RECON: TNO occultation with 00SR331

Event between 00SR331 and star UC4-543-035960 with event index number of 88493

Geocentric closest approach at 2017/11/20 10:33:44 UTC

J2000 position of star is 06:53:10.4 +18:30:44
Equinox of date position of star is 06:54:11.3 +18:29:23
Stellar brightness R=15.1, use SENSEUP=128
Star is 157 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=24.0

[RECON map]
TNO is 32.3 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 15.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 1049 seconds.
The 1-sigma cross-track error in the shadow position is 3412 km.
The sky-plane scale is 22880.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.2 km assuming a 5% albedo -- 6.8 sec chord
Diameter=43.3 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 00SR331, (2017/11/20 10:34UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:24.5 +27:58:54  1.1 15.27 145
Alhena         06:38:44.7 +16:22:57  1.9  4.25 161
PPM 123009     06:47:24.1 +18:49:03  6.5  1.65 159
PPM 123267     06:56:56.1 +18:28:01  7.9  0.64 157
PPM 123191     06:53:54.3 +18:16:27  9.5  0.23 157
00SR331        06:54:13.2 +18:29:20 15.1       157
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 0.9 sigma about the mid-time.
The median site spacing is 23.6 km RECON observability=1.0 and success probability=10.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:34:04 -45.2 Dark Down 59.4 171.5 Up 10:19:04 - 10:49:04 -2623
Tonasket 10:34:04 -45.3 Dark Down 59.6 171.4 Up 10:19:04 - 10:49:04 -2645
Okanogan 10:34:05 -45.5 Dark Down 59.9 171.0 Up 10:19:05 - 10:49:05 -2677
Brewster 10:34:06 -45.8 Dark Down 60.1 170.6 Up 10:19:06 - 10:49:06 -2702
Manson/Chelan 10:34:08 -46.1 Dark Down 60.3 169.8 Up 10:19:08 - 10:49:08 -2722
Entiat 10:34:08 -46.2 Dark Down 60.5 169.6 Up 10:19:08 - 10:49:08 -2743
Wenatchee 10:34:09 -46.4 Dark Down 60.8 169.4 Up 10:19:09 - 10:49:09 -2767
Ellensburg 10:34:10 -46.7 Dark Down 61.1 168.8 Up 10:19:10 - 10:49:10 -2807
Yakima 10:34:10 -46.9 Dark Down 61.5 168.6 Up 10:19:10 - 10:49:10 -2846
Toppenish/White Swan 10:34:09 -46.8 Dark Down 61.8 168.9 Up 10:19:09 - 10:49:09 -2868
Pasco 10:34:04 -46.1 Dark Down 62.0 171.4 Up 10:19:04 - 10:49:04 -2884
PNWRO 10:34:03 -46.0 Dark Down 62.3 171.7 Up 10:19:03 - 10:49:03 -2908
George/Umatilla 10:34:05 -46.4 Dark Down 62.3 170.8 Up 10:19:05 - 10:49:05 -2916
Goldendale 10:34:12 -47.3 Dark Down 62.3 167.9 Up 10:19:12 - 10:49:12 -2921
The Dalles 10:34:14 -47.6 Dark Down 62.4 167.0 Up 10:19:14 - 10:49:14 -2942
Maupin 10:34:14 -47.7 Dark Down 62.8 167.1 Up 10:19:14 - 10:49:14 -2984
Madras/Culver 10:34:14 -48.0 Dark Down 63.4 166.7 Up 10:19:14 - 10:49:14 -3038
Sisters 10:34:17 -48.4 Dark Down 63.6 165.7 Up 10:19:17 - 10:49:17 -3070
Redmond 10:34:15 -48.2 Dark Down 63.7 166.5 Up 10:19:15 - 10:49:15 -3073
Bend 10:34:16 -48.3 Dark Down 63.9 166.1 Up 10:19:16 - 10:49:16 -3094
Oregon Observatory 10:34:17 -48.5 Dark Down 64.0 165.7 Up 10:19:17 - 10:49:17 -3111
La Pine/Gilchrist 10:34:17 -48.6 Dark Down 64.2 165.5 Up 10:19:17 - 10:49:17 -3131
North Lake 10:34:14 -48.4 Dark Down 64.8 166.6 Up 10:19:14 - 10:49:14 -3177
Paisley 10:34:13 -48.3 Dark Down 65.3 167.1 Up 10:19:13 - 10:49:13 -3234
Chiloquin 10:34:19 -49.2 Dark Down 65.2 164.1 Up 10:19:19 - 10:49:19 -3242
