RECON: TNO occultation with 04QQ26

Event between 04QQ26 and star GA0880:07552941 with event index number of 293732

Geocentric closest approach at 2020/05/20 08:04:44 UTC

J2000 position of star is 18:17:14.0 -01:44:57
Equinox of date position of star is 18:18:12.6 -01:44:28
Stellar brightness G=16.5, use SENSEUP=128
Star is 118 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 21.9 AU from the Sun and 21.2 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 540 seconds.
The 1-sigma cross-track error in the shadow position is 3093 km.
The sky-plane scale is 15347.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=74.5 km assuming a 5% albedo -- 4.0 sec chord
Diameter=30.4 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04QQ26, (2020/05/20 08:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.6 -26:28:32  0.9 35.77 142
60Bet Oph      17:44:28.8 +04:33:37  2.8 10.54 125
PPM 201570     18:17:57.2 -03:00:01  5.9  1.26 118
PPM 180286     18:18:46.2 -01:27:20  7.7  0.31 118
PPM 180282     18:18:13.9 -01:48:51  9.2  0.08 118
PPM 180283     18:18:22.3 -01:43:07 10.3  0.03 118
04QQ26         18:18:17.5 -01:44:25 16.5       118
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 1.7 sigma about the mid-time.
The median site spacing is 18.4 km RECON observability=1.0 and success probability=5.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:08:04 -19.9 Dark Down 31.0 140.3 Up 07:53:04 - 08:23:04 6410
Summerland 08:08:06 -20.0 Dark Down 30.9 139.9 Up 07:53:06 - 08:23:06 6399
Penticton 08:08:05 -20.3 Dark Down 31.2 140.0 Up 07:53:05 - 08:23:05 6377
Okanagan Falls 08:08:06 -20.5 Dark Down 31.4 139.9 Up 07:53:06 - 08:23:06 6361
Oliver 08:08:06 -20.7 Dark Down 31.5 139.8 Up 07:53:06 - 08:23:06 6348
Anarchist Mountain Observatory 08:08:05 -20.8 Dark Down 31.7 140.0 Up 07:53:05 - 08:23:05 6338
Oroville 08:08:06 -20.9 Dark Down 31.7 139.8 Up 07:53:06 - 08:23:06 6331
Tonasket 08:08:07 -21.1 Dark Down 31.9 139.8 Up 07:53:07 - 08:23:07 6312
Okanogan 08:08:06 -21.5 Dark Down 32.1 139.5 Up 07:53:06 - 08:23:06 6281
Brewster 08:08:08 -21.7 Dark Down 32.2 139.1 Up 07:53:08 - 08:23:08 6254
Manson/Chelan 08:08:10 -22.0 Dark Down 32.2 138.7 Up 07:53:10 - 08:23:10 6228
Entiat 08:08:10 -22.2 Dark Down 32.4 138.5 Up 07:53:10 - 08:23:10 6208
Wenatchee 08:08:10 -22.5 Dark Down 32.5 138.3 Up 07:53:10 - 08:23:10 6185
Ellensburg 08:08:11 -22.9 Dark Down 32.7 137.9 Up 07:53:11 - 08:23:11 6145
Pasco 08:08:07 -23.6 Dark Down 33.9 139.1 Up 07:53:07 - 08:23:07 6113
Yakima 08:08:11 -23.3 Dark Down 33.0 137.7 Up 07:53:11 - 08:23:11 6110
PNWRO 08:08:06 -23.8 Dark Down 34.2 139.2 Up 07:53:06 - 08:23:06 6097
Toppenish/White Swan 08:08:11 -23.5 Dark Down 33.2 137.8 Up 07:53:11 - 08:23:11 6095
George/Umatilla 08:08:08 -23.9 Dark Down 34.1 138.7 Up 07:53:08 - 08:23:08 6080
Goldendale 08:08:13 -24.1 Dark Down 33.5 137.1 Up 07:53:13 - 08:23:13 6038
The Dalles 08:08:15 -24.3 Dark Down 33.4 136.6 Up 07:53:15 - 08:23:15 6011
Maupin 08:08:15 -24.7 Dark Down 33.8 136.5 Up 07:53:15 - 08:23:15 5977
Niwot 08:07:19 -27.6 Dark Down 44.6 152.5 Up 07:52:19 - 08:22:19 5935
Madras/Culver 08:08:15 -25.2 Dark Down 34.2 136.2 Up 07:53:15 - 08:23:15 5928
Redmond 08:08:16 -25.6 Dark Down 34.4 136.0 Up 07:53:16 - 08:23:16 5896
Sisters 08:08:18 -25.6 Dark Down 34.2 135.6 Up 07:53:18 - 08:23:18 5888
Bend 08:08:17 -25.8 Dark Down 34.5 135.8 Up 07:53:17 - 08:23:17 5873
Oregon Observatory 08:08:17 -26.0 Dark Down 34.6 135.6 Up 07:53:17 - 08:23:17 5855
La Pine/Gilchrist 08:08:17 -26.2 Dark Down 34.7 135.4 Up 07:53:17 - 08:23:17 5836
