RECON: TNO occultation with 05VA123

Event between 05VA123 and star GA1140:01555363 with event index number of 294454

Geocentric closest approach at 2020/01/10 08:36:34 UTC

J2000 position of star is 05:50:56.9 +24:35:28
Equinox of date position of star is 05:52:06.2 +24:35:42
Stellar brightness G=16.1, use SENSEUP=128
Star is 16 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 37.2 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 2033 seconds.
The 1-sigma cross-track error in the shadow position is 2232 km.
The sky-plane scale is 26338.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 9.6 sec chord
Diameter=91.8 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05VA123, (2020/01/10 08:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.4 +07:24:33  0.4 17.21  22
Alnath         05:27:33.6 +28:37:21  1.6  6.82  22
132 Tau        05:50:14.7 +24:34:21  4.9  0.44  16
PPM 095035     05:54:47.3 +24:17:23  8.1  0.67  15
PPM 094936     05:50:42.8 +24:50:18 10.0  0.41  16
PPM 094983     05:52:53.1 +24:42:31 10.2  0.20  16
05VA123        05:52:10.7 +24:35:42 16.1        16
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 0.4 sigma about the mid-time.
The median site spacing is 23.3 km RECON observability=1.0 and success probability=19.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:35:02 -61.5 Dark Up 55.1 235.0 Up 08:20:02 - 08:50:02 2211
Summerland 08:35:03 -61.6 Dark Up 55.3 234.5 Up 08:20:03 - 08:50:03 2202
Penticton 08:35:02 -61.9 Dark Up 55.4 235.2 Up 08:20:02 - 08:50:02 2174
Okanagan Falls 08:35:01 -62.1 Dark Up 55.6 235.4 Up 08:20:01 - 08:50:01 2155
Oliver 08:35:01 -62.2 Dark Up 55.6 235.6 Up 08:20:01 - 08:50:01 2139
Anarchist Mountain Observatory 08:35:01 -62.3 Dark Up 55.6 236.0 Up 08:20:01 - 08:50:01 2125
Oroville 08:35:01 -62.4 Dark Up 55.7 236.0 Up 08:20:01 - 08:50:01 2117
Tonasket 08:35:00 -62.6 Dark Up 55.8 236.3 Up 08:20:00 - 08:50:00 2094
Okanogan 08:35:00 -63.0 Dark Up 56.1 236.5 Up 08:20:00 - 08:50:00 2059
Brewster 08:35:00 -63.3 Dark Up 56.4 236.6 Up 08:20:00 - 08:50:00 2030
Manson/Chelan 08:35:01 -63.6 Dark Up 56.7 236.4 Up 08:20:01 - 08:50:01 2004
Entiat 08:35:01 -63.8 Dark Up 56.9 236.6 Up 08:20:01 - 08:50:01 1982
Wenatchee 08:35:00 -64.0 Dark Up 57.0 236.8 Up 08:20:00 - 08:50:00 1955
Ellensburg 08:35:00 -64.5 Dark Up 57.4 237.0 Up 08:20:00 - 08:50:00 1911
Yakima 08:34:59 -64.9 Dark Up 57.6 237.5 Up 08:19:59 - 08:49:59 1870
Pasco 08:34:55 -64.9 Dark Up 57.0 239.8 Up 08:19:55 - 08:49:55 1858
Toppenish/White Swan 08:34:59 -65.1 Dark Up 57.6 238.1 Up 08:19:59 - 08:49:59 1851
PNWRO 08:34:54 -65.1 Dark Up 57.0 240.4 Up 08:19:54 - 08:49:54 1837
George/Umatilla 08:34:55 -65.3 Dark Up 57.3 240.0 Up 08:19:55 - 08:49:55 1821
Goldendale 08:34:59 -65.7 Dark Up 58.2 238.2 Up 08:19:59 - 08:49:59 1790
The Dalles 08:35:00 -66.0 Dark Up 58.5 238.1 Up 08:20:00 - 08:50:00 1762
Maupin 08:34:59 -66.3 Dark Up 58.7 238.8 Up 08:19:59 - 08:49:59 1721
Madras/Culver 08:34:58 -66.9 Dark Up 59.0 239.5 Up 08:19:58 - 08:49:58 1666
Redmond 08:34:58 -67.2 Dark Up 59.2 240.0 Up 08:19:58 - 08:49:58 1629
Sisters 08:34:59 -67.3 Dark Up 59.4 239.4 Up 08:19:59 - 08:49:59 1625
Bend 08:34:58 -67.5 Dark Up 59.4 240.1 Up 08:19:58 - 08:49:58 1605
Oregon Observatory 08:34:58 -67.7 Dark Up 59.6 240.2 Up 08:19:58 - 08:49:58 1585
La Pine/Gilchrist 08:34:58 -67.9 Dark Up 59.7 240.4 Up 08:19:58 - 08:49:58 1564
North Lake 08:34:55 -68.2 Dark Up 59.5 241.8 Up 08:19:55 - 08:49:55 1528
