RECON: TNO occultation with 03UT292

Event between 03UT292 and star UC4-495-012448 with event index number of 104158

Geocentric closest approach at 2018/02/26 03:01:18 UTC

J2000 position of star is 05:29:51.7 +08:52:13
Equinox of date position of star is 05:30:50.5 +08:52:59
Stellar brightness R=15.1, use SENSEUP=128
Star is 25 degrees from the moon. Moon is 80% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 28.1 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 6.3 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 900 seconds.
The 1-sigma cross-track error in the shadow position is 5293 km.
The sky-plane scale is 20201.2 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=252.4 km assuming a 5% albedo -- 40.0 sec chord
Diameter=103.0 km assuming a 30% albedo -- 16.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03UT292, (2018/02/26 03:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:09.3 +07:24:32  0.4  6.43  20
Bellatrix      05:26:06.3 +06:21:53  1.6  2.78  27
PPM 149168     05:36:12.7 +09:37:26  6.3  1.52  23
PPM 149064     05:31:46.8 +08:24:43  8.4  0.52  25
PPM 149014     05:29:56.5 +08:49:03  9.4  0.24  25
PPM 149022     05:30:11.0 +08:55:31 10.7  0.17  25
03UT292        05:30:51.3 +08:53:00 15.1        25
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 1.0 sigma about the mid-time.
The median site spacing is 6.4 km RECON observability=1.0 and success probability=4.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 03:07:11 -27.2 Dark Up 56.0 207.4 Up 02:52:11 - 03:22:11 7811
DCO 03:06:29 -21.6 Dark Up 63.0 195.2 Up 02:51:29 - 03:21:29 7029
Oroville 03:10:25 -16.4 AT Up 49.9 182.5 Up 02:55:25 - 03:25:25 7023
Tonasket 03:10:24 -16.4 AT Up 50.1 182.5 Up 02:55:24 - 03:25:24 7015
Okanogan 03:10:21 -16.3 AT Up 50.5 182.3 Up 02:55:21 - 03:25:21 6994
Patrick 03:06:39 -21.0 Dark Up 62.8 193.7 Up 02:51:39 - 03:21:39 6981
Brewster 03:10:17 -16.2 AT Up 50.8 181.9 Up 02:55:17 - 03:25:17 6971
PNWRO 03:09:39 -16.9 AT Up 52.8 183.2 Up 02:54:39 - 03:24:39 6962
Kingman/Dolan Springs 03:06:39 -20.8 Dark Up 63.1 193.3 Up 02:51:39 - 03:21:39 6957
Pasco 03:09:46 -16.7 AT Up 52.6 182.9 Up 02:54:46 - 03:24:46 6954
Manson/Chelan 03:10:07 -16.0 AT Up 51.0 181.3 Up 02:55:07 - 03:25:07 6939
George/Umatilla 03:09:46 -16.6 AT Up 52.9 182.6 Up 02:54:46 - 03:24:46 6927
Entiat 03:10:14 -16.0 AT Up 51.2 181.2 Up 02:55:14 - 03:25:14 6926
Laughlin/Bullhead City 03:06:43 -20.4 Dark Up 63.2 192.3 Up 02:51:43 - 03:21:43 6913
Henderson 03:07:02 -20.1 Dark Up 62.4 191.2 Up 02:52:02 - 03:22:02 6911
Wenatchee 03:10:07 -15.9 AT Up 51.5 181.1 Up 02:55:07 - 03:25:07 6910
Lake Havasu City 03:06:36 -20.7 Dark Up 63.8 193.1 Up 02:51:36 - 03:21:36 6910
Mohave Valley 03:06:36 -20.4 Dark Up 63.5 192.3 Up 02:51:36 - 03:21:36 6904
Parker 03:06:32 -20.7 Dark Up 64.2 193.3 Up 02:51:32 - 03:21:32 6900
Searchlight/Boulder City 03:06:49 -20.2 Dark Up 63.0 191.5 Up 02:51:49 - 03:21:49 6896
Ellensburg 03:10:07 -15.8 AT Up 51.9 180.7 Up 02:55:07 - 03:25:07 6881
Indian Springs 03:07:14 -19.6 Dark Up 62.0 189.7 Up 02:52:14 - 03:22:14 6874
Toppenish/White Swan 03:10:00 -15.9 AT Up 52.5 180.9 Up 02:55:00 - 03:25:00 6869
Yakima 03:10:00 -15.8 AT Up 52.3 180.6 Up 02:55:00 - 03:25:00 6865
