RECON: TNO occultation with 444018

Event between (444018) 04EU95 and star GA0740:05243714 with event index number of 322691

Geocentric closest approach at 2019/06/18 05:40:52 UTC

J2000 position of star is 14:40:49.9 -14:29:21
Equinox of date position of star is 14:41:54.0 -14:34:18
Stellar brightness G=14.8, use SENSEUP=128
Star is 55 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 42.6 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 16.5 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is 2820 km.
The sky-plane scale is 30328.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 14.6 sec chord
Diameter=97.9 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 444018, (2019/06/18 05:41UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.3 -11:15:44  1.0 18.73  73
27Bet Lib      15:18:03.4 -09:27:13  2.6 10.21  48
5 Lib          14:47:02.3 -15:32:26  6.5  1.57  53
PPM 229140     14:42:22.9 -14:00:40  8.5  0.57  55
PPM 229119     14:41:25.0 -14:28:43  9.8  0.15  55
444018         14:41:54.1 -14:34:19 14.8        55
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 4.0 sigma about the mid-time.
The median site spacing is 10.7 km RECON observability=0.6 and success probability=4.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:41:37 -10.7 NT Up 24.8 192.8 Low 05:26:37 - 05:56:37 -2778
Summerland 05:41:37 -10.8 NT Up 25.1 192.5 Low 05:26:37 - 05:56:37 -2794
Penticton 05:41:36 -10.9 NT Up 25.1 192.7 Low 05:26:36 - 05:56:36 -2796
Okanagan Falls 05:41:37 -11.1 NT Up 25.3 192.7 Low 05:26:37 - 05:56:37 -2804
Oliver 05:41:36 -11.2 NT Up 25.5 192.7 Low 05:26:36 - 05:56:36 -2811
Anarchist Mountain Observatory 05:41:35 -11.4 NT Up 25.6 192.9 Low 05:26:35 - 05:56:35 -2815
Oroville 05:41:35 -11.5 NT Up 25.7 192.8 Low 05:26:35 - 05:56:35 -2820
Tonasket 05:41:35 -11.7 NT Up 25.9 192.9 Low 05:26:35 - 05:56:35 -2830
Okanogan 05:41:35 -11.9 NT Up 26.3 192.7 Low 05:26:35 - 05:56:35 -2847
Brewster 05:41:35 -12.1 AT Up 26.6 192.6 Low 05:26:35 - 05:56:35 -2863
Manson/Chelan 05:41:37 -12.1 AT Up 26.8 192.2 Low 05:26:37 - 05:56:37 -2878
Entiat 05:41:37 -12.3 AT Up 27.1 192.1 Low 05:26:37 - 05:56:37 -2889
Wenatchee 05:41:36 -12.4 AT Up 27.3 192.1 Low 05:26:36 - 05:56:36 -2903
Ellensburg 05:41:37 -12.7 AT Up 27.8 191.9 Low 05:26:37 - 05:56:37 -2926
Pasco 05:41:29 -13.8 AT Up 28.3 193.5 Low 05:26:29 - 05:56:29 -2938
Yakima 05:41:36 -13.0 AT Up 28.2 191.9 Low 05:26:36 - 05:56:36 -2945
PNWRO 05:41:28 -14.1 AT Up 28.5 193.7 Low 05:26:28 - 05:56:28 -2947
Toppenish/White Swan 05:41:35 -13.3 AT Up 28.3 192.1 Low 05:26:35 - 05:56:35 -2953
George/Umatilla 05:41:29 -14.0 AT Up 28.6 193.3 Low 05:26:29 - 05:56:29 -2958
Goldendale 05:41:36 -13.6 AT Up 28.9 191.7 Low 05:26:36 - 05:56:36 -2987
The Dalles 05:41:37 -13.6 AT Up 29.2 191.3 Low 05:26:37 - 05:56:37 -3005
Maupin 05:41:36 -14.0 AT Up 29.6 191.5 Low 05:26:36 - 05:56:36 -3024
Madras/Culver 05:41:35 -14.5 AT Up 30.1 191.5 Up 05:26:35 - 05:56:35 -3053
Niwot 05:40:12 -23.7 Dark Up 30.3 209.3 Up 05:25:12 - 05:55:12 -3062
SwRI 05:40:11 -23.8 Dark Up 30.5 209.2 Up 05:25:11 - 05:55:11 -3069
Redmond 05:41:35 -14.7 AT Up 30.5 191.5 Up 05:26:35 - 05:56:35 -3072
Sisters 05:41:37 -14.6 AT Up 30.5 191.0 Up 05:26:37 - 05:56:37 -3078
Bend 05:41:35 -14.9 AT Up 30.7 191.3 Up 05:26:35 - 05:56:35 -3086
Oregon Observatory 05:41:36 -14.9 AT Up 30.9 191.2 Up 05:26:36 - 05:56:36 -3097
La Pine/Gilchrist 05:41:35 -15.1 AT Up 31.1 191.2 Up 05:26:35 - 05:56:35 -3109
