RECON: TNO occultation with 471954

Event between (471954) 13RM98 and star GA0920:18176406 with event index number of 309747

Geocentric closest approach at 2019/11/08 03:49:02 UTC

J2000 position of star is 23:51:15.9 +03:43:44
Equinox of date position of star is 23:52:15.5 +03:50:12
Stellar brightness G=14.0, use SENSEUP=64
Star is 10 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 45.2 AU from the Sun and 44.5 AU from the Earth.
The TNO is moving 16.9 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 215 seconds.
The 1-sigma cross-track error in the shadow position is 3798 km.
The sky-plane scale is 32290.8 km/arcsec.

The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 29.7 sec chord
Diameter=204.6 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 471954, (2019/11/08 03:49UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:44.6 -29:31:00  1.2 35.74  27
Algenib        00:14:15.6 +15:17:38  2.8 12.67  22
22 Psc         23:52:58.9 +03:02:27  5.5  0.82   9
PPM 174541     23:55:20.5 +03:47:16  8.2  0.77  10
PPM 174454     23:50:14.0 +03:38:18  9.5  0.55  10
PPM 174489     23:52:17.6 +04:00:34 11.1  0.17  10
471954         23:52:16.9 +03:50:21 14.0        10
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 4.2 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=1.0 and success probability=0.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:48:17 -32.8 Dark Up 42.5 162.2 Up 03:33:17 - 04:03:17 12936
Summerland 03:48:21 -32.7 Dark Up 42.8 161.7 Up 03:33:21 - 04:03:21 12925
Penticton 03:48:22 -32.8 Dark Up 42.8 161.9 Up 03:33:22 - 04:03:22 12918
Okanagan Falls 03:48:19 -32.8 Dark Up 43.0 161.8 Up 03:33:19 - 04:03:19 12906
Oliver 03:48:19 -32.9 Dark Up 43.2 161.7 Up 03:33:19 - 04:03:19 12895
Anarchist Mountain Observatory 03:48:19 -33.0 Dark Up 43.4 161.9 Up 03:33:19 - 04:03:19 12878
Oroville 03:48:22 -33.0 Dark Up 43.4 161.8 Up 03:33:22 - 04:03:22 12875
Tonasket 03:48:20 -33.1 Dark Up 43.7 161.8 Up 03:33:20 - 04:03:20 12860
Okanogan 03:48:23 -33.1 Dark Up 43.9 161.5 Up 03:33:23 - 04:03:23 12842
Brewster 03:48:24 -33.0 Dark Up 44.2 161.1 Up 03:33:24 - 04:03:24 12830
Manson/Chelan 03:48:26 -32.8 Dark Up 44.3 160.6 Up 03:33:26 - 04:03:26 12826
Entiat 03:48:26 -32.8 Dark Up 44.5 160.4 Up 03:33:26 - 04:03:26 12813
Wenatchee 03:48:27 -32.8 Dark Up 44.7 160.2 Up 03:33:27 - 04:03:27 12799
Ellensburg 03:48:30 -32.7 Dark Up 45.0 159.8 Up 03:33:30 - 04:03:30 12778
Yakima 03:48:31 -32.8 Dark Up 45.4 159.6 Up 03:33:31 - 04:03:31 12750
Toppenish/White Swan 03:48:31 -33.0 Dark Up 45.6 159.8 Up 03:33:31 - 04:03:31 12731
Goldendale 03:48:34 -32.8 Dark Up 46.1 159.0 Up 03:33:34 - 04:03:34 12705
The Dalles 03:48:36 -32.6 Dark Up 46.2 158.4 Up 03:33:36 - 04:03:36 12700
Pasco 03:48:25 -33.8 Dark Up 46.0 161.5 Up 03:33:25 - 04:03:25 12685
George/Umatilla 03:48:27 -33.8 Dark Up 46.3 161.0 Up 03:33:27 - 04:03:27 12669
Maupin 03:48:37 -32.7 Dark Up 46.6 158.4 Up 03:33:37 - 04:03:37 12668
PNWRO 03:48:28 -34.0 Dark Up 46.3 161.7 Up 03:33:28 - 04:03:28 12662
Madras/Culver 03:48:38 -32.8 Dark Up 47.1 158.1 Up 03:33:38 - 04:03:38 12631
Sisters 03:48:42 -32.5 Dark Up 47.3 157.4 Up 03:33:42 - 04:03:42 12621
Redmond 03:48:43 -32.8 Dark Up 47.4 157.9 Up 03:33:43 - 04:03:43 12607
Bend 03:48:42 -32.8 Dark Up 47.6 157.6 Up 03:33:42 - 04:03:42 12596
Oregon Observatory 03:48:44 -32.7 Dark Up 47.7 157.4 Up 03:33:44 - 04:03:44 12588
La Pine/Gilchrist 03:48:43 -32.7 Dark Up 47.9 157.2 Up 03:33:43 - 04:03:43 12575
North Lake 03:48:42 -33.2 Dark Up 48.4 157.9 Up 03:33:42 - 04:03:42 12525
