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 03:01:13 UTC

J2000 position of star is 05:29:51.7 +08:52:13
Equinox of date position of star is 05:30:48.5 +08:52:58
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 901 seconds.
The 1-sigma cross-track error in the shadow position is 5289 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 6.5 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 03:07:09 -27.2 Dark Up 56.0 207.4 Up 02:52:09 - 03:22:09 7829
DCO 03:06:33 -21.6 Dark Up 63.0 195.3 Up 02:51:33 - 03:21:33 7048
Oroville 03:10:27 -16.4 AT Up 49.9 182.5 Up 02:55:27 - 03:25:27 7037
Tonasket 03:10:24 -16.4 AT Up 50.1 182.5 Up 02:55:24 - 03:25:24 7029
Okanogan 03:10:21 -16.3 AT Up 50.5 182.3 Up 02:55:21 - 03:25:21 7008
Patrick 03:06:39 -21.0 Dark Up 62.8 193.6 Up 02:51:39 - 03:21:39 7000
Brewster 03:10:07 -16.2 AT Up 50.8 181.9 Up 02:55:07 - 03:25:07 6985
PNWRO 03:09:46 -16.9 AT Up 52.8 183.3 Up 02:54:46 - 03:24:46 6977
Kingman/Dolan Springs 03:06:44 -20.9 Dark Up 63.1 193.4 Up 02:51:44 - 03:21:44 6976
Pasco 03:09:46 -16.7 AT Up 52.6 182.9 Up 02:54:46 - 03:24:46 6969
Manson/Chelan 03:10:09 -16.0 AT Up 51.0 181.3 Up 02:55:09 - 03:25:09 6953
George/Umatilla 03:09:39 -16.6 AT Up 52.9 182.5 Up 02:54:39 - 03:24:39 6942
Entiat 03:10:10 -15.9 AT Up 51.2 181.2 Up 02:55:10 - 03:25:10 6941
Laughlin/Bullhead City 03:06:43 -20.4 Dark Up 63.2 192.3 Up 02:51:43 - 03:21:43 6932
Henderson 03:07:01 -20.1 Dark Up 62.4 191.2 Up 02:52:01 - 03:22:01 6930
Lake Havasu City 03:06:33 -20.7 Dark Up 63.8 193.0 Up 02:51:33 - 03:21:33 6929
Wenatchee 03:10:04 -15.9 AT Up 51.5 181.0 Up 02:55:04 - 03:25:04 6925
Mohave Valley 03:06:42 -20.5 Dark Up 63.5 192.4 Up 02:51:42 - 03:21:42 6923
Parker 03:06:24 -20.7 Dark Up 64.2 193.2 Up 02:51:24 - 03:21:24 6919
Searchlight/Boulder City 03:06:50 -20.2 Dark Up 63.0 191.5 Up 02:51:50 - 03:21:50 6914
Ellensburg 03:10:04 -15.8 AT Up 51.9 180.7 Up 02:55:04 - 03:25:04 6895
Indian Springs 03:07:08 -19.5 Dark Up 62.0 189.6 Up 02:52:08 - 03:22:08 6892
Toppenish/White Swan 03:09:54 -15.9 AT Up 52.5 180.9 Up 02:54:54 - 03:24:54 6884
Yakima 03:09:56 -15.8 AT Up 52.3 180.6 Up 02:54:56 - 03:24:56 6880
Blythe 03:06:18 -20.4 Dark Up 64.7 192.7 Up 02:51:18 - 03:21:18 6874
Yuma 03:06:01 -20.4 Dark Up 65.7 192.9 Up 02:51:01 - 03:21:01 6837
Goldendale 03:09:46 -15.6 AT Up 53.0 180.1 Up 02:54:46 - 03:24:46 6834
Tonopah 03:07:46 -18.4 Dark Up 60.7 186.4 Up 02:52:46 - 03:22:46 6823
Beatty 03:07:22 -18.7 Dark Up 61.8 187.4 Up 02:52:22 - 03:22:22 6816
