RECON: TNO occultation with 469509

Event between (469509) 03HC57 and star GA0740:05170998 with event index number of 190785

Geocentric closest approach at 2019/05/14 10:19:13 UTC

J2000 position of star is 14:21:23.5 -14:23:14
Equinox of date position of star is 14:22:23.9 -14:28:15
Stellar brightness G=16.3, 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 179 seconds.
The 1-sigma cross-track error in the shadow position is 2572 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 10:19UT)
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 16.3        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)
Penticton 10:22:42 -14.4 AT Up 11.1 231.7 Really Low 10:07:42 - 10:37:42 8958
Oroville 10:22:41 -14.8 AT Up 11.4 231.9 Really Low 10:07:41 - 10:37:41 8939
Tonasket 10:22:40 -15.0 AT Up 11.5 231.9 Really Low 10:07:40 - 10:37:40 8931
Okanogan 10:22:39 -15.3 AT Up 11.8 231.8 Really Low 10:07:39 - 10:37:39 8920
Brewster 10:22:38 -15.6 AT Up 12.1 231.7 Really Low 10:07:38 - 10:37:38 8910
Manson/Chelan 10:22:37 -15.9 AT Up 12.4 231.4 Really Low 10:07:37 - 10:37:37 8903
Entiat 10:22:36 -16.2 AT Up 12.6 231.4 Really Low 10:07:36 - 10:37:36 8895
Wenatchee 10:22:38 -16.4 AT Up 12.8 231.4 Really Low 10:07:38 - 10:37:38 8886
Ellensburg 10:22:36 -16.8 AT Up 13.2 231.3 Really Low 10:07:36 - 10:37:36 8870
Yakima 10:22:35 -17.2 AT Up 13.5 231.3 Really Low 10:07:35 - 10:37:35 8855
Toppenish/White Swan 10:22:33 -17.3 AT Up 13.5 231.5 Really Low 10:07:33 - 10:37:33 8847
Pasco 10:22:30 -16.9 AT Up 12.9 232.6 Really Low 10:07:30 - 10:37:30 8844
PNWRO 10:22:29 -17.0 AT Up 12.9 232.8 Really Low 10:07:29 - 10:37:29 8835
George/Umatilla 10:22:30 -17.2 AT Up 13.2 232.4 Really Low 10:07:30 - 10:37:30 8831
Goldendale 10:22:32 -17.9 AT Up 14.1 231.2 Really Low 10:07:32 - 10:37:32 8826
The Dalles 10:22:32 -18.2 Dark Up 14.4 231.0 Really Low 10:07:32 - 10:37:32 8816
Maupin 10:22:31 -18.5 Dark Up 14.6 231.2 Really Low 10:07:31 - 10:37:31 8800
Madras/Culver 10:22:29 -19.0 Dark Up 15.0 231.2 Really Low 10:07:29 - 10:37:29 8778
Sisters 10:22:28 -19.5 Dark Up 15.5 230.9 Really Low 10:07:28 - 10:37:28 8763
Redmond 10:22:29 -19.3 Dark Up 15.3 231.3 Really Low 10:07:29 - 10:37:29 8763
Bend 10:22:29 -19.5 Dark Up 15.5 231.2 Really Low 10:07:29 - 10:37:29 8754
Oregon Observatory 10:22:27 -19.7 Dark Up 15.7 231.1 Really Low 10:07:27 - 10:37:27 8746
La Pine/Gilchrist 10:22:26 -19.9 Dark Up 15.8 231.1 Really Low 10:07:26 - 10:37:26 8737
North Lake 10:22:25 -20.0 Dark Up 15.8 231.7 Really Low 10:07:25 - 10:37:25 8720
Paisley 10:22:22 -20.3 Dark Up 15.9 232.1 Really Low 10:07:22 - 10:37:22 8696
Chiloquin 10:22:25 -21.0 Dark Up 16.7 231.1 Really Low 10:07:25 - 10:37:25 8688
Lakeview 10:22:19 -20.7 Dark Up 16.1 232.4 Really Low 10:07:19 - 10:37:19 8674
Klamath Falls 10:22:23 -21.2 Dark Up 16.9 231.2 Really Low 10:07:23 - 10:37:23 8673
Tulelake 10:22:22 -21.3 Dark Up 16.9 231.5 Really Low 10:07:22 - 10:37:22 8661