Klamath Falls 10:34:19 -49.3 Dark Down 65.6 164.1 Up 10:19:19 - 10:49:19 -3277
Lakeview 10:34:12 -48.3 Dark Down 65.9 167.3 Up 10:19:12 - 10:49:12 -3286
Tulelake 10:34:18 -49.2 Dark Down 65.9 164.6 Up 10:19:18 - 10:49:18 -3306
Cedarville 10:34:11 -48.4 Dark Down 66.5 167.3 Up 10:19:11 - 10:49:11 -3353
Fall River/Burney 10:34:18 -49.4 Dark Down 66.8 164.2 Up 10:19:18 - 10:49:18 -3399
Susanville 10:34:14 -49.1 Dark Down 67.5 165.6 Up 10:19:14 - 10:49:14 -3466
Greenville 10:34:16 -49.4 Dark Down 67.8 164.7 Up 10:19:16 - 10:49:16 -3493
Gimple 10:34:16 -49.3 Dark Down 67.8 164.9 Up 10:19:16 - 10:49:16 -3494
Niwot 10:32:52 -37.9 Dark Down 66.9 203.3 Up 10:17:52 - 10:47:52 -3495
Quincy 10:34:16 -49.5 Dark Down 68.0 164.6 Up 10:19:16 - 10:49:16 -3514
Portola 10:34:14 -49.2 Dark Down 68.2 165.7 Up 10:19:14 - 10:49:14 -3529
Reno 10:34:10 -48.8 Dark Down 68.5 167.1 Up 10:19:10 - 10:49:10 -3558
Carson City 10:34:10 -48.8 Dark Down 68.9 167.0 Up 10:19:10 - 10:49:10 -3596
Yerington 10:34:07 -48.4 Dark Down 69.2 168.5 Up 10:19:07 - 10:49:07 -3618
Gardnerville 10:34:10 -48.9 Dark Down 69.1 167.0 Up 10:19:10 - 10:49:10 -3621
Hawthorne 10:34:04 -48.2 Dark Down 69.7 169.6 Up 10:19:04 - 10:49:04 -3668
Tonopah 10:33:56 -47.2 Dark Down 70.3 173.3 Up 10:18:56 - 10:48:56 -3719
Lee Vining 10:34:07 -48.7 Dark Down 70.2 168.0 Up 10:19:07 - 10:49:07 -3725
Bishop 10:34:03 -48.2 Dark Down 70.9 169.7 Up 10:19:03 - 10:49:03 -3790
Beatty 10:33:54 -47.1 Dark Down 71.5 174.2 Up 10:18:54 - 10:48:54 -3842
Lone Pine 10:34:02 -48.1 Dark Down 71.7 170.3 Up 10:19:02 - 10:49:02 -3871
Indian Springs 10:33:48 -46.3 Dark Down 71.9 177.3 Up 10:18:48 - 10:48:48 -3878
Henderson 10:33:44 -45.9 Dark Down 72.5 179.4 Up 10:18:44 - 10:48:44 -3935
Searchlight/Boulder City 10:33:44 -45.9 Dark Down 73.0 179.5 Up 10:18:44 - 10:48:44 -3996
CPSLO 10:34:17 -50.4 Dark Down 72.5 161.6 Up 10:19:17 - 10:49:17 -4001
Patrick 10:33:38 -45.1 Dark Down 73.1 182.9 Up 10:18:38 - 10:48:38 -4002
Kingman/Dolan Springs 10:33:39 -45.2 Dark Down 73.3 182.3 Up 10:18:39 - 10:48:39 -4026
Laughlin/Bullhead City 10:33:42 -45.7 Dark Down 73.3 180.6 Up 10:18:42 - 10:48:42 -4028
DCO 10:33:34 -44.5 Dark Down 73.3 185.2 Up 10:18:34 - 10:48:34 -4035
Mohave Valley 10:33:42 -45.7 Dark Down 73.6 180.7 Up 10:18:42 - 10:48:42 -4057
Lake Havasu City 10:33:41 -45.5 Dark Down 74.0 181.5 Up 10:18:41 - 10:48:41 -4100
Wildwood 10:34:06 -49.0 Dark Down 74.1 167.0 Up 10:19:06 - 10:49:06 -4136
Parker 10:33:40 -45.6 Dark Down 74.4 181.7 Up 10:18:40 - 10:48:40 -4137
Idyllwild 10:33:55 -47.5 Dark Down 74.7 173.2 Up 10:18:55 - 10:48:55 -4178
Blythe 10:33:42 -45.8 Dark Down 74.9 180.7 Up 10:18:42 - 10:48:42 -4193
Calipatria 10:33:48 -46.7 Dark Down 75.4 177.2 Up 10:18:48 - 10:48:48 -4245
Yuma 10:33:42 -46.0 Dark Down 75.8 180.5 Up 10:18:42 - 10:48:42 -4293

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, (2017/11/20 10:34UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.27 145
Alhena         06:37:42.8 +16:23:57  1.9  4.25 161
PPM 123009     06:46:21.1 +18:50:16  6.5  1.65 159
PPM 123267     06:55:53.4 +18:29:29  7.9  0.64 157
PPM 123191     06:52:51.6 +18:17:49  9.5  0.23 157
00SR331        06:53:10.4 +18:30:44 15.1       157
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:33:01 UT

Marc W. Buie, Southwest Research Institute

RECON