Chiloquin 03:48:47 -32.6 Dark Up 48.8 156.2 Up 03:33:47 - 04:03:47 12505
Klamath Falls 03:48:49 -32.7 Dark Up 49.1 156.2 Up 03:33:49 - 04:03:49 12478
Paisley 03:48:42 -33.5 Dark Up 49.1 158.2 Up 03:33:42 - 04:03:42 12474
Tulelake 03:48:48 -33.0 Dark Up 49.5 156.5 Up 03:33:48 - 04:03:48 12449
Lakeview 03:48:43 -33.7 Dark Up 49.6 158.2 Up 03:33:43 - 04:03:43 12431
Fall River/Burney 03:48:53 -33.1 Dark Up 50.3 156.2 Up 03:33:53 - 04:03:53 12379
Cedarville 03:48:45 -34.0 Dark Up 50.2 158.2 Up 03:33:45 - 04:03:45 12376
Susanville 03:48:49 -33.8 Dark Up 51.1 157.0 Up 03:33:49 - 04:03:49 12308
Greenville 03:48:50 -33.6 Dark Up 51.3 156.4 Up 03:33:50 - 04:03:50 12296
Gimple 03:48:53 -33.6 Dark Up 51.3 156.6 Up 03:33:53 - 04:03:53 12293
Quincy 03:48:51 -33.6 Dark Up 51.5 156.3 Up 03:33:51 - 04:03:51 12281
Portola 03:48:50 -34.0 Dark Up 51.8 157.0 Up 03:33:50 - 04:03:50 12256
Reno 03:48:49 -34.5 Dark Up 52.2 157.9 Up 03:33:49 - 04:03:49 12214
Carson City 03:48:48 -34.6 Dark Up 52.5 157.7 Up 03:33:48 - 04:03:48 12185
Gardnerville 03:48:49 -34.6 Dark Up 52.8 157.7 Up 03:33:49 - 04:03:49 12165
Yerington 03:48:47 -35.1 Dark Up 52.9 158.6 Up 03:33:47 - 04:03:47 12150
Hawthorne 03:48:46 -35.5 Dark Up 53.5 159.2 Up 03:33:46 - 04:03:46 12096
Lee Vining 03:48:49 -35.2 Dark Up 53.9 158.2 Up 03:33:49 - 04:03:49 12067
Tonopah 03:48:42 -36.7 Dark Up 54.3 161.3 Up 03:33:42 - 04:03:42 12012
Bishop 03:48:47 -35.9 Dark Up 54.6 159.1 Up 03:33:47 - 04:03:47 11995
Lone Pine 03:48:49 -36.2 Dark Up 55.4 159.3 Up 03:33:49 - 04:03:49 11922
CPSLO 03:49:04 -34.3 Dark Up 55.8 154.3 Up 03:34:04 - 04:04:04 11904
Beatty 03:48:41 -37.2 Dark Up 55.5 161.6 Up 03:33:41 - 04:03:41 11903
Indian Springs 03:48:36 -38.1 Dark Up 56.1 163.2 Up 03:33:36 - 04:03:36 11840
Niwot 03:47:40 -45.1 Dark Up 53.6 181.7 Up 03:32:40 - 04:02:40 11790
SwRI 03:47:42 -45.1 Dark Up 53.7 181.5 Up 03:32:42 - 04:02:42 11784
Henderson 03:48:35 -38.7 Dark Up 56.7 164.2 Up 03:33:35 - 04:03:35 11772
Wildwood 03:49:01 -36.0 Dark Up 57.6 157.0 Up 03:34:01 - 04:04:01 11733
Searchlight/Boulder City 03:48:36 -38.8 Dark Up 57.3 164.1 Up 03:33:36 - 04:03:36 11722
Laughlin/Bullhead City 03:48:38 -39.2 Dark Up 57.7 164.6 Up 03:33:38 - 04:03:38 11685
Patrick 03:48:33 -39.7 Dark Up 57.6 166.0 Up 03:33:33 - 04:03:33 11681
Kingman/Dolan Springs 03:48:35 -39.6 Dark Up 57.7 165.5 Up 03:33:35 - 04:03:35 11669
Mohave Valley 03:48:38 -39.2 Dark Up 57.9 164.5 Up 03:33:38 - 04:03:38 11662
Idyllwild 03:48:50 -37.6 Dark Up 58.5 160.1 Up 03:33:50 - 04:03:50 11637
DCO 03:48:30 -40.3 Dark Up 58.0 167.1 Up 03:33:30 - 04:03:30 11631
Lake Havasu City 03:48:36 -39.4 Dark Up 58.4 164.8 Up 03:33:36 - 04:03:36 11619
Parker 03:48:40 -39.5 Dark Up 58.7 164.7 Up 03:33:40 - 04:03:40 11588
Blythe 03:48:42 -39.3 Dark Up 59.2 163.9 Up 03:33:42 - 04:03:42 11553
Calipatria 03:48:47 -38.6 Dark Up 59.4 162.0 Up 03:33:47 - 04:03:47 11544
Yuma 03:48:42 -39.4 Dark Up 60.0 163.4 Up 03:33:42 - 04:03:42 11475

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 471954, (2019/11/08 03:49UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 35.74  27
Algenib        00:13:14.2 +15:11:01  2.8 12.67  22
22 Psc         23:51:57.9 +02:55:49  5.5  0.82   9
PPM 174541     23:54:19.5 +03:40:38  8.2  0.77  10
PPM 174454     23:49:13.0 +03:31:41  9.5  0.55  10
PPM 174489     23:51:16.6 +03:53:57 11.1  0.17  10
471954         23:51:15.9 +03:43:44 14.0        10
Positions are for J2000

Event circumstances last updated at 2019/05/21 23:24:52 UT

Marc W. Buie, Southwest Research Institute

RECON