Cedarville 10:22:17 -21.1 Dark Up 16.4 232.6 Really Low 10:07:17 - 10:37:17 8644
Fall River/Burney 10:22:18 -22.0 Dark Up 17.4 231.8 Really Low 10:07:18 - 10:37:18 8619
Susanville 10:22:14 -22.2 Dark Up 17.4 232.5 Really Low 10:07:14 - 10:37:14 8591
Gimple 10:22:14 -22.5 Dark Up 17.7 232.4 Really Low 10:07:14 - 10:37:14 8577
Greenville 10:22:15 -22.6 Dark Up 17.7 232.4 Really Low 10:07:15 - 10:37:15 8577
Quincy 10:22:15 -22.7 Dark Up 17.8 232.4 Really Low 10:07:15 - 10:37:15 8567
Portola 10:22:12 -22.6 Dark Up 17.6 232.8 Really Low 10:07:12 - 10:37:12 8561
Reno 10:22:10 -22.5 Dark Up 17.4 233.4 Really Low 10:07:10 - 10:37:10 8549
Niwot 10:21:43 -14.4 AT Down 7.6 243.9 Really Low 10:06:43 - 10:36:43 8533
Carson City 10:22:08 -22.8 Dark Up 17.6 233.5 Really Low 10:07:08 - 10:37:08 8531
Yerington 10:22:07 -22.7 Dark Up 17.3 234.0 Really Low 10:07:07 - 10:37:07 8522
Gardnerville 10:22:07 -23.0 Dark Up 17.7 233.6 Really Low 10:07:07 - 10:37:07 8519
Hawthorne 10:22:04 -22.8 Dark Up 17.3 234.5 Really Low 10:07:04 - 10:37:04 8499
Tonopah 10:21:59 -22.4 Dark Up 16.6 235.7 Really Low 10:06:59 - 10:36:59 8475
Lee Vining 10:22:03 -23.5 Dark Up 17.9 234.3 Really Low 10:07:03 - 10:37:03 8469
Bishop 10:22:00 -23.6 Dark Up 17.8 235.0 Really Low 10:07:00 - 10:37:00 8438
Beatty 10:21:56 -23.1 Dark Up 17.0 236.3 Really Low 10:06:56 - 10:36:56 8413
Lone Pine 10:21:56 -24.0 Dark Up 18.0 235.4 Really Low 10:06:56 - 10:36:56 8397
Indian Springs 10:21:51 -22.8 Dark Up 16.5 237.2 Really Low 10:06:51 - 10:36:51 8394
Henderson 10:21:48 -22.8 Dark Down 16.3 237.8 Really Low 10:06:48 - 10:36:48 8364
Searchlight/Boulder City 10:21:46 -23.2 Dark Down 16.6 238.0 Really Low 10:06:46 - 10:36:46 8332
Patrick 10:21:45 -22.6 Dark Down 15.9 238.7 Really Low 10:06:45 - 10:36:45 8327
CPSLO 10:21:59 -26.3 Dark Up 20.5 233.9 Low 10:06:59 - 10:36:59 8321
Kingman/Dolan Springs 10:21:42 -22.9 Dark Down 16.1 238.7 Really Low 10:06:42 - 10:36:42 8314
Laughlin/Bullhead City 10:21:44 -23.2 Dark Down 16.5 238.3 Really Low 10:06:44 - 10:36:44 8314
DCO 10:21:40 -22.4 Dark Down 15.5 239.3 Really Low 10:06:40 - 10:36:40 8307
Mohave Valley 10:21:45 -23.4 Dark Down 16.6 238.4 Really Low 10:06:45 - 10:36:45 8298
Lake Havasu City 10:21:41 -23.6 Dark Down 16.7 238.6 Really Low 10:06:41 - 10:36:41 8275
Parker 10:21:41 -23.8 Dark Down 16.8 238.8 Really Low 10:06:41 - 10:36:41 8254
Wildwood 10:21:50 -26.2 Dark Up 19.8 235.7 Really Low 10:06:50 - 10:36:50 8254
Idyllwild 10:21:45 -25.4 Dark Up 18.7 237.2 Really Low 10:06:45 - 10:36:45 8233
Blythe 10:21:40 -24.3 Dark Down 17.3 238.7 Really Low 10:06:40 - 10:36:40 8224
Calipatria 10:21:40 -25.2 Dark Down 18.2 238.2 Really Low 10:06:40 - 10:36:40 8196
Yuma 10:21:37 -25.0 Dark Down 17.8 238.9 Really Low 10:06:37 - 10:36:37 8168

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 10:19UT)
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 16.3        43
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:10:30 UT

Marc W. Buie, Southwest Research Institute

RECON