RECON: TNO occultation with 04EG96

Event between 04EG96 and star GA0800:05034902 with event index number of 1074782

Geocentric closest approach at 2021/03/22 11:59:00 UTC

J2000 position of star is 16:08:40.1 -09:10:35
Equinox of date position of star is 16:09:44.1 -09:13:37
Stellar brightness G=10.6, use SENSEUP=4
Star is 138 degrees from the moon. Moon is 59% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 33.3 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 10.7 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 528 seconds.
The 1-sigma cross-track error in the shadow position is 4857 km.
The sky-plane scale is 23783.1 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.9 km assuming a 5% albedo -- 13.3 sec chord
Diameter=58.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 04EG96, (2021/03/22 11:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:42.7 -26:28:38  0.9 17.94 148
1Del Oph       16:15:27.6 -03:44:51  2.7  5.66 136
16 Sco         16:13:16.4 -08:36:03  5.7  1.06 138
PPM 199342     16:10:11.7 -09:42:10  7.9  0.48 138
PPM 199351     16:10:29.4 -09:01:30  9.5  0.26 138
04EG96         16:09:49.4 -09:13:52 10.6       138
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 1.7 sigma about the mid-time.
The median site spacing is 5.4 km RECON observability=1.0 and success probability=3.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
SwRI 12:03:05 -11.8 NT Down 39.2 197.4 Up 11:48:05 - 12:18:05 6568
Kelowna 12:05:08 -18.0 Dark Down 30.9 179.9 Up 11:50:08 - 12:20:08 6163
Penticton 12:05:05 -18.3 Dark Down 31.3 179.7 Up 11:50:05 - 12:20:05 6140
Summerland 12:05:07 -18.3 Dark Down 31.2 179.6 Up 11:50:07 - 12:20:07 6137
Okanagan Falls 12:05:05 -18.3 Dark Down 31.5 179.7 Up 11:50:05 - 12:20:05 6131
Anarchist Mountain Observatory 12:05:00 -18.4 Dark Down 31.8 179.9 Up 11:50:00 - 12:20:00 6129
Oliver 12:05:03 -18.4 Dark Down 31.6 179.7 Up 11:50:03 - 12:20:03 6126
Oroville 12:05:02 -18.4 Dark Down 31.9 179.8 Up 11:50:02 - 12:20:02 6122
Tonasket 12:05:03 -18.5 Dark Down 32.1 179.9 Up 11:50:03 - 12:20:03 6112
Okanogan 12:05:00 -18.8 Dark Down 32.5 179.7 Up 11:50:00 - 12:20:00 6091
Brewster 12:05:03 -19.0 Dark Down 32.7 179.4 Up 11:50:03 - 12:20:03 6068
Manson/Chelan 12:05:00 -19.3 Dark Down 32.9 179.0 Up 11:50:00 - 12:20:00 6039
PNWRO 12:04:49 -19.3 Dark Down 34.8 180.4 Up 11:49:49 - 12:19:49 6028
Pasco 12:04:52 -19.3 Dark Down 34.6 180.2 Up 11:49:52 - 12:19:52 6026
Wenatchee 12:05:01 -19.6 Dark Down 33.4 178.8 Up 11:50:01 - 12:20:01 6010
Ellensburg 12:04:58 -19.9 Dark Down 33.8 178.5 Up 11:49:58 - 12:19:58 5979
Yakima 12:04:59 -20.1 Dark Down 34.2 178.5 Up 11:49:59 - 12:19:59 5960
Toppenish/White Swan 12:04:54 -20.1 Dark Down 34.4 178.7 Up 11:49:54 - 12:19:54 5960
Goldendale 12:04:54 -20.6 Dark Down 35.0 178.1 Up 11:49:54 - 12:19:54 5911
The Dalles 12:04:56 -20.9 Dark Down 35.2 177.7 Up 11:49:56 - 12:19:56 5880
George/Scottsdale 12:03:09 -18.3 Dark Down 46.6 190.1 Up 11:48:09 - 12:18:09 5879
Maupin 12:04:53 -21.0 Dark Down 35.6 177.8 Up 11:49:53 - 12:19:53 5867
Madras/Culver 12:04:52 -21.3 Dark Down 36.2 177.7 Up 11:49:52 - 12:19:52 5839
Patrick 12:03:26 -19.4 Dark Down 45.2 187.1 Up 11:48:26 - 12:18:26 5834
Redmond 12:04:51 -21.4 Dark Down 36.5 177.7 Up 11:49:51 - 12:19:51 5819
Kingman/Dolan Springs 12:03:26 -19.6 Dark Down 45.4 186.8 Up 11:48:26 - 12:18:26 5811
Bend 12:04:49 -21.6 Dark Down 36.7 177.5 Up 11:49:49 - 12:19:49 5800
