231.4 Really Low 10:04:05 - 10:29:18 4947
PNWRO 10:16:40 -17.6 AT Up 13.7 231.6 Really Low 10:04:03 - 10:29:16 4938
George/Umatilla 10:16:41 -17.8 AT Up 14.0 231.2 Really Low 10:04:04 - 10:29:17 4933
Goldendale 10:16:42 -18.5 Dark Up 14.9 230.0 Really Low 10:04:06 - 10:29:19 4927
The Dalles 10:16:43 -18.8 Dark Up 15.2 229.8 Really Low 10:04:06 - 10:29:19 4917
Maupin 10:16:41 -19.1 Dark Up 15.4 229.9 Really Low 10:04:05 - 10:29:18 4901
Madras/Culver 10:16:40 -19.6 Dark Up 15.8 230.0 Really Low 10:04:04 - 10:29:17 4879
Redmond 10:16:38 -19.9 Dark Up 16.1 230.1 Really Low 10:04:02 - 10:29:15 4864
Sisters 10:16:40 -20.0 Dark Up 16.3 229.7 Really Low 10:04:03 - 10:29:16 4864
Bend 10:16:38 -20.1 Dark Up 16.3 230.0 Really Low 10:04:01 - 10:29:14 4855
Oregon Observatory 10:16:39 -20.3 Dark Up 16.5 229.9 Really Low 10:04:03 - 10:29:16 4848
La Pine/Gilchrist 10:16:37 -20.5 Dark Up 16.6 229.9 Really Low 10:04:00 - 10:29:13 4839
North Lake 10:16:35 -20.6 Dark Up 16.6 230.5 Really Low 10:03:59 - 10:29:12 4822
Paisley 10:16:33 -21.0 Dark Up 16.7 230.9 Really Low 10:03:56 - 10:29:09 4798
Chiloquin 10:16:36 -21.6 Dark Up 17.6 229.9 Really Low 10:03:59 - 10:29:12 4789
Lakeview 10:16:29 -21.3 Dark Up 17.0 231.2 Really Low 10:03:53 - 10:29:06 4776
Klamath Falls 10:16:34 -21.9 Dark Up 17.7 230.0 Really Low 10:03:57 - 10:29:10 4774
Tulelake 10:16:32 -22.0 Dark Up 17.7 230.3 Really Low 10:03:56 - 10:29:09 4763
Cedarville 10:16:27 -21.8 Dark Up 17.3 231.5 Really Low 10:03:51 - 10:29:04 4747
Fall River/Burney 10:16:29 -22.7 Dark Up 18.3 230.6 Really Low 10:03:53 - 10:29:06 4720
Susanville 10:16:25 -22.9 Dark Up 18.3 231.4 Really Low 10:03:48 - 10:29:01 4693
Gimple 10:16:24 -23.2 Dark Up 18.6 231.3 Really Low 10:03:48 - 10:29:01 4678
Greenville 10:16:25 -23.2 Dark Up 18.6 231.2 Really Low 10:03:48 - 10:29:01 4678
Quincy 10:16:25 -23.4 Dark Up 18.7 231.2 Really Low 10:03:49 - 10:29:02 4668
Portola 10:16:22 -23.3 Dark Up 18.5 231.7 Really Low 10:03:46 - 10:28:59 4664
Reno 10:16:20 -23.2 Dark Up 18.3 232.2 Really Low 10:03:44 - 10:28:57 4652
Niwot 10:15:53 -15.3 AT Down 8.6 242.9 Really Low 10:03:16 - 10:28:29 4647
Carson City 10:16:20 -23.5 Dark Up 18.5 232.3 Really Low 10:03:43 - 10:28:56 4634
Yerington 10:16:17 -23.4 Dark Up 18.2 232.9 Really Low 10:03:41 - 10:28:54 4625
Gardnerville 10:16:18 -23.7 Dark Up 18.6 232.4 Really Low 10:03:42 - 10:28:55 4622
Hawthorne 10:16:14 -23.5 Dark Up 18.2 233.4 Really Low 10:03:38 - 10:28:51 4602
Tonopah 10:16:09 -23.2 Dark Up 17.6 234.6 Really Low 10:03:33 - 10:28:46 4580
Lee Vining 10:16:13 -24.2 Dark Up 18.8 233.2 Really Low 10:03:37 - 10:28:50 4573
Bishop 10:16:11 -24.3 Dark Up 18.7 233.9 Really Low 10:03:34 - 10:28:47 4541
Beatty 10:16:05 -23.8 Dark Up 18.0 235.2 Really Low 10:03:29 - 10:28:42 4517
Lone Pine 10:16:07 -24.7 Dark Up 19.0 234.4 Really Low 10:03:31 - 10:28:44 4500
Indian Springs 10:16:02 -23.5 Dark Up 17.4 236.1 Really Low 10:03:25 - 10:28:38 4500
Henderson 10:15:59 -23.6 Dark Up 17.3 236.8 Really Low 10:03:22 - 10:28:35 4469
Searchlight/Boulder City 10:15:56 -24.0 Dark Up 17.6 237.0 Really Low 10:03:20 - 10:28:33 4437
Patrick 10:15:55 -23.4 Dark Down 16.9 237.7 Really Low 10:03:18 - 10:28:31 4433
CPSLO 10:16:09 -27.0 Dark Up 21.4 232.8 Low 10:03:33 - 10:28:46 4422
Kingman/Dolan Springs 10:15:53 -23.7 Dark Down 17.1 237.6 Really Low 10:03:17 - 10:28:30 4421
Laughlin/Bullhead City 10:15:55 -24.0 Dark Up 17.5 237.3 Really Low 10:03:18 - 10:28:31 4419
DCO 10:15:52 -23.3 Dark Down 16.5 238.3 Really Low 10:03:15 - 10:28:28 4415
Mohave Valley 10:15:54 -24.2 Dark Up 17.6 237.3 Really Low 10:03:17 - 10:28:30 4404
Lake Havasu City 10:15:52 -24.4 Dark Down 17.7 237.6 Really Low 10:03:16 - 10:28:29 4380
Parker 10:15:50 -24.6 Dark Down 17.9 237.7 Really Low 10:03:14 - 10:28:27 4360
Wildwood 10:16:01 -27.0 Dark Up 20.8 234.7 Low 10:03:24 - 10:28:37 4357
Idyllwild 10:15:56 -26.3 Dark Up 19.7 236.1 Really Low 10:03:19 - 10:28:32 4338
Blythe 10:15:50 -25.2 Dark Up 18.3 237.7 Really Low 10:03:13 - 10:28:26 4329
Calipatria 10:15:52 -26.1 Dark Up 19.3 237.2 Really Low 10:03:15 - 10:28:28 4300
Yuma 10:15:48 -25.9 Dark Up 18.9 237.9 Really Low 10:03:12 - 10:28:25 4273

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 2017/06/01 18:11:51 UT

Marc W. Buie, Southwest Research Institute

RECON