RECON: TNO occultation with 01KD77

Event between 01KD77 and star GA0680:32311786 with event index number of 194650

Geocentric closest approach at 2019/06/08 10:35:36 UTC

J2000 position of star is 18:49:32.3 -21:30:49
Equinox of date position of star is 18:50:42.1 -21:29:25
Stellar brightness G=16.5, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 30% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 36.5 AU from the Sun and 35.6 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 519 seconds.
The 1-sigma cross-track error in the shadow position is 1716 km.
The sky-plane scale is 25794.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=446.7 km assuming a 5% albedo -- 20.7 sec chord
Diameter=182.4 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2019/06/08 10:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:25  0.9 32.29 107
Nunki          18:56:28.1 -26:16:15  2.0  4.96 139
30 Sgr         18:52:00.5 -22:08:18  6.3  0.72 138
PPM 268985     18:52:28.8 -21:59:39  8.5  0.65 138
PPM 268952     18:51:16.4 -21:49:37  9.1  0.36 138
01KD77         18:50:42.1 -21:29:25 16.5       138
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 16.7 km RECON observability=0.6 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 10:34:31 -9.3 NT Down 17.6 193.1 Really Low 10:19:31 - 10:49:31 6289
Summerland 10:34:32 -9.6 NT Down 17.9 192.8 Really Low 10:19:32 - 10:49:32 6280
Penticton 10:34:31 -9.6 NT Down 18.0 192.9 Really Low 10:19:31 - 10:49:31 6277
Okanagan Falls 10:34:31 -9.8 NT Down 18.2 192.9 Really Low 10:19:31 - 10:49:31 6270
Oliver 10:34:31 -9.9 NT Down 18.3 192.9 Really Low 10:19:31 - 10:49:31 6263
Anarchist Mountain Observatory 10:34:31 -10.0 NT Down 18.5 193.1 Really Low 10:19:31 - 10:49:31 6254
Oroville 10:34:30 -10.1 NT Down 18.6 193.1 Really Low 10:19:30 - 10:49:30 6252
Tonasket 10:34:31 -10.3 NT Down 18.8 193.1 Really Low 10:19:31 - 10:49:31 6243
Okanogan 10:34:30 -10.6 NT Down 19.1 193.0 Really Low 10:19:30 - 10:49:30 6231
Brewster 10:34:32 -10.9 NT Down 19.4 192.8 Really Low 10:19:32 - 10:49:32 6222
Manson/Chelan 10:34:32 -11.2 NT Down 19.7 192.5 Really Low 10:19:32 - 10:49:32 6218
Entiat 10:34:32 -11.4 NT Down 19.9 192.4 Really Low 10:19:32 - 10:49:32 6210
Wenatchee 10:34:32 -11.7 NT Down 20.2 192.3 Low 10:19:32 - 10:49:32 6200
Ellensburg 10:34:33 -12.1 AT Down 20.6 192.2 Low 10:19:33 - 10:49:33 6185
Yakima 10:34:32 -12.4 AT Down 21.0 192.2 Low 10:19:32 - 10:49:32 6168
Toppenish/White Swan 10:34:32 -12.5 AT Down 21.2 192.4 Low 10:19:32 - 10:49:32 6157
Goldendale 10:34:34 -13.1 AT Down 21.8 192.0 Low 10:19:34 - 10:49:34 6137
Pasco 10:34:28 -12.1 AT Down 21.1 193.6 Low 10:19:28 - 10:49:28 6136
The Dalles 10:34:34 -13.5 AT Down 22.1 191.6 Low 10:19:34 - 10:49:34 6132
George/Umatilla 10:34:28 -12.5 AT Down 21.5 193.4 Low 10:19:28 - 10:49:28 6124
PNWRO 10:34:27 -12.2 AT Down 21.3 193.8 Low 10:19:27 - 10:49:27 6122
Maupin 10:34:34 -13.8 AT Down 22.5 191.8 Low 10:19:34 - 10:49:34 6111
Madras/Culver 10:34:33 -14.2 AT Down 23.0 191.8 Low 10:19:33 - 10:49:33 6087
Sisters 10:34:35 -14.7 AT Down 23.4 191.4 Low 10:19:35 - 10:49:35 6076
Redmond 10:34:34 -14.5 AT Down 23.4 191.8 Low 10:19:34 - 10:49:34 6070
Bend 10:34:34 -14.8 AT Down 23.6 191.6 Low 10:19:34 - 10:49:34 6062
Oregon Observatory 10:34:35 -15.0 AT Down 23.8 191.5 Low 10:19:35 - 10:49:35 6055
La Pine/Gilchrist 10:34:34 -15.2 AT Down 24.0 191.5 Low 10:19:34 - 10:49:34 6046
North Lake 10:34:33 -15.3 AT Down 24.3 192.1 Low 10:19:33 - 10:49:33 6018