Sisters 12:04:56 -21.7 Dark Down 36.5 177.2 Up 11:49:56 - 12:19:56 5797
Henderson 12:03:35 -20.1 Dark Down 44.6 185.5 Up 11:48:35 - 12:18:35 5794
North Lake 12:04:46 -21.7 Dark Down 37.6 177.9 Up 11:49:46 - 12:19:46 5785
Oregon Observatory 12:04:49 -21.8 Dark Down 36.9 177.3 Up 11:49:49 - 12:19:49 5784
Paisley 12:04:40 -21.7 Dark Down 38.1 178.3 Up 11:49:40 - 12:19:40 5780
Indian Springs 12:03:42 -20.4 Dark Down 44.1 184.5 Up 11:48:42 - 12:18:42 5777
Laughlin/Bullhead City 12:03:28 -20.0 Dark Down 45.5 186.1 Up 11:48:28 - 12:18:28 5776
La Pine/Gilchrist 12:04:50 -21.9 Dark Down 37.1 177.2 Up 11:49:50 - 12:19:50 5771
Searchlight/Boulder City 12:03:33 -20.2 Dark Down 45.2 185.6 Up 11:48:33 - 12:18:33 5769
Lakeview 12:04:39 -21.8 Dark Down 38.6 178.6 Up 11:49:39 - 12:19:39 5766
Mohave Valley 12:03:27 -20.1 Dark Down 45.7 186.2 Up 11:48:27 - 12:18:27 5762
Lake Havasu City 12:03:23 -20.0 Dark Down 46.1 186.5 Up 11:48:23 - 12:18:23 5758
Tonopah 12:04:00 -21.1 Dark Down 42.7 182.5 Up 11:49:00 - 12:19:00 5754
Cedarville 12:04:33 -21.9 Dark Down 39.3 178.7 Up 11:49:33 - 12:19:33 5745
Parker 12:03:22 -20.1 Dark Down 46.5 186.6 Up 11:48:22 - 12:18:22 5741
Beatty 12:03:51 -21.1 Dark Down 43.9 183.1 Up 11:48:51 - 12:18:51 5724
Chiloquin 12:04:45 -22.6 Dark Down 38.2 176.7 Up 11:49:45 - 12:19:45 5694
Blythe 12:03:21 -20.5 Dark Down 47.0 186.2 Up 11:48:21 - 12:18:21 5694
Hawthorne 12:04:10 -21.9 Dark Down 42.3 180.6 Up 11:49:10 - 12:19:10 5689
Tulelake 12:04:44 -22.6 Dark Down 38.8 177.2 Up 11:49:44 - 12:19:44 5687
Klamath Falls 12:04:42 -22.7 Dark Down 38.5 176.8 Up 11:49:42 - 12:19:42 5682
Yerington 12:04:16 -22.2 Dark Down 41.8 179.9 Up 11:49:16 - 12:19:16 5679
Reno 12:04:21 -22.4 Dark Down 41.3 179.1 Up 11:49:21 - 12:19:21 5666
Susanville 12:04:31 -22.7 Dark Down 40.4 178.1 Up 11:49:31 - 12:19:31 5659
Carson City 12:04:21 -22.5 Dark Down 41.6 179.1 Up 11:49:21 - 12:19:21 5649
Fall River/Burney 12:04:37 -22.9 Dark Down 39.7 177.2 Up 11:49:37 - 12:19:37 5645
Bishop 12:04:02 -22.2 Dark Down 43.5 180.9 Up 11:49:02 - 12:19:02 5643
Yuma 12:03:14 -20.8 Dark Down 47.9 186.2 Up 11:48:14 - 12:18:14 5642
Gardnerville 12:04:17 -22.6 Dark Down 41.9 179.2 Up 11:49:17 - 12:19:17 5640
Portola 12:04:26 -22.8 Dark Down 41.0 178.3 Up 11:49:26 - 12:19:26 5640
Gimple 12:04:28 -22.9 Dark Down 40.7 177.8 Up 11:49:28 - 12:19:28 5632
Lee Vining 12:04:10 -22.5 Dark Down 42.9 180.0 Up 11:49:10 - 12:19:10 5628
Greenville 12:04:28 -23.0 Dark Down 40.7 177.7 Up 11:49:28 - 12:19:28 5627
Lone Pine 12:03:56 -22.2 Dark Down 44.2 181.3 Up 11:48:56 - 12:18:56 5625
Quincy 12:04:29 -23.1 Dark Down 40.9 177.7 Up 11:49:29 - 12:19:29 5616
Calipatria 12:03:24 -21.3 Dark Down 47.6 184.9 Up 11:48:24 - 12:18:24 5605
Idyllwild 12:03:35 -22.1 Dark Down 47.0 183.2 Up 11:48:35 - 12:18:35 5559
Wildwood 12:03:47 -23.4 Dark Down 46.7 180.6 Up 11:48:47 - 12:18:47 5453
CPSLO 12:04:03 -24.6 Dark Down 45.5 177.7 Up 11:49:03 - 12:19:03 5384

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 04EG96, (2021/03/22 11:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.94 148
1Del Oph       16:14:20.7 -03:41:42  2.7  5.66 136
16 Sco         16:12:07.4 -08:32:51  5.7  1.06 138
PPM 199342     16:09:02.1 -09:38:53  7.9  0.48 138
PPM 199351     16:09:20.2 -08:58:13  9.5  0.26 138
04EG96         16:08:40.1 -09:10:35 10.6       138
Positions are for J2000

Event circumstances last updated at 2019/08/03 22:24:20 UT

Marc W. Buie, Southwest Research Institute

RECON