RECON: TNO occultation with 444025

Event between (444025) 04HJ79 and star GA0740:05249271 with event index number of 205844

Geocentric closest approach at 2019/07/09 04:18:32 UTC

J2000 position of star is 14:42:13.3 -15:40:20
Equinox of date position of star is 14:43:14.5 -15:45:00
Stellar brightness G=16.2, use SENSEUP=128
Star is 30 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 44.4 AU from the Sun and 43.9 AU from the Earth.
The TNO is moving 8.6 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 366 seconds.
The 1-sigma cross-track error in the shadow position is 1916 km.
The sky-plane scale is 31837.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 29.2 sec chord
Diameter=102.6 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 444025, (2019/07/09 04:19UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.4 -11:15:45  1.0 19.26  13
27Bet Lib      15:18:03.6 -09:27:14  2.6 10.56  36
5 Lib          14:47:02.5 -15:32:27  6.5  0.93  31
PPM 229130     14:41:58.6 -15:24:12  8.5  0.47  30
PPM 229178     14:43:38.0 -15:55:12  9.7  0.18  30
444025         14:43:18.1 -15:45:16 16.2        31
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 2.5 sigma about the mid-time.
The median site spacing is 48.7 km RECON observability=0.1 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 04:18:14 -2.5 CT Up 24.0 191.9 Low 04:03:14 - 04:33:14 13224
Oroville 04:18:12 -2.9 CT Up 24.6 192.1 Low 04:03:12 - 04:33:12 13201
Tonasket 04:18:11 -3.1 CT Up 24.8 192.1 Low 04:03:11 - 04:33:11 13191
Okanogan 04:18:11 -3.2 CT Up 25.2 192.0 Low 04:03:11 - 04:33:11 13175
Brewster 04:18:12 -3.3 CT Up 25.5 191.8 Low 04:03:12 - 04:33:12 13160
Manson/Chelan 04:18:11 -3.2 CT Up 25.7 191.4 Low 04:03:11 - 04:33:11 13145
Entiat 04:18:12 -3.3 CT Up 26.0 191.4 Low 04:03:12 - 04:33:12 13134
Wenatchee 04:18:14 -3.4 CT Up 26.2 191.3 Low 04:03:14 - 04:33:14 13121
Ellensburg 04:18:16 -3.6 CT Up 26.7 191.1 Low 04:03:16 - 04:33:16 13098
Pasco 04:18:02 -4.8 CT Up 27.2 192.6 Low 04:03:02 - 04:33:02 13087
Yakima 04:18:17 -3.8 CT Up 27.1 191.1 Low 04:03:17 - 04:33:17 13079
PNWRO 04:17:57 -5.0 CT Up 27.4 192.9 Low 04:02:57 - 04:32:57 13079
Toppenish/White Swan 04:18:10 -4.0 CT Up 27.2 191.3 Low 04:03:10 - 04:33:10 13072
George/Umatilla 04:18:00 -4.9 CT Up 27.5 192.4 Low 04:03:00 - 04:33:00 13068
Goldendale 04:18:12 -4.2 CT Up 27.8 190.9 Low 04:03:12 - 04:33:12 13039
The Dalles 04:18:14 -4.1 CT Up 28.1 190.5 Low 04:03:14 - 04:33:14 13022
Maupin 04:18:14 -4.4 CT Up 28.5 190.7 Low 04:03:14 - 04:33:14 13004
Madras/Culver 04:18:12 -4.7 CT Up 29.1 190.7 Low 04:03:12 - 04:33:12 12976
Niwot 04:15:42 -16.0 AT Up 29.6 207.9 Low 04:00:42 - 04:30:42 12969
Redmond 04:18:10 -4.9 CT Up 29.4 190.7 Low 04:03:10 - 04:33:10 12957
Sisters 04:18:12 -4.7 CT Up 29.4 190.2 Low 04:03:12 - 04:33:12 12951
Bend 04:18:11 -5.0 CT Up 29.6 190.5 Low 04:03:11 - 04:33:11 12943
Oregon Observatory 04:18:09 -5.0 CT Up 29.8 190.4 Low 04:03:09 - 04:33:09 12932
La Pine/Gilchrist 04:18:10 -5.1 CT Up 30.0 190.4 Up 04:03:10 - 04:33:10 12921
North Lake 04:18:10 -5.7 CT Up 30.4 191.1 Up 04:03:10 - 04:33:10 12909
Paisley 04:17:59 -6.2 CT Up 30.9 191.5 Up 04:02:59 - 04:32:59 12886
