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 06:18:35 UTC

J2000 position of star is 06:59:56.6 +18:18:49
Equinox of date position of star is 07:01:00.0 +18:17:14
Stellar brightness R=15.8, use SENSEUP=128
Star is 25 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 488 seconds.
The 1-sigma cross-track error in the shadow position is 1359 km.
The sky-plane scale is 22852.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.2 km assuming a 5% albedo -- 4.4 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 06:19UT)
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 1.8 sigma about the mid-time.
The median site spacing is 23.8 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:20:31 -58.1 Dark Up 48.1 124.2 Up 06:05:31 - 06:35:31 9289
Tonasket 06:20:32 -58.3 Dark Up 48.2 124.0 Up 06:05:32 - 06:35:32 9267
Okanogan 06:20:33 -58.4 Dark Up 48.3 123.5 Up 06:05:33 - 06:35:33 9237
Brewster 06:20:34 -58.5 Dark Up 48.4 123.1 Up 06:05:34 - 06:35:34 9212
Manson/Chelan 06:20:35 -58.5 Dark Up 48.3 122.4 Up 06:05:35 - 06:35:35 9196
Entiat 06:20:35 -58.6 Dark Up 48.4 122.2 Up 06:05:35 - 06:35:35 9175
Wenatchee 06:20:37 -58.7 Dark Up 48.4 121.8 Up 06:05:37 - 06:35:37 9152
Ellensburg 06:20:38 -58.9 Dark Up 48.5 121.2 Up 06:05:38 - 06:35:38 9114
Yakima 06:20:38 -59.1 Dark Up 48.7 120.7 Up 06:05:38 - 06:35:38 9075
Toppenish/White Swan 06:20:38 -59.4 Dark Up 48.9 120.7 Up 06:05:38 - 06:35:38 9052
Pasco 06:20:35 -60.1 Dark Up 49.7 122.0 Up 06:05:35 - 06:35:35 9029
PNWRO 06:20:35 -60.4 Dark Up 50.0 122.1 Up 06:05:35 - 06:35:35 9003
Goldendale 06:20:40 -59.5 Dark Up 49.0 119.7 Up 06:05:40 - 06:35:40 9002
George/Umatilla 06:20:37 -60.2 Dark Up 49.8 121.5 Up 06:05:37 - 06:35:37 8999
The Dalles 06:20:41 -59.4 Dark Up 48.9 119.1 Up 06:05:41 - 06:35:41 8984
Maupin 06:20:42 -59.7 Dark Up 49.1 118.8 Up 06:05:42 - 06:35:42 8942
Madras/Culver 06:20:43 -60.0 Dark Up 49.4 118.2 Up 06:05:43 - 06:35:43 8889
Sisters 06:20:45 -60.0 Dark Up 49.2 117.4 Up 06:05:45 - 06:35:45 8860
Redmond 06:20:44 -60.2 Dark Up 49.5 117.8 Up 06:05:44 - 06:35:44 8854
Bend 06:20:45 -60.3 Dark Up 49.5 117.4 Up 06:05:45 - 06:35:45 8834
Oregon Observatory 06:20:45 -60.3 Dark Up 49.5 117.1 Up 06:05:45 - 06:35:45 8818
La Pine/Gilchrist 06:20:46 -60.4 Dark Up 49.6 116.8 Up 06:05:46 - 06:35:46 8799
North Lake 06:20:45 -61.0 Dark Up 50.1 117.0 Up 06:05:45 - 06:35:45 8750
Chiloquin 06:20:48 -60.8 Dark Up 49.8 115.2 Up 06:05:48 - 06:35:48 8692
Paisley 06:20:45 -61.5 Dark Up 50.6 116.8 Up 06:05:45 - 06:35:45 8691
Klamath Falls 06:20:49 -61.0 Dark Up 50.0 115.0 Up 06:05:49 - 06:35:49 8656
Lakeview 06:20:45 -61.9 Dark Up 51.0 116.4 Up 06:05:45 - 06:35:45 8638
Tulelake 06:20:48 -61.4 Dark Up 50.3 115.0 Up 06:05:48 - 06:35:48 8626
