RECON: TNO occultation with 04PX107

Event between 04PX107 and star UC4-359-202499 with event index number of 208223

Geocentric closest approach at 2019/07/01 08:12:44 UTC

J2000 position of star is 21:25:45.3 -18:13:25
Equinox of date position of star is 21:26:44.5 -18:08:48
Stellar brightness R=16.2, use SENSEUP=128
Star is 122 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 41.9 AU from the Sun and 41.1 AU from the Earth.
The TNO is moving 18.1 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 399 seconds.
The 1-sigma cross-track error in the shadow position is 5407 km.
The sky-plane scale is 29825.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=219.8 km assuming a 5% albedo -- 12.2 sec chord
Diameter=89.7 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04PX107, (2019/07/01 08:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.4 -29:31:06  1.2 23.83 104
32Iot Cap      21:23:19.8 -16:45:02  4.3  1.62 122
PPM 238835     21:27:21.8 -18:03:52  8.2  0.14 122
PPM 238825     21:26:43.1 -18:09:47 10.0  0.04 122
04PX107        21:26:50.6 -18:08:19 16.2       121
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 2.3 sigma about the mid-time.
The median site spacing is 15.0 km RECON observability=0.5 and success probability=0.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 08:13:07 -17.9 AT Down 14.6 142.3 Really Low 07:58:07 - 08:28:07 14511
Tonasket 08:13:09 -18.1 Dark Down 14.8 142.3 Really Low 07:58:09 - 08:28:09 14505
Okanogan 08:13:11 -18.5 Dark Down 15.0 142.1 Really Low 07:58:11 - 08:28:11 14497
Brewster 08:13:12 -18.8 Dark Down 15.2 141.9 Really Low 07:58:12 - 08:28:12 14491
Manson/Chelan 08:13:14 -19.0 Dark Down 15.2 141.5 Really Low 07:58:14 - 08:28:14 14488
Entiat 08:13:14 -19.2 Dark Down 15.3 141.4 Really Low 07:58:14 - 08:28:14 14482
Wenatchee 08:13:16 -19.5 Dark Down 15.5 141.3 Really Low 07:58:16 - 08:28:16 14475
Ellensburg 08:13:17 -19.9 Dark Down 15.7 141.1 Really Low 07:58:17 - 08:28:17 14465
Yakima 08:13:20 -20.3 Dark Down 16.0 141.0 Really Low 07:58:20 - 08:28:20 14452
Toppenish/White Swan 08:13:21 -20.5 Dark Down 16.3 141.1 Really Low 07:58:21 - 08:28:21 14444
Pasco 08:13:16 -20.6 Dark Down 16.9 142.2 Really Low 07:58:16 - 08:28:16 14430
Goldendale 08:13:23 -21.0 Dark Down 16.5 140.6 Really Low 07:58:23 - 08:28:23 14430
The Dalles 08:13:26 -21.3 Dark Down 16.5 140.3 Really Low 07:58:26 - 08:28:26 14425
George/Umatilla 08:13:17 -20.9 Dark Down 17.1 141.9 Really Low 07:58:17 - 08:28:17 14421
PNWRO 08:13:16 -20.8 Dark Down 17.2 142.3 Really Low 07:58:16 - 08:28:16 14421
Maupin 08:13:26 -21.7 Dark Down 16.9 140.3 Really Low 07:58:26 - 08:28:26 14411
Madras/Culver 08:13:28 -22.2 Dark Down 17.3 140.2 Really Low 07:58:28 - 08:28:28 14393
Sisters 08:13:32 -22.6 Dark Down 17.4 139.7 Really Low 07:58:32 - 08:28:32 14385
Redmond 08:13:32 -22.6 Dark Down 17.6 140.0 Really Low 07:58:32 - 08:28:32 14381
Bend 08:13:33 -22.8 Dark Down 17.7 139.9 Really Low 07:58:33 - 08:28:33 14375
Oregon Observatory 08:13:32 -23.0 Dark Down 17.7 139.7 Really Low 07:58:32 - 08:28:32 14370
La Pine/Gilchrist 08:13:35 -23.2 Dark Down 17.9 139.6 Really Low 07:58:35 - 08:28:35 14363
North Lake 08:13:35 -23.6 Dark Down 18.5 140.1 Really Low 07:58:35 - 08:28:35 14343
Chiloquin 08:13:40 -24.3 Dark Down 18.5 139.1 Really Low 07:58:40 - 08:28:40 14324
Paisley 08:13:35 -24.2 Dark Down 19.1 140.3 Really Low 07:58:35 - 08:28:35 14319