Lakeview 04:17:56 -6.6 CT Up 31.4 191.7 Up 04:02:56 - 04:32:56 12862
Chiloquin 04:18:10 -5.6 CT Up 31.2 190.1 Up 04:03:10 - 04:33:10 12856
Klamath Falls 04:18:07 -5.8 CT Up 31.5 190.2 Up 04:03:07 - 04:33:07 12839
Tulelake 04:18:04 -6.1 CT Up 31.7 190.5 Up 04:03:04 - 04:33:04 12830
Cedarville 04:17:52 -7.2 CT Up 32.0 192.0 Up 04:02:52 - 04:32:52 12830
Fall River/Burney 04:18:03 -6.8 CT Up 32.6 190.7 Up 04:03:03 - 04:33:03 12781
Susanville 04:17:55 -7.6 CT Up 33.1 191.6 Up 04:02:55 - 04:32:55 12759
Gimple 04:17:53 -7.6 CT Up 33.4 191.4 Up 04:02:53 - 04:32:53 12739
Greenville 04:17:56 -7.6 CT Up 33.4 191.3 Up 04:02:56 - 04:32:56 12738
Portola 04:17:46 -8.0 CT Up 33.7 191.9 Up 04:02:46 - 04:32:46 12728
Quincy 04:17:52 -7.7 CT Up 33.6 191.3 Up 04:02:52 - 04:32:52 12726
Reno 04:17:44 -8.6 CT Up 33.9 192.6 Up 04:02:44 - 04:32:44 12724
Carson City 04:17:41 -8.8 CT Up 34.2 192.7 Up 04:02:41 - 04:32:41 12704
Yerington 04:17:35 -9.3 CT Up 34.3 193.4 Up 04:02:35 - 04:32:35 12703
Gardnerville 04:17:42 -9.0 CT Up 34.4 192.8 Up 04:02:42 - 04:32:42 12690
Hawthorne 04:17:29 -9.9 CT Up 34.6 194.1 Up 04:02:29 - 04:32:29 12686
Tonopah 04:17:11 -11.0 CT Up 34.8 195.7 Up 04:02:11 - 04:32:11 12682
Lee Vining 04:17:34 -10.0 CT Up 35.3 193.6 Up 04:02:34 - 04:32:34 12643
Beatty 04:17:07 -12.0 AT Up 35.8 196.4 Up 04:02:07 - 04:32:07 12620
Bishop 04:17:23 -10.8 CT Up 35.7 194.5 Up 04:02:23 - 04:32:23 12620
Indian Springs 04:16:56 -12.9 AT Up 35.9 197.7 Up 04:01:56 - 04:31:56 12618
Henderson 04:16:47 -13.6 AT Up 36.3 198.6 Up 04:01:47 - 04:31:47 12596
Lone Pine 04:17:18 -11.4 CT Up 36.4 195.0 Up 04:02:18 - 04:32:18 12579
Patrick 04:16:34 -14.7 AT Up 36.6 200.0 Up 04:01:34 - 04:31:34 12575
DCO 04:16:25 -15.3 AT Up 36.7 200.8 Up 04:01:25 - 04:31:25 12567
Searchlight/Boulder City 04:16:44 -14.0 AT Up 36.8 198.8 Up 04:01:44 - 04:31:44 12561
Kingman/Dolan Springs 04:16:34 -14.7 AT Up 36.8 199.8 Up 04:01:34 - 04:31:34 12558
Laughlin/Bullhead City 04:16:39 -14.4 AT Up 37.0 199.2 Up 04:01:39 - 04:31:39 12548
Mohave Valley 04:16:38 -14.6 AT Up 37.2 199.3 Up 04:01:38 - 04:31:38 12531
Lake Havasu City 04:16:34 -15.0 AT Up 37.6 199.7 Up 04:01:34 - 04:31:34 12509
Parker 04:16:32 -15.3 AT Up 37.9 199.8 Up 04:01:32 - 04:31:32 12487
CPSLO 04:17:36 -10.6 CT Up 38.1 192.3 Up 04:02:36 - 04:32:36 12448
Blythe 04:16:32 -15.4 AT Up 38.5 199.6 Up 04:01:32 - 04:31:32 12448
Idyllwild 04:16:54 -14.1 AT Up 38.9 197.1 Up 04:01:54 - 04:31:54 12418
Wildwood 04:17:14 -12.7 AT Up 38.9 194.9 Up 04:02:14 - 04:32:14 12408
Calipatria 04:16:41 -15.2 AT Up 39.2 198.6 Up 04:01:41 - 04:31:41 12399
Yuma 04:16:30 -16.0 AT Up 39.3 199.8 Up 04:01:30 - 04:31:30 12385

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 444025, (2019/07/09 04:19UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 19.26  13
27Bet Lib      15:17:00.3 -09:22:59  2.6 10.56  36
5 Lib          14:45:57.7 -15:27:34  6.5  0.93  31
PPM 229130     14:40:54.0 -15:19:14  8.5  0.47  30
PPM 229178     14:42:33.1 -15:50:16  9.7  0.18  30
444025         14:42:13.3 -15:40:20 16.2        30
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:23:01 UT

Marc W. Buie, Southwest Research Institute

RECON