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 00:51:33.3 +08:13:45
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 137 seconds.
The 1-sigma cross-track error in the shadow position is 852 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 20.1 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 10:23:41 -18.7 Dark Down 46.9 155.9 Up 10:11:48 - 10:35:35 6204
Tonasket 10:23:42 -18.9 Dark Down 47.2 155.8 Up 10:11:48 - 10:35:35 6186
Okanogan 10:23:45 -19.2 Dark Down 47.4 155.5 Up 10:11:52 - 10:35:39 6165
Brewster 10:23:49 -19.5 Dark Down 47.6 155.1 Up 10:11:56 - 10:35:43 6149
Manson/Chelan 10:23:53 -19.8 Dark Down 47.7 154.5 Up 10:11:59 - 10:35:46 6142
Entiat 10:23:55 -20.0 Dark Down 47.9 154.3 Up 10:12:02 - 10:35:49 6126
Wenatchee 10:23:57 -20.2 Dark Down 48.1 154.1 Up 10:12:03 - 10:35:50 6110
Ellensburg 10:24:01 -20.7 Dark Down 48.4 153.6 Up 10:12:07 - 10:35:54 6083
Yakima 10:24:04 -21.0 Dark Down 48.8 153.4 Up 10:12:10 - 10:35:57 6053
Toppenish/White Swan 10:24:04 -21.1 Dark Down 49.0 153.5 Up 10:12:10 - 10:35:57 6032
Goldendale 10:24:10 -21.7 Dark Down 49.4 152.6 Up 10:12:16 - 10:36:03 5999
Pasco 10:23:52 -20.7 Dark Down 49.5 155.2 Up 10:11:59 - 10:35:46 5993
The Dalles 10:24:14 -22.0 Dark Down 49.5 152.0 Up 10:12:21 - 10:36:08 5990
George/Umatilla 10:23:56 -21.0 Dark Down 49.7 154.7 Up 10:12:02 - 10:35:49 5972
PNWRO 10:23:53 -20.8 Dark Down 49.8 155.4 Up 10:11:59 - 10:35:46 5968
Maupin 10:24:15 -22.3 Dark Down 49.9 151.9 Up 10:12:22 - 10:36:09 5955
Madras/Culver 10:24:20 -22.8 Dark Down 50.3 151.6 Up 10:12:26 - 10:36:13 5914
Sisters 10:24:25 -23.2 Dark Down 50.5 150.8 Up 10:12:31 - 10:36:18 5898
Redmond 10:24:21 -23.1 Dark Down 50.6 151.3 Up 10:12:27 - 10:36:14 5887
Bend 10:24:24 -23.3 Dark Down 50.8 151.0 Up 10:12:30 - 10:36:17 5873
Oregon Observatory 10:24:25 -23.5 Dark Down 50.9 150.7 Up 10:12:32 - 10:36:19 5863
La Pine/Gilchrist 10:24:27 -23.7 Dark Down 51.1 150.5 Up 10:12:34 - 10:36:21 5848
North Lake 10:24:25 -23.8 Dark Down 51.6 151.1 Up 10:12:31 - 10:36:18 5798
Chiloquin 10:24:36 -24.7 Dark Down 51.9 149.3 Up 10:12:43 - 10:36:30 5767
Paisley 10:24:25 -24.1 Dark Down 52.3 151.3 Up 10:12:32 - 10:36:19 5744
Klamath Falls 10:24:38 -25.0 Dark Down 52.2 149.2 Up 10:12:44 - 10:36:31 5737
Tulelake 10:24:37 -25.1 Dark Down 52.6 149.5 Up 10:12:44 - 10:36:31 5707
Lakeview 10:24:25 -24.4 Dark Down 52.8 151.3 Up 10:12:32 - 10:36:19 5698
Cedarville 10:24:28 -24.9 Dark Down 53.4 151.2 Up 10:12:34 - 10:36:21 5639
Fall River/Burney 10:24:41 -25.8 Dark Down 53.4 149.0 Up 10:12:48 - 10:36:35 5630
