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 07:00:59.3 +18:17:15
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         07:46:28.5 +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 6096
Tonasket 06:01:38 -55.9 Dark Up 45.6 118.7 Up 05:46:38 - 06:16:38 6074
Okanogan 06:01:38 -56.0 Dark Up 45.6 118.3 Up 05:46:38 - 06:16:38 6044
Brewster 06:01:39 -56.1 Dark Up 45.6 117.8 Up 05:46:39 - 06:16:39 6021
Manson/Chelan 06:01:41 -56.0 Dark Up 45.5 117.2 Up 05:46:41 - 06:16:41 6005
Entiat 06:01:41 -56.1 Dark Up 45.6 117.0 Up 05:46:41 - 06:16:41 5985
Wenatchee 06:01:42 -56.2 Dark Up 45.6 116.6 Up 05:46:42 - 06:16:42 5962
Ellensburg 06:01:43 -56.3 Dark Up 45.7 116.0 Up 05:46:43 - 06:16:43 5924
Yakima 06:01:44 -56.5 Dark Up 45.9 115.6 Up 05:46:44 - 06:16:44 5886
Toppenish/White Swan 06:01:44 -56.7 Dark Up 46.1 115.6 Up 05:46:44 - 06:16:44 5863
Pasco 06:01:41 -57.5 Dark Up 46.9 116.8 Up 05:46:41 - 06:16:41 5838
Goldendale 06:01:46 -56.8 Dark Up 46.0 114.7 Up 05:46:46 - 06:16:46 5815
PNWRO 06:01:41 -57.8 Dark Up 47.1 116.8 Up 05:46:41 - 06:16:41 5812
George/Umatilla 06:01:42 -57.6 Dark Up 46.9 116.3 Up 05:46:42 - 06:16:42 5808
The Dalles 06:01:47 -56.7 Dark Up 45.9 114.1 Up 05:46:47 - 06:16:47 5797
Maupin 06:01:48 -57.0 Dark Up 46.1 113.8 Up 05:46:48 - 06:16:48 5755
Madras/Culver 06:01:49 -57.2 Dark Up 46.3 113.2 Up 05:46:49 - 06:16:49 5703
Sisters 06:01:51 -57.1 Dark Up 46.2 112.5 Up 05:46:51 - 06:16:51 5675
Redmond 06:01:50 -57.4 Dark Up 46.4 112.8 Up 05:46:50 - 06:16:50 5668
Bend 06:01:51 -57.4 Dark Up 46.4 112.5 Up 05:46:51 - 06:16:51 5649
Oregon Observatory 06:01:52 -57.4 Dark Up 46.4 112.2 Up 05:46:52 - 06:16:52 5633
La Pine/Gilchrist 06:01:52 -57.5 Dark Up 46.4 111.9 Up 05:46:52 - 06:16:52 5614
North Lake 06:01:51 -58.1 Dark Up 47.0 112.1 Up 05:46:51 - 06:16:51 5564
Chiloquin 06:01:55 -57.8 Dark Up 46.6 110.5 Up 05:46:55 - 06:16:55 5508
Paisley 06:01:51 -58.6 Dark Up 47.5 111.9 Up 05:46:51 - 06:16:51 5505
Klamath Falls 06:01:55 -58.0 Dark Up 46.8 110.3 Up 05:46:55 - 06:16:55 5473
Lakeview 06:01:52 -58.9 Dark Up 47.8 111.6 Up 05:46:52 - 06:16:52 5453
Tulelake 06:01:55 -58.3 Dark Up 47.1 110.3 Up 05:46:55 - 06:16:55 5443
Cedarville 06:01:53 -59.3 Dark Up 48.1 111.1 Up 05:46:53 - 06:16:53 5385
Fall River/Burney 06:01:56 -58.7 Dark Up 47.5 109.4 Up 05:46:56 - 06:16:56 5351