North Lake 08:08:16 -26.6 Dark Down 35.3 135.8 Up 07:53:16 - 08:23:16 5811
Paisley 08:08:15 -27.2 Dark Down 35.9 135.9 Up 07:53:15 - 08:23:15 5770
Lakeview 08:08:15 -27.7 Dark Down 36.3 135.9 Up 07:53:15 - 08:23:15 5729
Chiloquin 08:08:19 -27.3 Dark Down 35.3 134.5 Up 07:53:19 - 08:23:19 5728
Klamath Falls 08:08:19 -27.7 Dark Down 35.6 134.4 Up 07:53:19 - 08:23:19 5699
Tulelake 08:08:18 -27.9 Dark Down 35.9 134.6 Up 07:53:18 - 08:23:18 5682
Cedarville 08:08:14 -28.3 Dark Down 36.9 135.7 Up 07:53:14 - 08:23:14 5674
Fall River/Burney 08:08:20 -28.8 Dark Down 36.6 134.2 Up 07:53:20 - 08:23:20 5601
Susanville 08:08:17 -29.4 Dark Down 37.4 134.6 Up 07:53:17 - 08:23:17 5561
Gimple 08:08:17 -29.7 Dark Down 37.5 134.2 Up 07:53:17 - 08:23:17 5531
Greenville 08:08:18 -29.7 Dark Down 37.5 134.1 Up 07:53:18 - 08:23:18 5529
Portola 08:08:17 -30.0 Dark Down 38.0 134.5 Up 07:53:17 - 08:23:17 5510
Quincy 08:08:18 -29.9 Dark Down 37.6 134.0 Up 07:53:18 - 08:23:18 5510
Reno 08:08:14 -30.3 Dark Down 38.5 135.0 Up 07:53:14 - 08:23:14 5502
Carson City 08:08:14 -30.6 Dark Down 38.8 134.8 Up 07:53:14 - 08:23:14 5469
Yerington 08:08:12 -30.8 Dark Down 39.2 135.4 Up 07:53:12 - 08:23:12 5467
Gardnerville 08:08:14 -30.9 Dark Down 39.0 134.7 Up 07:53:14 - 08:23:14 5448
Hawthorne 08:08:10 -31.2 Dark Down 39.9 135.7 Up 07:53:10 - 08:23:10 5438
Tonopah 08:08:06 -31.6 Dark Down 41.0 136.9 Up 07:53:06 - 08:23:06 5431
Lee Vining 08:08:13 -31.8 Dark Down 40.0 134.8 Up 07:53:13 - 08:23:13 5373
Bishop 08:08:10 -32.4 Dark Down 40.8 135.2 Up 07:53:10 - 08:23:10 5335
Beatty 08:08:04 -32.7 Dark Down 42.0 136.8 Up 07:53:04 - 08:23:04 5335
Indian Springs 08:08:00 -32.9 Dark Down 42.9 137.8 Up 07:53:00 - 08:23:00 5333
Henderson 08:07:57 -33.4 Dark Down 43.6 138.2 Up 07:52:57 - 08:22:57 5302
Patrick 08:07:52 -33.8 Dark Down 44.7 139.1 Up 07:52:52 - 08:22:52 5274
Lone Pine 08:08:09 -33.1 Dark Down 41.5 135.1 Up 07:53:09 - 08:23:09 5273
DCO 08:07:50 -34.0 Dark Down 45.3 139.7 Up 07:52:50 - 08:22:50 5265
Searchlight/Boulder City 08:07:57 -33.9 Dark Down 44.1 137.9 Up 07:52:57 - 08:22:57 5250
Kingman/Dolan Springs 08:07:54 -34.1 Dark Down 44.8 138.7 Up 07:52:54 - 08:22:54 5248
Laughlin/Bullhead City 08:07:56 -34.2 Dark Down 44.5 138.1 Up 07:52:56 - 08:22:56 5231
Mohave Valley 08:07:56 -34.4 Dark Down 44.7 137.9 Up 07:52:56 - 08:22:56 5206
Lake Havasu City 08:07:55 -34.8 Dark Down 45.1 138.0 Up 07:52:55 - 08:22:55 5175
Parker 08:07:55 -35.1 Dark Down 45.4 137.8 Up 07:52:55 - 08:22:55 5142
Blythe 08:07:56 -35.7 Dark Down 45.6 137.1 Up 07:52:56 - 08:22:56 5084
CPSLO 08:08:19 -34.6 Dark Down 40.9 131.6 Up 07:53:19 - 08:23:19 5082
Idyllwild 08:08:04 -35.8 Dark Down 44.3 134.7 Up 07:53:04 - 08:23:04 5036
Wildwood 08:08:11 -35.7 Dark Down 43.0 132.9 Up 07:53:11 - 08:23:11 5020
Calipatria 08:07:59 -36.3 Dark Down 45.5 135.6 Up 07:52:59 - 08:22:59 5011
Yuma 08:07:56 -36.6 Dark Down 46.3 136.4 Up 07:52:56 - 08:22:56 4994

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 04QQ26, (2020/05/20 08:05UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.77 142
60Bet Oph      17:43:28.3 +04:34:05  2.8 10.54 125
PPM 201570     18:16:53.1 -03:00:32  5.9  1.26 118
PPM 180286     18:17:42.8 -01:27:52  7.7  0.31 118
PPM 180282     18:17:10.3 -01:49:22  9.2  0.08 118
PPM 180283     18:17:18.8 -01:43:39 10.3  0.03 118
04QQ26         18:17:14.0 -01:44:57 16.5       118
Positions are for J2000

Event circumstances last updated at 2018/10/26 21:08:23 UT

Marc W. Buie, Southwest Research Institute

RECON