Susanville 10:24:39 -25.9 Dark Down 54.2 149.7 Up 10:12:45 - 10:36:32 5559
Greenville 10:24:41 -26.3 Dark Down 54.3 149.1 Up 10:12:48 - 10:36:35 5543
Gimple 10:24:42 -26.3 Dark Down 54.4 149.2 Up 10:12:48 - 10:36:35 5541
Quincy 10:24:43 -26.4 Dark Down 54.5 149.0 Up 10:12:50 - 10:36:37 5526
Portola 10:24:40 -26.3 Dark Down 54.8 149.6 Up 10:12:46 - 10:36:33 5503
Reno 10:24:36 -26.2 Dark Down 55.3 150.4 Up 10:12:42 - 10:36:29 5463
Carson City 10:24:37 -26.5 Dark Down 55.6 150.2 Up 10:12:44 - 10:36:31 5432
Gardnerville 10:24:37 -26.7 Dark Down 55.8 150.1 Up 10:12:44 - 10:36:31 5410
Yerington 10:24:32 -26.4 Dark Down 56.0 151.1 Up 10:12:38 - 10:36:25 5399
Hawthorne 10:24:29 -26.5 Dark Down 56.6 151.6 Up 10:12:36 - 10:36:23 5345
Lee Vining 10:24:37 -27.1 Dark Down 56.9 150.4 Up 10:12:44 - 10:36:31 5309
Tonopah 10:24:20 -26.1 Dark Down 57.5 153.6 Up 10:12:26 - 10:36:13 5267
Bishop 10:24:33 -27.2 Dark Down 57.7 151.2 Up 10:12:40 - 10:36:27 5237
Lone Pine 10:24:34 -27.6 Dark Down 58.5 151.1 Up 10:12:40 - 10:36:27 5160
Beatty 10:24:21 -26.8 Dark Down 58.7 153.6 Up 10:12:27 - 10:36:14 5152
Niwot 10:22:17 -18.3 Dark Down 58.0 175.5 Up 10:10:23 - 10:34:10 5146
CPSLO 10:25:06 -29.9 Dark Down 58.6 145.8 Up 10:13:12 - 10:36:59 5114
Indian Springs 10:24:11 -26.4 Dark Down 59.4 155.2 Up 10:12:18 - 10:36:05 5094
Henderson 10:24:07 -26.5 Dark Down 60.1 156.1 Up 10:12:14 - 10:36:01 5027
Searchlight/Boulder City 10:24:09 -26.8 Dark Down 60.6 155.8 Up 10:12:15 - 10:36:02 4973
Wildwood 10:24:52 -29.8 Dark Down 60.5 148.2 Up 10:12:59 - 10:36:46 4948
Patrick 10:24:00 -26.3 Dark Down 61.0 157.7 Up 10:12:06 - 10:35:53 4940
Laughlin/Bullhead City 10:24:08 -26.9 Dark Down 61.0 156.3 Up 10:12:15 - 10:36:02 4936
Kingman/Dolan Springs 10:24:02 -26.6 Dark Down 61.2 157.2 Up 10:12:08 - 10:35:55 4925
Mohave Valley 10:24:09 -27.0 Dark Down 61.3 156.1 Up 10:12:16 - 10:36:03 4911
DCO 10:23:54 -26.1 Dark Down 61.5 158.9 Up 10:12:00 - 10:35:47 4893
Lake Havasu City 10:24:09 -27.2 Dark Down 61.7 156.3 Up 10:12:15 - 10:36:02 4868
Idyllwild 10:24:36 -29.0 Dark Down 61.6 151.2 Up 10:12:42 - 10:36:29 4864
Parker 10:24:09 -27.4 Dark Down 62.1 156.1 Up 10:12:16 - 10:36:03 4834
Blythe 10:24:15 -27.9 Dark Down 62.4 155.1 Up 10:12:22 - 10:36:09 4794
Calipatria 10:24:26 -28.8 Dark Down 62.6 152.9 Up 10:12:32 - 10:36:19 4774
Yuma 10:24:20 -28.6 Dark Down 63.3 154.3 Up 10:12:26 - 10:36:13 4708

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      00:48:41.0 +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 2017/05/19 18:01:30 UT

Marc W. Buie, Southwest Research Institute

RECON