North Lake 05:41:33 -15.7 AT Up 31.5 191.9 Up 05:26:33 - 05:56:33 -3122
Paisley 05:41:29 -16.3 AT Up 32.0 192.4 Up 05:26:29 - 05:56:29 -3145
Lakeview 05:41:27 -16.8 AT Up 32.4 192.6 Up 05:26:27 - 05:56:27 -3170
Chiloquin 05:41:36 -15.9 AT Up 32.3 190.9 Up 05:26:36 - 05:56:36 -3176
Klamath Falls 05:41:34 -16.2 AT Up 32.6 191.0 Up 05:26:34 - 05:56:34 -3193
Tulelake 05:41:32 -16.5 AT Up 32.8 191.4 Up 05:26:32 - 05:56:32 -3203
Cedarville 05:41:26 -17.4 AT Up 33.0 192.9 Up 05:26:26 - 05:56:26 -3204
Fall River/Burney 05:41:31 -17.3 AT Up 33.7 191.6 Up 05:26:31 - 05:56:31 -3253
Susanville 05:41:26 -18.1 Dark Up 34.2 192.5 Up 05:26:26 - 05:56:26 -3276
Gimple 05:41:26 -18.3 Dark Up 34.5 192.3 Up 05:26:26 - 05:56:26 -3296
Greenville 05:41:27 -18.2 Dark Up 34.5 192.2 Up 05:26:27 - 05:56:27 -3298
Portola 05:41:23 -18.7 Dark Up 34.8 192.8 Up 05:26:23 - 05:56:23 -3308
Quincy 05:41:27 -18.4 Dark Up 34.7 192.3 Up 05:26:27 - 05:56:27 -3310
Reno 05:41:20 -19.2 Dark Up 34.9 193.6 Up 05:26:20 - 05:56:20 -3312
Carson City 05:41:19 -19.5 Dark Up 35.3 193.7 Up 05:26:19 - 05:56:19 -3333
Yerington 05:41:16 -19.9 Dark Up 35.3 194.4 Up 05:26:16 - 05:56:16 -3333
Gardnerville 05:41:19 -19.7 Dark Up 35.5 193.8 Up 05:26:19 - 05:56:19 -3347
Hawthorne 05:41:12 -20.5 Dark Up 35.7 195.1 Up 05:26:12 - 05:56:12 -3352
Tonopah 05:41:04 -21.5 Dark Up 35.8 196.8 Up 05:26:04 - 05:56:04 -3356
Lee Vining 05:41:14 -20.8 Dark Up 36.3 194.7 Up 05:26:14 - 05:56:14 -3395
Beatty 05:41:00 -22.7 Dark Up 36.8 197.6 Up 05:26:00 - 05:56:00 -3419
Bishop 05:41:10 -21.6 Dark Up 36.8 195.6 Up 05:26:10 - 05:56:10 -3419
Indian Springs 05:40:54 -23.4 Dark Up 36.9 198.9 Up 05:25:54 - 05:55:54 -3421
Henderson 05:40:50 -24.1 Dark Up 37.2 199.8 Up 05:25:50 - 05:55:50 -3443
Lone Pine 05:41:06 -22.4 Dark Up 37.4 196.2 Up 05:26:06 - 05:56:06 -3461
Patrick 05:40:42 -25.1 Dark Up 37.5 201.3 Up 05:25:42 - 05:55:42 -3465
DCO 05:40:39 -25.7 Dark Up 37.6 202.2 Up 05:25:39 - 05:55:39 -3473
Searchlight/Boulder City 05:40:47 -24.7 Dark Up 37.7 200.0 Up 05:25:47 - 05:55:47 -3479
Kingman/Dolan Springs 05:40:42 -25.2 Dark Up 37.7 201.1 Up 05:25:42 - 05:55:42 -3483
Laughlin/Bullhead City 05:40:45 -25.0 Dark Up 37.9 200.5 Up 05:25:45 - 05:55:45 -3493
Mohave Valley 05:40:44 -25.3 Dark Up 38.2 200.6 Up 05:25:44 - 05:55:44 -3510
Lake Havasu City 05:40:42 -25.7 Dark Up 38.5 201.0 Up 05:25:42 - 05:55:42 -3533
Parker 05:40:41 -26.0 Dark Up 38.8 201.1 Up 05:25:41 - 05:55:41 -3555
CPSLO 05:41:18 -22.3 Dark Up 39.2 193.3 Up 05:26:18 - 05:56:18 -3595
Blythe 05:40:41 -26.4 Dark Up 39.4 200.9 Up 05:25:41 - 05:55:41 -3596
Idyllwild 05:40:52 -25.4 Dark Up 39.8 198.4 Up 05:25:52 - 05:55:52 -3625
Wildwood 05:41:04 -24.2 Dark Up 39.9 196.0 Up 05:26:04 - 05:56:04 -3636
Calipatria 05:40:45 -26.4 Dark Up 40.1 200.0 Up 05:25:45 - 05:55:45 -3645
Yuma 05:40:40 -27.2 Dark Up 40.2 201.1 Up 05:25:40 - 05:55:40 -3659

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 444018, (2019/06/18 05:41UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 18.73  73
27Bet Lib      15:17:00.3 -09:22:59  2.6 10.21  48
5 Lib          14:45:57.7 -15:27:34  6.5  1.57  53
PPM 229140     14:41:18.9 -13:55:43  8.5  0.57  55
PPM 229119     14:40:20.8 -14:23:46  9.8  0.15  55
444018         14:40:49.9 -14:29:21 14.8        55
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:17:05 UT

Marc W. Buie, Southwest Research Institute

RECON