Susanville 06:01:56 -59.5 Dark Up 48.2 109.5 Up 05:46:56 - 06:16:56 5278
Greenville 06:01:56 -59.4 Dark Up 48.1 108.9 Up 05:46:56 - 06:16:56 5254
Gimple 06:01:56 -59.5 Dark Up 48.1 109.0 Up 05:46:56 - 06:16:56 5253
Quincy 06:01:56 -59.5 Dark Up 48.1 108.7 Up 05:46:56 - 06:16:56 5234
Portola 06:01:56 -59.9 Dark Up 48.5 109.0 Up 05:46:56 - 06:16:56 5215
Reno 06:01:54 -60.4 Dark Up 49.1 109.3 Up 05:46:54 - 06:16:54 5180
Carson City 06:01:55 -60.6 Dark Up 49.2 108.9 Up 05:46:55 - 06:16:55 5143
Gardnerville 06:01:55 -60.7 Dark Up 49.3 108.7 Up 05:46:55 - 06:16:55 5118
Yerington 06:01:53 -61.1 Dark Up 49.8 109.3 Up 05:46:53 - 06:16:53 5116
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 5062
Lee Vining 06:01:55 -61.6 Dark Up 50.1 108.2 Up 05:46:55 - 06:16:55 5010
Tonopah 06:01:49 -62.9 Dark Up 51.5 110.1 Up 05:46:49 - 06:16:49 4998
Bishop 06:01:54 -62.3 Dark Up 50.8 108.2 Up 05:46:54 - 06:16:54 4940
Beatty 06:01:49 -63.7 Dark Up 52.2 109.1 Up 05:46:49 - 06:16:49 4873
Lone Pine 06:01:54 -62.9 Dark Up 51.3 107.6 Up 05:46:54 - 06:16:54 4857
Indian Springs 06:01:47 -64.6 Dark Up 53.1 109.7 Up 05:46:47 - 06:16:47 4828
Henderson 06:01:45 -65.3 Dark Up 53.8 109.7 Up 05:46:45 - 06:16:45 4765
CPSLO 06:02:03 -61.3 Dark Up 49.7 103.9 Up 05:47:03 - 06:17:03 4753
Searchlight/Boulder City 06:01:45 -65.6 Dark Up 54.1 109.0 Up 05:46:45 - 06:16:45 4704
Patrick 06:01:42 -66.4 Dark Up 54.9 109.9 Up 05:46:42 - 06:16:42 4688
Laughlin/Bullhead City 06:01:45 -66.0 Dark Up 54.4 108.9 Up 05:46:45 - 06:16:45 4669
Kingman/Dolan Springs 06:01:43 -66.4 Dark Up 54.8 109.5 Up 05:46:43 - 06:16:43 4666
DCO 06:01:41 -67.1 Dark Up 55.5 110.2 Up 05:46:41 - 06:16:41 4649
Mohave Valley 06:01:45 -66.1 Dark Up 54.5 108.6 Up 05:46:45 - 06:16:45 4640
Wildwood 06:01:59 -63.3 Dark Up 51.6 104.1 Up 05:46:59 - 06:16:59 4601
Lake Havasu City 06:01:45 -66.4 Dark Up 54.9 108.3 Up 05:46:45 - 06:16:45 4595
Parker 06:01:45 -66.6 Dark Up 55.0 107.8 Up 05:46:45 - 06:16:45 4558
Idyllwild 06:01:53 -64.9 Dark Up 53.2 105.2 Up 05:46:53 - 06:16:53 4541
Blythe 06:01:47 -66.5 Dark Up 54.9 106.9 Up 05:46:47 - 06:16:47 4505
Calipatria 06:01:50 -66.0 Dark Up 54.3 105.4 Up 05:46:50 - 06:16:50 4463
Yuma 06:01:48 -66.8 Dark Up 55.1 105.6 Up 05:46:48 - 06:16:48 4407

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 2017/12/05 19:08:34 UT

Marc W. Buie, Southwest Research Institute

RECON