RECON: TNO occultation with 511130

Event between (511130) 13WV107 and star GA0940:03238094 with event index number of 246947

Geocentric closest approach at 2019/12/20 10:11:22 UTC

J2000 position of star is 08:31:40.3 +04:37:16
Equinox of date position of star is 08:32:41.7 +04:33:16
Stellar brightness G=15.7, use SENSEUP=128
Star is 67 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=20.4

[RECON map]
TNO is 10.8 AU from the Sun and 10.0 AU from the Earth.
The TNO is moving 15.6 km/sec on the sky relative to the star, or, 7.7 arcsec/hr.
The 1-sigma error in the time of the event is 139 seconds.
The 1-sigma cross-track error in the shadow position is 1634 km.
The sky-plane scale is 7262.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 4.1 sec chord
Diameter=25.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 511130, (2019/12/20 10:11UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:26.0 +11:52:08  1.3 25.00  45
Alphard        09:28:34.1 -08:44:46  2.0 19.25  54
4Del Hya       08:38:42.7 +05:37:59  4.2  1.84  66
PPM 154652     08:34:46.6 +04:41:15  7.9  0.53  67
PPM 154635     08:33:59.9 +04:34:43 10.0  0.32  67
PPM 154614     08:33:11.5 +04:33:18 10.8  0.12  67
511130         08:32:43.4 +04:33:09 15.7        67
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 5.0 sigma about the mid-time.
The median site spacing is 17.3 km RECON observability=1.0 and success probability=2.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:10:27 -52.6 Dark Up 44.4 171.6 Up 09:58:22 - 10:22:33 5943
Summerland 10:10:28 -52.9 Dark Up 44.7 171.2 Up 09:58:23 - 10:22:34 5928
Penticton 10:10:28 -52.9 Dark Up 44.8 171.4 Up 09:58:23 - 10:22:34 5921
Okanagan Falls 10:10:29 -53.0 Dark Up 45.0 171.3 Up 09:58:23 - 10:22:34 5907
Oliver 10:10:29 -53.1 Dark Up 45.1 171.3 Up 09:58:23 - 10:22:34 5895
Anarchist Mountain Observatory 10:10:28 -53.1 Dark Up 45.3 171.5 Up 09:58:23 - 10:22:34 5878
Oroville 10:10:29 -53.2 Dark Up 45.4 171.4 Up 09:58:24 - 10:22:35 5874
Tonasket 10:10:29 -53.3 Dark Up 45.6 171.4 Up 09:58:24 - 10:22:35 5857
Okanogan 10:10:31 -53.5 Dark Up 45.9 171.1 Up 09:58:25 - 10:22:36 5836
Brewster 10:10:33 -53.8 Dark Up 46.2 170.8 Up 09:58:27 - 10:22:38 5820
Manson/Chelan 10:10:34 -54.1 Dark Up 46.4 170.3 Up 09:58:29 - 10:22:40 5812
Entiat 10:10:35 -54.3 Dark Up 46.6 170.1 Up 09:58:29 - 10:22:40 5797
Wenatchee 10:10:36 -54.4 Dark Up 46.8 170.0 Up 09:58:31 - 10:22:42 5781
Ellensburg 10:10:38 -54.8 Dark Up 47.2 169.6 Up 09:58:33 - 10:22:44 5754
Yakima 10:10:40 -55.0 Dark Up 47.6 169.5 Up 09:58:34 - 10:22:45 5724
Toppenish/White Swan 10:10:38 -55.0 Dark Up 47.8 169.7 Up 09:58:32 - 10:22:43 5704
Goldendale 10:10:42 -55.5 Dark Up 48.3 168.9 Up 09:58:37 - 10:22:48 5671
Pasco 10:10:33 -54.3 Dark Up 48.1 171.5 Up 09:58:28 - 10:22:39 5665
The Dalles 10:10:43 -55.9 Dark Up 48.5 168.4 Up 09:58:38 - 10:22:49 5662
George/Umatilla 10:10:34 -54.6 Dark Up 48.4 171.1 Up 09:58:29 - 10:22:40 5645
PNWRO 10:10:33 -54.3 Dark Up 48.3 171.8 Up 09:58:27 - 10:22:38 5641
Maupin 10:10:45 -56.0 Dark Up 48.9 168.4 Up 09:58:39 - 10:22:50 5627
Madras/Culver 10:10:46 -56.3 Dark Up 49.4 168.2 Up 09:58:41 - 10:22:52 5585
Sisters 10:10:49 -56.7 Dark Up 49.7 167.5 Up 09:58:43 - 10:22:54 5570
Redmond 10:10:47 -56.5 Dark Up 49.8 168.1 Up 09:58:42 - 10:22:53 5558
Bend 10:10:48 -56.7 Dark Up 50.0 167.8 Up 09:58:43 - 10:22:54 5545
Oregon Observatory 10:10:49 -56.8 Dark Up 50.1 167.6 Up 09:58:44 - 10:22:55 5534
La Pine/Gilchrist 10:10:49 -56.9 Dark Up 50.3 167.4 Up 09:58:44 - 10:22:55 5519