Klamath Falls 08:13:40 -24.7 Dark Down 18.8 139.1 Really Low 07:58:40 - 08:28:40 14311
Lakeview 08:13:37 -24.7 Dark Down 19.6 140.3 Really Low 07:58:37 - 08:28:37 14298
Tulelake 08:13:39 -24.9 Dark Down 19.2 139.3 Really Low 07:58:39 - 08:28:39 14298
Cedarville 08:13:37 -25.3 Dark Down 20.1 140.3 Low 07:58:37 - 08:28:37 14271
Fall River/Burney 08:13:42 -25.8 Dark Down 19.9 139.2 Really Low 07:58:42 - 08:28:42 14261
Susanville 08:13:40 -26.4 Dark Down 20.8 139.7 Low 07:58:40 - 08:28:40 14229
Greenville 08:13:47 -26.7 Dark Down 20.9 139.4 Low 07:58:47 - 08:28:47 14219
Gimple 08:13:44 -26.7 Dark Down 20.9 139.4 Low 07:58:44 - 08:28:44 14219
Quincy 08:13:46 -26.9 Dark Down 21.0 139.3 Low 07:58:46 - 08:28:46 14211
Portola 08:13:44 -27.0 Dark Down 21.3 139.7 Low 07:58:44 - 08:28:44 14202
Reno 08:13:42 -27.3 Dark Down 21.9 140.2 Low 07:58:42 - 08:28:42 14185
Carson City 08:13:43 -27.6 Dark Down 22.1 140.1 Low 07:58:43 - 08:28:43 14169
Gardnerville 08:13:44 -27.9 Dark Down 22.4 140.1 Low 07:58:44 - 08:28:44 14157
Yerington 08:13:44 -27.8 Dark Down 22.6 140.6 Low 07:58:44 - 08:28:44 14154
Hawthorne 08:13:42 -28.3 Dark Down 23.2 141.0 Low 07:58:42 - 08:28:42 14128
Lee Vining 08:13:47 -28.8 Dark Down 23.4 140.4 Low 07:58:47 - 08:28:47 14107
Tonopah 08:13:40 -28.6 Dark Down 24.3 142.1 Low 07:58:40 - 08:28:40 14092
Bishop 08:13:47 -29.4 Dark Down 24.3 140.9 Low 07:58:47 - 08:28:47 14071
Beatty 08:13:40 -29.7 Dark Down 25.4 142.2 Low 07:58:40 - 08:28:40 14031
Lone Pine 08:13:47 -30.1 Dark Down 25.0 140.9 Low 07:58:47 - 08:28:47 14031
Niwot 08:12:44 -24.8 Dark Down 27.4 153.9 Low 07:57:44 - 08:27:44 14013
Indian Springs 08:13:37 -30.0 Dark Down 26.2 143.0 Low 07:58:37 - 08:28:37 14003
CPSLO 08:13:54 -31.6 Dark Down 24.7 138.3 Low 07:58:54 - 08:28:54 13991
Henderson 08:13:36 -30.4 Dark Down 27.0 143.5 Low 07:58:36 - 08:28:36 13967
Searchlight/Boulder City 08:13:38 -31.0 Dark Down 27.5 143.4 Low 07:58:38 - 08:28:38 13937
Patrick 08:13:35 -30.9 Dark Down 28.0 144.3 Low 07:58:35 - 08:28:35 13921
Laughlin/Bullhead City 08:13:37 -31.2 Dark Down 27.9 143.6 Low 07:58:37 - 08:28:37 13917
Kingman/Dolan Springs 08:13:35 -31.2 Dark Down 28.1 144.1 Low 07:58:35 - 08:28:35 13912
Wildwood 08:13:54 -32.7 Dark Down 26.7 139.7 Low 07:58:54 - 08:28:54 13908
Mohave Valley 08:13:38 -31.5 Dark Down 28.1 143.5 Low 07:58:38 - 08:28:38 13902
DCO 08:13:32 -31.1 Dark Down 28.6 144.9 Low 07:58:32 - 08:28:32 13895
Lake Havasu City 08:13:37 -31.9 Dark Down 28.5 143.6 Low 07:58:37 - 08:28:37 13878
Idyllwild 08:13:49 -32.9 Dark Down 27.9 141.3 Low 07:58:49 - 08:28:49 13868
Parker 08:13:39 -32.2 Dark Down 28.8 143.6 Low 07:58:39 - 08:28:39 13859
Blythe 08:13:42 -32.8 Dark Down 29.1 143.1 Low 07:58:42 - 08:28:42 13834
Calipatria 08:13:48 -33.4 Dark Down 29.0 142.1 Low 07:58:48 - 08:28:48 13819
Yuma 08:13:44 -33.7 Dark Down 29.8 142.8 Low 07:58:44 - 08:28:44 13783

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 04PX107, (2019/07/01 08:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 23.83 104
32Iot Cap      21:22:14.8 -16:50:04  4.3  1.62 122
PPM 238835     21:26:16.6 -18:08:58  8.2  0.14 122
PPM 238825     21:25:37.8 -18:14:53 10.0  0.04 122
04PX107        21:25:45.3 -18:13:25 16.2       122
Positions are for J2000

Event circumstances last updated at 2017/09/01 16:58:51 UT

Marc W. Buie, Southwest Research Institute

RECON