Niwot 08:34:05 -64.3 Dark Up 49.5 261.5 Up 08:19:05 - 08:49:05 1514
Paisley 08:34:54 -68.6 Dark Up 59.6 243.1 Up 08:19:54 - 08:49:54 1477
Chiloquin 08:34:57 -69.0 Dark Up 60.5 241.6 Up 08:19:57 - 08:49:57 1445
Lakeview 08:34:52 -69.1 Dark Up 59.7 244.1 Up 08:19:52 - 08:49:52 1428
Klamath Falls 08:34:57 -69.3 Dark Up 60.6 242.3 Up 08:19:57 - 08:49:57 1411
Tulelake 08:34:55 -69.5 Dark Up 60.5 243.1 Up 08:19:55 - 08:49:55 1387
Cedarville 08:34:50 -69.7 Dark Up 59.8 245.3 Up 08:19:50 - 08:49:50 1363
Fall River/Burney 08:34:54 -70.4 Dark Up 60.9 244.6 Up 08:19:54 - 08:49:54 1294
Susanville 08:34:51 -70.9 Dark Up 60.6 246.5 Up 08:19:51 - 08:49:51 1241
Gimple 08:34:51 -71.2 Dark Up 60.9 246.7 Up 08:19:51 - 08:49:51 1208
Greenville 08:34:51 -71.2 Dark Up 60.9 246.6 Up 08:19:51 - 08:49:51 1207
Quincy 08:34:51 -71.4 Dark Up 61.0 247.0 Up 08:19:51 - 08:49:51 1186
Portola 08:34:49 -71.4 Dark Up 60.7 247.7 Up 08:19:49 - 08:49:49 1181
Reno 08:34:47 -71.5 Dark Up 60.4 248.9 Up 08:19:47 - 08:49:47 1164
Carson City 08:34:46 -71.8 Dark Up 60.5 249.5 Up 08:19:46 - 08:49:46 1127
Yerington 08:34:44 -71.8 Dark Up 60.1 250.5 Up 08:19:44 - 08:49:44 1117
Gardnerville 08:34:46 -72.0 Dark Up 60.5 250.0 Up 08:19:46 - 08:49:46 1102
Hawthorne 08:34:42 -72.0 Dark Up 59.9 251.8 Up 08:19:42 - 08:49:42 1077
Tonopah 08:34:36 -71.9 Dark Up 58.9 254.0 Up 08:19:36 - 08:49:36 1053
Lee Vining 08:34:43 -72.7 Dark Up 60.4 252.3 Up 08:19:43 - 08:49:43 1010
Bishop 08:34:39 -73.0 Dark Up 60.0 254.0 Up 08:19:39 - 08:49:39 960
Beatty 08:34:33 -72.7 Dark Up 58.9 256.3 Up 08:19:33 - 08:49:33 941
Indian Springs 08:34:29 -72.5 Dark Up 58.1 257.7 Up 08:19:29 - 08:49:29 927
Lone Pine 08:34:37 -73.5 Dark Up 60.0 255.6 Up 08:19:37 - 08:49:37 886
Henderson 08:34:26 -72.6 Dark Up 57.7 259.2 Up 08:19:26 - 08:49:26 885
Patrick 08:34:22 -72.5 Dark Up 56.9 261.0 Up 08:19:22 - 08:49:22 842
Searchlight/Boulder City 08:34:25 -73.0 Dark Up 57.8 260.1 Up 08:19:25 - 08:49:25 826
DCO 08:34:19 -72.3 Dark Up 56.4 262.0 Up 08:19:19 - 08:49:19 824
Kingman/Dolan Springs 08:34:22 -72.8 Dark Up 57.1 261.2 Up 08:19:22 - 08:49:22 814
Laughlin/Bullhead City 08:34:24 -73.1 Dark Up 57.5 260.8 Up 08:19:24 - 08:49:24 802
Mohave Valley 08:34:24 -73.3 Dark Up 57.6 261.3 Up 08:19:24 - 08:49:24 773
Lake Havasu City 08:34:22 -73.4 Dark Up 57.4 262.1 Up 08:19:22 - 08:49:22 736
CPSLO 08:34:44 -75.6 Dark Up 62.3 255.4 Up 08:19:44 - 08:49:44 703
Parker 08:34:21 -73.6 Dark Up 57.5 262.6 Up 08:19:21 - 08:49:21 700
Blythe 08:34:22 -74.2 Dark Up 57.8 263.2 Up 08:19:22 - 08:49:22 638
Wildwood 08:34:36 -75.9 Dark Up 61.0 259.4 Up 08:19:36 - 08:49:36 611
Idyllwild 08:34:29 -75.3 Dark Up 59.5 261.5 Up 08:19:29 - 08:49:29 608
Calipatria 08:34:24 -75.1 Dark Up 58.6 263.4 Up 08:19:24 - 08:49:24 567
Yuma 08:34:21 -74.8 Dark Up 57.9 264.7 Up 08:19:21 - 08:49:21 539

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 05VA123, (2020/01/10 08:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.21  22
Alnath         05:26:17.5 +28:36:23  1.6  6.82  22
132 Tau        05:49:00.9 +24:34:02  4.9  0.44  16
PPM 095035     05:53:33.6 +24:17:13  8.1  0.67  15
PPM 094936     05:49:28.9 +24:50:01 10.0  0.41  16
PPM 094983     05:51:39.2 +24:42:18 10.2  0.20  16
05VA123        05:50:56.9 +24:35:28 16.1        16
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:46:52 UT

Marc W. Buie, Southwest Research Institute

RECON