Chiloquin 10:34:35 -16.2 AT Down 25.1 191.2 Low 10:19:35 - 10:49:35 5996
Paisley 10:34:31 -15.6 AT Down 24.8 192.5 Low 10:19:31 - 10:49:31 5986
Klamath Falls 10:34:35 -16.5 AT Down 25.5 191.3 Low 10:19:35 - 10:49:35 5977
Tulelake 10:34:33 -16.6 AT Down 25.7 191.7 Low 10:19:33 - 10:49:33 5960
Lakeview 10:34:30 -15.9 AT Down 25.3 192.8 Low 10:19:30 - 10:49:30 5958
Cedarville 10:34:29 -16.3 AT Down 25.9 193.0 Low 10:19:29 - 10:49:29 5922
Fall River/Burney 10:34:32 -17.3 AT Down 26.6 191.8 Low 10:19:32 - 10:49:32 5912
Susanville 10:34:30 -17.4 AT Down 27.1 192.7 Low 10:19:30 - 10:49:30 5869
Greenville 10:34:31 -17.8 AT Down 27.4 192.4 Low 10:19:31 - 10:49:31 5858
Gimple 10:34:31 -17.8 AT Down 27.4 192.5 Low 10:19:31 - 10:49:31 5857
Quincy 10:34:31 -18.0 AT Down 27.6 192.4 Low 10:19:31 - 10:49:31 5847
Portola 10:34:28 -17.8 AT Down 27.6 192.9 Low 10:19:28 - 10:49:28 5834
Reno 10:34:26 -17.8 AT Down 27.8 193.6 Low 10:19:26 - 10:49:26 5810
Carson City 10:34:26 -18.0 Dark Down 28.1 193.7 Low 10:19:26 - 10:49:26 5790
Gardnerville 10:34:26 -18.2 Dark Down 28.3 193.8 Low 10:19:26 - 10:49:26 5776
Yerington 10:34:23 -17.9 AT Down 28.2 194.3 Low 10:19:23 - 10:49:23 5771
Hawthorne 10:34:21 -18.0 AT Down 28.5 194.9 Low 10:19:21 - 10:49:21 5737
Lee Vining 10:34:23 -18.7 Dark Down 29.2 194.5 Low 10:19:23 - 10:49:23 5711
Tonopah 10:34:16 -17.7 AT Down 28.7 196.5 Low 10:19:16 - 10:49:16 5689
Bishop 10:34:20 -18.8 Dark Down 29.6 195.4 Low 10:19:20 - 10:49:20 5666
Lone Pine 10:34:18 -19.2 Dark Down 30.3 195.8 Up 10:19:18 - 10:49:18 5615
Beatty 10:34:13 -18.3 Dark Down 29.7 197.1 Low 10:19:13 - 10:49:13 5613
Niwot 10:33:34 -9.8 NT Down 23.3 207.8 Low 10:18:34 - 10:48:34 5596
SwRI 10:33:34 -9.9 NT Down 23.4 207.7 Low 10:18:34 - 10:48:34 5592
Indian Springs 10:34:09 -18.0 Dark Down 29.7 198.3 Low 10:19:09 - 10:49:09 5577
CPSLO 10:34:28 -21.5 Dark Down 32.0 193.3 Up 10:19:28 - 10:49:28 5573
Henderson 10:34:06 -18.0 Dark Down 30.1 199.1 Up 10:19:06 - 10:49:06 5532
Searchlight/Boulder City 10:34:05 -18.4 Dark Down 30.6 199.2 Up 10:19:05 - 10:49:05 5495
Patrick 10:34:01 -17.9 AT Down 30.4 200.3 Up 10:19:01 - 10:49:01 5474
Laughlin/Bullhead City 10:34:04 -18.5 Dark Down 30.8 199.6 Up 10:19:04 - 10:49:04 5471
Wildwood 10:34:19 -21.4 Dark Down 32.8 195.7 Up 10:19:19 - 10:49:19 5467
Kingman/Dolan Springs 10:34:01 -18.2 Dark Down 30.6 200.2 Up 10:19:01 - 10:49:01 5463
Mohave Valley 10:34:04 -18.7 Dark Down 31.0 199.7 Up 10:19:04 - 10:49:04 5453
DCO 10:33:59 -17.7 AT Down 30.4 201.1 Up 10:18:59 - 10:48:59 5442
Lake Havasu City 10:34:02 -18.8 Dark Down 31.3 200.0 Up 10:19:02 - 10:49:02 5423
Idyllwild 10:34:11 -20.7 Dark Down 32.7 197.7 Up 10:19:11 - 10:49:11 5414
Parker 10:34:01 -19.1 Dark Down 31.7 200.1 Up 10:19:01 - 10:49:01 5400
Blythe 10:34:03 -19.6 Dark Down 32.2 199.9 Up 10:19:03 - 10:49:03 5371
Calipatria 10:34:06 -20.5 Dark Down 33.0 199.1 Up 10:19:06 - 10:49:06 5354
Yuma 10:34:02 -20.3 Dark Down 33.1 200.1 Up 10:19:02 - 10:49:02 5310

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 01KD77, (2019/06/08 10:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 32.29 107
Nunki          18:55:15.9 -26:17:49  2.0  4.96 139
30 Sgr         18:50:50.5 -22:09:44  6.3  0.72 138
PPM 268985     18:51:18.8 -22:01:06  8.5  0.65 138
PPM 268952     18:50:06.5 -21:51:03  9.1  0.36 138
01KD77         18:49:32.3 -21:30:49 16.5       138
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:14:02 UT

Marc W. Buie, Southwest Research Institute

RECON