RECON: TNO occultation with 44594

Event between (44594) 99OX3 and star UC4-491-001256 with event index number of 149084

Geocentric closest approach at 2018/08/11 10:23:41 UTC

J2000 position of star is 00:50:39.1 +08:08:05
Equinox of date position of star is 00:51:35.0 +08:13:56
Stellar brightness R=14.8, use SENSEUP=128
Star is 124 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=19.9

[RECON map]
TNO is 18.4 AU from the Sun and 17.9 AU from the Earth.
The TNO is moving 8.4 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 123 seconds.
The 1-sigma cross-track error in the shadow position is 798 km.
The sky-plane scale is 12948.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 27.4 sec chord
Diameter=93.5 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 44594, (2018/08/11 10:24UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:11.8 +15:17:13  2.8 11.55 128
63Del Psc      00:49:39.0 +07:41:10  4.4  0.73 125
PPM 143969     00:51:53.7 +08:08:48  8.2  0.11 124
44594          00:51:37.2 +08:14:09 14.8       124
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 20.0 km RECON observability=1.0 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 10:23:44 -18.7 Dark Down 47.0 155.9 Up 10:13:01 - 10:34:27 6210
Tonasket 10:23:45 -18.9 Dark Down 47.2 155.8 Up 10:13:02 - 10:34:28 6192
Okanogan 10:23:48 -19.2 Dark Down 47.4 155.5 Up 10:13:05 - 10:34:31 6171
Brewster 10:23:52 -19.5 Dark Down 47.6 155.1 Up 10:13:09 - 10:34:35 6155
Manson/Chelan 10:23:55 -19.8 Dark Down 47.7 154.5 Up 10:13:12 - 10:34:38 6148
Entiat 10:23:57 -20.0 Dark Down 47.9 154.3 Up 10:13:14 - 10:34:40 6133
Wenatchee 10:23:59 -20.2 Dark Down 48.1 154.1 Up 10:13:16 - 10:34:42 6116
Ellensburg 10:24:03 -20.6 Dark Down 48.4 153.6 Up 10:13:20 - 10:34:46 6090
Yakima 10:24:05 -21.0 Dark Down 48.8 153.4 Up 10:13:22 - 10:34:48 6059
Toppenish/White Swan 10:24:05 -21.1 Dark Down 49.0 153.5 Up 10:13:22 - 10:34:48 6038
Goldendale 10:24:11 -21.7 Dark Down 49.4 152.6 Up 10:13:28 - 10:34:54 6006
Pasco 10:23:56 -20.7 Dark Down 49.5 155.2 Up 10:13:13 - 10:34:39 5999
The Dalles 10:24:16 -22.0 Dark Down 49.5 152.0 Up 10:13:33 - 10:34:59 5997
George/Umatilla 10:23:59 -21.0 Dark Down 49.7 154.8 Up 10:13:16 - 10:34:42 5978
PNWRO 10:23:55 -20.8 Dark Down 49.8 155.4 Up 10:13:12 - 10:34:38 5975
Maupin 10:24:18 -22.3 Dark Down 49.9 151.9 Up 10:13:35 - 10:35:01 5962
Madras/Culver 10:24:22 -22.8 Dark Down 50.4 151.6 Up 10:13:39 - 10:35:05 5920
Sisters 10:24:27 -23.2 Dark Down 50.5 150.8 Up 10:13:44 - 10:35:10 5905
Redmond 10:24:24 -23.1 Dark Down 50.7 151.3 Up 10:13:41 - 10:35:07 5893
Bend 10:24:25 -23.3 Dark Down 50.8 151.0 Up 10:13:42 - 10:35:08 5879
Oregon Observatory 10:24:29 -23.5 Dark Down 50.9 150.7 Up 10:13:46 - 10:35:12 5869
La Pine/Gilchrist 10:24:30 -23.7 Dark Down 51.1 150.5 Up 10:13:47 - 10:35:13 5854
North Lake 10:24:28 -23.8 Dark Down 51.7 151.1 Up 10:13:45 - 10:35:11 5804
Chiloquin 10:24:39 -24.7 Dark Down 51.9 149.4 Up 10:13:56 - 10:35:22 5773
Paisley 10:24:27 -24.1 Dark Down 52.3 151.3 Up 10:13:44 - 10:35:10 5751
Klamath Falls 10:24:41 -25.0 Dark Down 52.2 149.3 Up 10:13:58 - 10:35:24 5744
