RECON: TNO occultation with 00SR331

Event between 00SR331 and star UC4-542-036339 with event index number of 168438

Geocentric closest approach at 2018/12/25 05:59:28 UTC

J2000 position of star is 06:59:56.6 +18:18:49
Equinox of date position of star is 07:00:57.4 +18:17:18
Stellar brightness R=15.8, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 91% illuminated.
TNO apparent brightness V=23.9

[RECON map]
TNO is 32.5 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 889 seconds.
The 1-sigma cross-track error in the shadow position is 1289 km.
The sky-plane scale is 22852.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.2 km assuming a 5% albedo -- 4.5 sec chord
Diameter=43.3 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 00SR331, (2018/12/25 05:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.6 +27:58:44  1.1 14.23  16
Alhena         06:38:48.5 +16:22:53  1.9  5.64  30
PPM 123373     07:01:23.3 +15:30:26  6.4  2.78  25
PPM 123408     07:02:51.9 +17:56:49  7.8  0.55  24
PPM 123380     07:01:41.4 +18:08:04  9.7  0.21  24
00SR331        07:01:03.0 +18:17:09 15.8        24
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 23.4 km RECON observability=1.0 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:01:37 -55.8 Dark Up 45.4 118.9 Up 05:46:37 - 06:16:37 6094
Tonasket 06:01:38 -55.9 Dark Up 45.6 118.7 Up 05:46:38 - 06:16:38 6072
Okanogan 06:01:38 -56.0 Dark Up 45.6 118.3 Up 05:46:38 - 06:16:38 6042
Brewster 06:01:39 -56.1 Dark Up 45.6 117.8 Up 05:46:39 - 06:16:39 6018
Manson/Chelan 06:01:41 -56.0 Dark Up 45.5 117.2 Up 05:46:41 - 06:16:41 6002
Entiat 06:01:41 -56.1 Dark Up 45.6 117.0 Up 05:46:41 - 06:16:41 5982
Wenatchee 06:01:42 -56.2 Dark Up 45.6 116.6 Up 05:46:42 - 06:16:42 5959
Ellensburg 06:01:43 -56.3 Dark Up 45.7 116.0 Up 05:46:43 - 06:16:43 5922
Yakima 06:01:44 -56.5 Dark Up 45.9 115.6 Up 05:46:44 - 06:16:44 5883
Toppenish/White Swan 06:01:44 -56.7 Dark Up 46.1 115.6 Up 05:46:44 - 06:16:44 5861
Pasco 06:01:41 -57.5 Dark Up 46.9 116.8 Up 05:46:41 - 06:16:41 5835
Goldendale 06:01:46 -56.8 Dark Up 46.0 114.7 Up 05:46:46 - 06:16:46 5812
PNWRO 06:01:41 -57.8 Dark Up 47.1 116.8 Up 05:46:41 - 06:16:41 5809
George/Umatilla 06:01:42 -57.6 Dark Up 46.9 116.3 Up 05:46:42 - 06:16:42 5805
The Dalles 06:01:48 -56.7 Dark Up 45.9 114.1 Up 05:46:48 - 06:16:48 5794
Maupin 06:01:48 -57.0 Dark Up 46.1 113.8 Up 05:46:48 - 06:16:48 5753
Madras/Culver 06:01:50 -57.2 Dark Up 46.3 113.2 Up 05:46:50 - 06:16:50 5700
Sisters 06:01:51 -57.1 Dark Up 46.2 112.5 Up 05:46:51 - 06:16:51 5673
Redmond 06:01:50 -57.4 Dark Up 46.4 112.8 Up 05:46:50 - 06:16:50 5666
Bend 06:01:51 -57.4 Dark Up 46.4 112.5 Up 05:46:51 - 06:16:51 5646
Oregon Observatory 06:01:52 -57.4 Dark Up 46.4 112.2 Up 05:46:52 - 06:16:52 5631
La Pine/Gilchrist 06:01:52 -57.5 Dark Up 46.4 111.9 Up 05:46:52 - 06:16:52 5612
North Lake 06:01:52 -58.1 Dark Up 47.0 112.1 Up 05:46:52 - 06:16:52 5562
Chiloquin 06:01:55 -57.8 Dark Up 46.6 110.5 Up 05:46:55 - 06:16:55 5506
Paisley 06:01:51 -58.6 Dark Up 47.5 111.9 Up 05:46:51 - 06:16:51 5503
Klamath Falls 06:01:55 -58.0 Dark Up 46.8 110.3 Up 05:46:55 - 06:16:55 5471