North Lake 10:10:48 -56.8 Dark Up 50.8 168.3 Up 09:58:43 - 10:22:54 5470
Chiloquin 10:10:55 -57.7 Dark Up 51.3 166.6 Up 09:58:49 - 10:23:00 5439
Paisley 10:10:47 -56.8 Dark Up 51.4 168.7 Up 09:58:42 - 10:22:53 5417
Klamath Falls 10:10:55 -57.8 Dark Up 51.7 166.6 Up 09:58:49 - 10:23:00 5409
Tulelake 10:10:54 -57.7 Dark Up 52.0 167.0 Up 09:58:48 - 10:22:59 5380
Lakeview 10:10:47 -56.8 Dark Up 51.9 168.9 Up 09:58:41 - 10:22:52 5371
Cedarville 10:10:48 -57.0 Dark Up 52.6 169.0 Up 09:58:43 - 10:22:54 5313
Fall River/Burney 10:10:55 -58.0 Dark Up 52.9 166.9 Up 09:58:50 - 10:23:01 5303
Susanville 10:10:53 -57.7 Dark Up 53.6 167.9 Up 09:58:47 - 10:22:58 5233
Greenville 10:10:55 -58.0 Dark Up 53.9 167.4 Up 09:58:50 - 10:23:01 5217
Gimple 10:10:54 -58.0 Dark Up 53.9 167.5 Up 09:58:49 - 10:23:00 5215
Quincy 10:10:55 -58.1 Dark Up 54.1 167.3 Up 09:58:50 - 10:23:01 5200
Portola 10:10:53 -57.8 Dark Up 54.3 168.1 Up 09:58:48 - 10:22:59 5177
Reno 10:10:51 -57.4 Dark Up 54.6 169.1 Up 09:58:45 - 10:22:56 5138
Carson City 10:10:51 -57.5 Dark Up 55.0 169.0 Up 09:58:45 - 10:22:56 5107
Gardnerville 10:10:51 -57.6 Dark Up 55.2 169.0 Up 09:58:46 - 10:22:57 5085
Yerington 10:10:48 -57.1 Dark Up 55.2 170.1 Up 09:58:43 - 10:22:54 5075
Hawthorne 10:10:47 -56.9 Dark Up 55.8 170.9 Up 09:58:41 - 10:22:52 5021
Lee Vining 10:10:50 -57.4 Dark Up 56.3 169.9 Up 09:58:44 - 10:22:55 4985
Tonopah 10:10:40 -56.0 Dark Up 56.4 173.2 Up 09:58:35 - 10:22:46 4945
Bishop 10:10:48 -57.0 Dark Up 57.0 171.0 Up 09:58:42 - 10:22:53 4914
Lone Pine 10:10:48 -57.0 Dark Up 57.7 171.4 Up 09:58:42 - 10:22:53 4838
Beatty 10:10:40 -55.9 Dark Up 57.6 173.9 Up 09:58:34 - 10:22:45 4831
Niwot 10:09:34 -46.6 Dark Up 53.8 193.6 Up 09:57:29 - 10:21:40 4831
SwRI 10:09:34 -46.7 Dark Up 53.9 193.5 Up 09:57:29 - 10:21:40 4824
CPSLO 10:11:04 -59.3 Dark Up 58.6 166.3 Up 09:58:59 - 10:23:10 4792
Indian Springs 10:10:35 -55.1 Dark Up 58.0 175.8 Up 09:58:29 - 10:22:40 4774
Henderson 10:10:32 -54.7 Dark Up 58.5 177.0 Up 09:58:27 - 10:22:38 4708
Searchlight/Boulder City 10:10:32 -54.7 Dark Up 59.1 177.1 Up 09:58:27 - 10:22:38 4655
Wildwood 10:10:56 -57.9 Dark Up 60.2 169.8 Up 09:58:50 - 10:23:01 4628
Patrick 10:10:27 -53.9 Dark Up 59.2 179.1 Up 09:58:21 - 10:22:32 4622
Laughlin/Bullhead City 10:10:31 -54.5 Dark Up 59.4 177.7 Up 09:58:26 - 10:22:37 4619
Kingman/Dolan Springs 10:10:27 -54.1 Dark Up 59.4 178.7 Up 09:58:22 - 10:22:33 4607
Mohave Valley 10:10:31 -54.5 Dark Up 59.7 177.7 Up 09:58:25 - 10:22:36 4593
DCO 10:10:24 -53.4 Dark Up 59.5 180.5 Up 09:58:18 - 10:22:29 4576
Lake Havasu City 10:10:31 -54.4 Dark Up 60.1 178.2 Up 09:58:26 - 10:22:37 4550
Idyllwild 10:10:46 -56.4 Dark Up 60.7 173.4 Up 09:58:40 - 10:22:51 4544
Parker 10:10:32 -54.4 Dark Up 60.5 178.3 Up 09:58:26 - 10:22:37 4517
Blythe 10:10:34 -54.7 Dark Up 61.0 177.6 Up 09:58:29 - 10:22:40 4477
Calipatria 10:10:40 -55.5 Dark Up 61.4 175.7 Up 09:58:35 - 10:22:46 4456
Yuma 10:10:36 -54.8 Dark Up 61.9 177.5 Up 09:58:30 - 10:22:41 4392

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 511130, (2019/12/20 10:11UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 25.00  45
Alphard        09:27:35.2 -08:39:31  2.0 19.25  54
4Del Hya       08:37:39.3 +05:42:13  4.2  1.84  66
PPM 154652     08:33:43.5 +04:45:24  7.9  0.53  67
PPM 154635     08:32:56.8 +04:38:51 10.0  0.32  67
PPM 154614     08:32:08.4 +04:37:25 10.8  0.12  67
511130         08:31:40.3 +04:37:16 15.7        67
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:02:51 UT

Marc W. Buie, Southwest Research Institute

RECON