Cedarville 06:20:45 -62.4 Dark Up 51.4 115.9 Up 06:05:45 - 06:35:45 8571
Fall River/Burney 06:20:50 -61.9 Dark Up 50.8 114.1 Up 06:05:50 - 06:35:50 8534
Susanville 06:20:48 -62.7 Dark Up 51.5 114.1 Up 06:05:48 - 06:35:48 8462
Greenville 06:20:50 -62.6 Dark Up 51.5 113.5 Up 06:05:50 - 06:35:50 8437
Gimple 06:20:49 -62.7 Dark Up 51.5 113.6 Up 06:05:49 - 06:35:49 8436
Quincy 06:20:50 -62.7 Dark Up 51.5 113.3 Up 06:05:50 - 06:35:50 8417
Portola 06:20:48 -63.1 Dark Up 51.9 113.6 Up 06:05:48 - 06:35:48 8399
Reno 06:20:47 -63.7 Dark Up 52.5 114.0 Up 06:05:47 - 06:35:47 8365
Niwot 06:20:00 -71.2 Dark Up 61.4 133.5 Up 06:05:00 - 06:35:00 8330
Carson City 06:20:48 -63.9 Dark Up 52.6 113.6 Up 06:05:48 - 06:35:48 8328
Gardnerville 06:20:48 -64.0 Dark Up 52.8 113.3 Up 06:05:48 - 06:35:48 8303
Yerington 06:20:46 -64.4 Dark Up 53.2 114.0 Up 06:05:46 - 06:35:46 8302
Hawthorne 06:20:45 -65.0 Dark Up 53.7 114.0 Up 06:05:45 - 06:35:45 8249
Lee Vining 06:20:47 -64.9 Dark Up 53.6 112.8 Up 06:05:47 - 06:35:47 8195
Tonopah 06:20:41 -66.2 Dark Up 54.9 114.9 Up 06:05:41 - 06:35:41 8188
Bishop 06:20:45 -65.7 Dark Up 54.4 112.7 Up 06:05:45 - 06:35:45 8126
Beatty 06:20:41 -67.1 Dark Up 55.7 113.8 Up 06:05:41 - 06:35:41 8063
Lone Pine 06:20:45 -66.3 Dark Up 54.9 112.1 Up 06:05:45 - 06:35:45 8044
Indian Springs 06:20:38 -68.0 Dark Up 56.6 114.6 Up 06:05:38 - 06:35:38 8020
Henderson 06:20:36 -68.7 Dark Up 57.4 114.6 Up 06:05:36 - 06:35:36 7958
CPSLO 06:20:56 -65.0 Dark Up 53.4 107.9 Up 06:05:56 - 06:35:56 7934
Searchlight/Boulder City 06:20:36 -69.1 Dark Up 57.7 113.8 Up 06:05:36 - 06:35:36 7897
Patrick 06:20:33 -69.8 Dark Up 58.5 114.9 Up 06:05:33 - 06:35:33 7883
Laughlin/Bullhead City 06:20:35 -69.4 Dark Up 58.0 113.8 Up 06:05:35 - 06:35:35 7863
Kingman/Dolan Springs 06:20:34 -69.8 Dark Up 58.4 114.4 Up 06:05:34 - 06:35:34 7861
DCO 06:20:31 -70.5 Dark Up 59.1 115.3 Up 06:05:31 - 06:35:31 7846
Mohave Valley 06:20:36 -69.6 Dark Up 58.1 113.4 Up 06:05:36 - 06:35:36 7834
Lake Havasu City 06:20:35 -70.0 Dark Up 58.5 113.0 Up 06:05:35 - 06:35:35 7790
Wildwood 06:20:50 -67.0 Dark Up 55.4 108.2 Up 06:05:50 - 06:35:50 7785
Parker 06:20:36 -70.1 Dark Up 58.7 112.6 Up 06:05:36 - 06:35:36 7752
Idyllwild 06:20:44 -68.5 Dark Up 56.9 109.5 Up 06:05:44 - 06:35:44 7729
Blythe 06:20:37 -70.2 Dark Up 58.6 111.4 Up 06:05:37 - 06:35:37 7698
Calipatria 06:20:41 -69.7 Dark Up 58.1 109.7 Up 06:05:41 - 06:35:41 7654
Yuma 06:20:38 -70.5 Dark Up 58.9 110.0 Up 06:05:38 - 06:35:38 7600

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 06:19UT)
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        25
Positions are for J2000

Event circumstances last updated at 2018/02/14 17:17:32 UT

Marc W. Buie, Southwest Research Institute

RECON