Blythe 03:06:20 -20.4 Dark Up 64.7 192.7 Up 02:51:20 - 03:21:20 6855
Goldendale 03:09:50 -15.6 AT Up 53.0 180.2 Up 02:54:50 - 03:24:50 6819
Yuma 03:06:01 -20.4 Dark Up 65.7 192.9 Up 02:51:01 - 03:21:01 6817
Tonopah 03:07:39 -18.3 Dark Up 60.7 186.4 Up 02:52:39 - 03:22:39 6804
Beatty 03:07:18 -18.7 Dark Up 61.8 187.4 Up 02:52:18 - 03:22:18 6798
The Dalles 03:09:47 -15.4 AT Up 53.3 179.5 Up 02:54:47 - 03:24:47 6784
Maupin 03:09:39 -15.4 AT Up 53.7 179.7 Up 02:54:39 - 03:24:39 6776
Calipatria 03:06:22 -19.7 Dark Up 65.4 190.8 Up 02:51:22 - 03:21:22 6757
Madras/Culver 03:09:32 -15.4 AT Up 54.2 179.5 Up 02:54:32 - 03:24:32 6753
Redmond 03:09:28 -15.4 AT Up 54.6 179.4 Up 02:54:28 - 03:24:28 6736
Paisley 03:09:07 -15.8 AT Up 56.2 180.4 Up 02:54:07 - 03:24:07 6722
Bend 03:09:29 -15.3 AT Up 54.8 179.2 Up 02:54:29 - 03:24:29 6717
Lakeview 03:09:00 -16.0 AT Up 56.7 180.6 Up 02:54:00 - 03:24:00 6717
North Lake 03:09:13 -15.6 AT Up 55.6 179.8 Up 02:54:13 - 03:24:13 6716
Hawthorne 03:07:58 -17.3 AT Up 60.3 183.6 Up 02:52:58 - 03:22:58 6709
Sisters 03:09:32 -15.1 AT Up 54.6 178.8 Up 02:54:32 - 03:24:32 6707
Cedarville 03:08:46 -16.1 AT Up 57.3 180.9 Up 02:53:46 - 03:23:46 6705
Oregon Observatory 03:09:29 -15.2 AT Up 55.0 178.9 Up 02:54:29 - 03:24:29 6701
La Pine/Gilchrist 03:09:25 -15.2 AT Up 55.2 178.8 Up 02:54:25 - 03:24:25 6688
Yerington 03:08:06 -16.9 AT Up 59.9 182.6 Up 02:53:06 - 03:23:06 6685
Bishop 03:07:33 -17.4 AT Up 61.5 184.0 Up 02:52:33 - 03:22:33 6683
Lone Pine 03:07:27 -17.7 AT Up 62.2 184.8 Up 02:52:27 - 03:22:27 6681
Idyllwild 03:06:32 -18.7 Dark Up 64.9 187.9 Up 02:51:32 - 03:21:32 6680
Reno 03:08:25 -16.4 AT Up 59.3 181.4 Up 02:53:25 - 03:23:25 6655
Lee Vining 03:07:52 -16.9 AT Up 60.9 182.6 Up 02:52:52 - 03:22:52 6648
Carson City 03:08:13 -16.4 AT Up 59.7 181.4 Up 02:53:13 - 03:23:13 6643
Gardnerville 03:08:10 -16.4 AT Up 59.9 181.5 Up 02:53:10 - 03:23:10 6637
Susanville 03:08:32 -15.7 AT Up 58.5 179.9 Up 02:53:32 - 03:23:32 6625
Tulelake 03:08:57 -15.2 AT Up 56.9 178.6 Up 02:53:57 - 03:23:57 6623
Chiloquin 03:09:12 -14.9 AT Up 56.3 178.0 Up 02:54:12 - 03:24:12 6618
Portola 03:08:24 -15.9 AT Up 59.1 180.2 Up 02:53:24 - 03:23:24 6615
Klamath Falls 03:09:04 -14.9 AT Up 56.6 178.1 Up 02:54:04 - 03:24:04 6611
Gimple 03:08:32 -15.6 AT Up 58.7 179.5 Up 02:53:32 - 03:23:32 6597
Fall River/Burney 03:08:46 -15.2 AT Up 57.8 178.6 Up 02:53:46 - 03:23:46 6593
Greenville 03:08:31 -15.5 AT Up 58.7 179.3 Up 02:53:31 - 03:23:31 6591
Quincy 03:08:29 -15.5 AT Up 58.9 179.3 Up 02:53:29 - 03:23:29 6583
Wildwood 03:06:53 -17.2 AT Up 64.7 183.7 Up 02:51:53 - 03:21:53 6536
CPSLO 03:07:24 -15.6 AT Up 63.6 179.2 Up 02:52:24 - 03:22:24 6415

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 03UT292, (2018/02/26 03:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.43  20
Bellatrix      05:25:07.8 +06:20:58  1.6  2.78  27
PPM 149168     05:35:12.8 +09:36:48  6.3  1.52  23
PPM 149064     05:30:47.4 +08:23:57  8.4  0.52  25
PPM 149014     05:28:56.9 +08:48:14  9.4  0.24  25
PPM 149022     05:29:11.4 +08:54:43 10.7  0.17  25
03UT292        05:29:51.7 +08:52:13 15.1        25
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:18:25 UT

Marc W. Buie, Southwest Research Institute

RECON