Tulelake 10:24:40 -25.1 Dark Down 52.6 149.5 Up 10:13:57 - 10:35:23 5714
Lakeview 10:24:29 -24.4 Dark Down 52.8 151.3 Up 10:13:46 - 10:35:12 5704
Cedarville 10:24:30 -24.9 Dark Down 53.4 151.2 Up 10:13:47 - 10:35:13 5646
Fall River/Burney 10:24:43 -25.8 Dark Down 53.4 149.1 Up 10:14:00 - 10:35:26 5637
Susanville 10:24:41 -25.9 Dark Down 54.2 149.8 Up 10:13:58 - 10:35:24 5565
Greenville 10:24:45 -26.3 Dark Down 54.4 149.1 Up 10:14:02 - 10:35:28 5550
Gimple 10:24:44 -26.3 Dark Down 54.4 149.2 Up 10:14:01 - 10:35:27 5547
Quincy 10:24:46 -26.4 Dark Down 54.5 149.0 Up 10:14:03 - 10:35:29 5532
Portola 10:24:42 -26.3 Dark Down 54.8 149.6 Up 10:13:59 - 10:35:25 5509
Reno 10:24:38 -26.2 Dark Down 55.3 150.4 Up 10:13:55 - 10:35:21 5470
Carson City 10:24:40 -26.5 Dark Down 55.6 150.2 Up 10:13:57 - 10:35:23 5439
Gardnerville 10:24:40 -26.7 Dark Down 55.8 150.1 Up 10:13:57 - 10:35:23 5416
Yerington 10:24:35 -26.4 Dark Down 56.0 151.1 Up 10:13:52 - 10:35:18 5405
Hawthorne 10:24:33 -26.5 Dark Down 56.6 151.6 Up 10:13:50 - 10:35:16 5351
Lee Vining 10:24:41 -27.1 Dark Down 56.9 150.4 Up 10:13:58 - 10:35:24 5315
Tonopah 10:24:22 -26.1 Dark Down 57.5 153.6 Up 10:13:39 - 10:35:05 5273
Bishop 10:24:36 -27.2 Dark Down 57.7 151.2 Up 10:13:53 - 10:35:19 5243
Lone Pine 10:24:37 -27.6 Dark Down 58.5 151.2 Up 10:13:54 - 10:35:20 5167
Beatty 10:24:23 -26.8 Dark Down 58.7 153.6 Up 10:13:40 - 10:35:06 5159
Niwot 10:22:20 -18.3 Dark Down 58.0 175.5 Up 10:11:37 - 10:33:03 5151
CPSLO 10:25:09 -29.9 Dark Down 58.6 145.8 Up 10:14:26 - 10:35:52 5122
Indian Springs 10:24:14 -26.4 Dark Down 59.4 155.2 Up 10:13:31 - 10:34:57 5101
Henderson 10:24:11 -26.4 Dark Down 60.1 156.1 Up 10:13:28 - 10:34:54 5034
Searchlight/Boulder City 10:24:12 -26.8 Dark Down 60.7 155.8 Up 10:13:29 - 10:34:55 4980
Wildwood 10:24:55 -29.8 Dark Down 60.5 148.2 Up 10:14:12 - 10:35:38 4956
Patrick 10:24:02 -26.3 Dark Down 61.0 157.7 Up 10:13:19 - 10:34:45 4947
Laughlin/Bullhead City 10:24:11 -26.8 Dark Down 61.0 156.3 Up 10:13:28 - 10:34:54 4944
Kingman/Dolan Springs 10:24:06 -26.5 Dark Down 61.2 157.3 Up 10:13:23 - 10:34:49 4932
Mohave Valley 10:24:12 -27.0 Dark Down 61.3 156.1 Up 10:13:29 - 10:34:55 4919
DCO 10:23:56 -26.1 Dark Down 61.5 158.9 Up 10:13:13 - 10:34:39 4900
Lake Havasu City 10:24:11 -27.2 Dark Down 61.7 156.3 Up 10:13:28 - 10:34:54 4875
Idyllwild 10:24:38 -29.0 Dark Down 61.6 151.2 Up 10:13:55 - 10:35:21 4871
Parker 10:24:12 -27.4 Dark Down 62.1 156.1 Up 10:13:29 - 10:34:55 4842
Blythe 10:24:18 -27.9 Dark Down 62.5 155.1 Up 10:13:35 - 10:35:01 4801
Calipatria 10:24:29 -28.8 Dark Down 62.6 152.9 Up 10:13:46 - 10:35:12 4782
Yuma 10:24:22 -28.6 Dark Down 63.3 154.3 Up 10:13:39 - 10:35:05 4716

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 44594, (2018/08/11 10:24UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 11.55 128
63Del Psc      00:48:41.1 +07:35:05  4.4  0.73 125
PPM 143969     00:50:55.7 +08:02:45  8.2  0.11 124
44594          00:50:39.1 +08:08:05 14.8       124
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:52:04 UT

Marc W. Buie, Southwest Research Institute

RECON