Lakeview 06:01:52 -58.9 Dark Up 47.8 111.6 Up 05:46:52 - 06:16:52 5450
Tulelake 06:01:55 -58.3 Dark Up 47.1 110.3 Up 05:46:55 - 06:16:55 5440
Cedarville 06:01:52 -59.3 Dark Up 48.1 111.1 Up 05:46:52 - 06:16:52 5382
Fall River/Burney 06:01:56 -58.7 Dark Up 47.5 109.4 Up 05:46:56 - 06:16:56 5348
Susanville 06:01:55 -59.5 Dark Up 48.2 109.5 Up 05:46:55 - 06:16:55 5276
Greenville 06:01:56 -59.4 Dark Up 48.1 108.9 Up 05:46:56 - 06:16:56 5252
Gimple 06:01:56 -59.5 Dark Up 48.1 109.0 Up 05:46:56 - 06:16:56 5250
Quincy 06:01:56 -59.5 Dark Up 48.1 108.7 Up 05:46:56 - 06:16:56 5231
Portola 06:01:56 -59.9 Dark Up 48.5 109.0 Up 05:46:56 - 06:16:56 5213
Reno 06:01:54 -60.4 Dark Up 49.1 109.3 Up 05:46:54 - 06:16:54 5178
Carson City 06:01:55 -60.6 Dark Up 49.2 108.9 Up 05:46:55 - 06:16:55 5141
Gardnerville 06:01:55 -60.7 Dark Up 49.3 108.7 Up 05:46:55 - 06:16:55 5115
Yerington 06:01:53 -61.1 Dark Up 49.8 109.3 Up 05:46:53 - 06:16:53 5114
Niwot 06:01:09 -69.1 Dark Up 58.7 126.4 Up 05:46:09 - 06:16:09 5113
Hawthorne 06:01:53 -61.7 Dark Up 50.3 109.3 Up 05:46:53 - 06:16:53 5060
Lee Vining 06:01:55 -61.6 Dark Up 50.1 108.2 Up 05:46:55 - 06:16:55 5008
Tonopah 06:01:49 -62.9 Dark Up 51.5 110.1 Up 05:46:49 - 06:16:49 4996
Bishop 06:01:53 -62.3 Dark Up 50.8 108.2 Up 05:46:53 - 06:16:53 4937
Beatty 06:01:49 -63.7 Dark Up 52.2 109.1 Up 05:46:49 - 06:16:49 4871
Lone Pine 06:01:53 -62.9 Dark Up 51.3 107.6 Up 05:46:53 - 06:16:53 4854
Indian Springs 06:01:46 -64.6 Dark Up 53.1 109.7 Up 05:46:46 - 06:16:46 4826
Henderson 06:01:45 -65.3 Dark Up 53.8 109.7 Up 05:46:45 - 06:16:45 4762
CPSLO 06:02:03 -61.3 Dark Up 49.7 103.9 Up 05:47:03 - 06:17:03 4750
Searchlight/Boulder City 06:01:45 -65.6 Dark Up 54.1 109.0 Up 05:46:45 - 06:16:45 4702
Patrick 06:01:42 -66.4 Dark Up 54.9 109.9 Up 05:46:42 - 06:16:42 4686
Laughlin/Bullhead City 06:01:45 -66.0 Dark Up 54.4 108.9 Up 05:46:45 - 06:16:45 4667
Kingman/Dolan Springs 06:01:43 -66.4 Dark Up 54.8 109.5 Up 05:46:43 - 06:16:43 4664
DCO 06:01:40 -67.1 Dark Up 55.5 110.2 Up 05:46:40 - 06:16:40 4647
Mohave Valley 06:01:45 -66.1 Dark Up 54.5 108.6 Up 05:46:45 - 06:16:45 4638
Wildwood 06:01:57 -63.3 Dark Up 51.6 104.1 Up 05:46:57 - 06:16:57 4598
Lake Havasu City 06:01:45 -66.4 Dark Up 54.8 108.3 Up 05:46:45 - 06:16:45 4593
Parker 06:01:45 -66.6 Dark Up 55.0 107.8 Up 05:46:45 - 06:16:45 4556
Idyllwild 06:01:53 -64.9 Dark Up 53.2 105.2 Up 05:46:53 - 06:16:53 4538
Blythe 06:01:46 -66.5 Dark Up 54.9 106.9 Up 05:46:46 - 06:16:46 4503
Calipatria 06:01:50 -66.0 Dark Up 54.3 105.4 Up 05:46:50 - 06:16:50 4460
Yuma 06:01:48 -66.8 Dark Up 55.1 105.6 Up 05:46:48 - 06:16:48 4405

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 00SR331, (2018/12/25 05:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 14.23  16
Alhena         06:37:42.8 +16:23:57  1.9  5.64  30
PPM 123373     07:00:18.1 +15:32:06  6.4  2.78  25
PPM 123408     07:01:45.6 +17:58:31  7.8  0.55  24
PPM 123380     07:00:35.0 +18:09:44  9.7  0.21  24
00SR331        06:59:56.6 +18:18:49 15.8        24
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:36:55 UT

Marc W. Buie, Southwest Research Institute

RECON