The Dalles 03:09:45 -15.3 AT Up 53.3 179.5 Up 02:54:45 - 03:24:45 6800
Maupin 03:09:46 -15.4 AT Up 53.7 179.7 Up 02:54:46 - 03:24:46 6792
Calipatria 03:06:14 -19.7 Dark Up 65.4 190.7 Up 02:51:14 - 03:21:14 6777
Madras/Culver 03:09:39 -15.4 AT Up 54.2 179.6 Up 02:54:39 - 03:24:39 6768
Redmond 03:09:37 -15.4 AT Up 54.6 179.5 Up 02:54:37 - 03:24:37 6752
Paisley 03:09:05 -15.8 AT Up 56.2 180.3 Up 02:54:05 - 03:24:05 6738
Lakeview 03:08:57 -16.0 AT Up 56.7 180.6 Up 02:53:57 - 03:23:57 6733
Bend 03:09:26 -15.3 AT Up 54.8 179.1 Up 02:54:26 - 03:24:26 6733
North Lake 03:09:14 -15.6 AT Up 55.6 179.8 Up 02:54:14 - 03:24:14 6733
Hawthorne 03:07:54 -17.3 AT Up 60.3 183.6 Up 02:52:54 - 03:22:54 6727
Sisters 03:09:29 -15.1 AT Up 54.6 178.7 Up 02:54:29 - 03:24:29 6723
Cedarville 03:08:49 -16.1 AT Up 57.3 180.9 Up 02:53:49 - 03:23:49 6722
Oregon Observatory 03:09:25 -15.2 AT Up 55.0 178.9 Up 02:54:25 - 03:24:25 6717
La Pine/Gilchrist 03:09:25 -15.2 AT Up 55.2 178.8 Up 02:54:25 - 03:24:25 6705
Yerington 03:08:07 -16.9 AT Up 59.9 182.6 Up 02:53:07 - 03:23:07 6703
Bishop 03:07:33 -17.4 AT Up 61.5 184.0 Up 02:52:33 - 03:22:33 6702
Idyllwild 03:06:36 -18.7 Dark Up 64.9 187.9 Up 02:51:36 - 03:21:36 6700
Lone Pine 03:07:26 -17.7 AT Up 62.2 184.8 Up 02:52:26 - 03:22:26 6699
Reno 03:08:18 -16.4 AT Up 59.3 181.4 Up 02:53:18 - 03:23:18 6673
Lee Vining 03:07:47 -16.9 AT Up 60.9 182.6 Up 02:52:47 - 03:22:47 6666
Carson City 03:08:14 -16.4 AT Up 59.7 181.4 Up 02:53:14 - 03:23:14 6661
Gardnerville 03:08:01 -16.4 AT Up 59.9 181.4 Up 02:53:01 - 03:23:01 6655
Susanville 03:08:32 -15.7 AT Up 58.5 179.9 Up 02:53:32 - 03:23:32 6642
Tulelake 03:09:04 -15.2 AT Up 56.9 178.6 Up 02:54:04 - 03:24:04 6639
Chiloquin 03:09:18 -14.9 AT Up 56.3 178.1 Up 02:54:18 - 03:24:18 6635
Portola 03:08:24 -15.9 AT Up 59.1 180.2 Up 02:53:24 - 03:23:24 6632
Klamath Falls 03:09:05 -14.9 AT Up 56.6 178.1 Up 02:54:05 - 03:24:05 6627
Gimple 03:08:30 -15.6 AT Up 58.7 179.5 Up 02:53:30 - 03:23:30 6615
Fall River/Burney 03:08:46 -15.2 AT Up 57.8 178.6 Up 02:53:46 - 03:23:46 6609
Greenville 03:08:32 -15.5 AT Up 58.7 179.3 Up 02:53:32 - 03:23:32 6608
Quincy 03:08:29 -15.5 AT Up 58.9 179.3 Up 02:53:29 - 03:23:29 6600
Wildwood 03:06:54 -17.2 AT Up 64.7 183.7 Up 02:51:54 - 03:21:54 6555
CPSLO 03:07:25 -15.6 AT Up 63.6 179.2 Up 02:52:25 - 03:22:25 6433

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 2017/04/24 16:19:57 UT

Marc W. Buie, Southwest Research Institute

RECON