RECON: TNO occultation with 01KD77

Event between 01KD77 and star GDR2_278.938_-21.718 with event index number of 144562

Geocentric closest approach at 2018/08/20 04:47:12 UTC

J2000 position of star is 18:35:45.2 -21:43:04
Equinox of date position of star is 18:36:51.4 -21:42:06
Stellar brightness G=15.7, use SENSEUP=128
Star is 20 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 36.4 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 14.1 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 510 seconds.
The 1-sigma cross-track error in the shadow position is 2415 km.
The sky-plane scale is 25923.4 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 32.7 sec chord
Diameter=188.3 km assuming a 30% albedo -- 13.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2018/08/20 04:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.2 -26:28:18  0.9 29.15  12
Nunki          18:56:25.2 -26:16:19  2.0  6.39  25
PPM 268697     18:40:00.1 -21:02:06  6.1  0.99  21
PPM 268611     18:36:14.9 -21:57:52  8.2  0.30  20
PPM 268634     18:37:12.3 -21:25:43  9.1  0.28  20
01KD77         18:36:52.3 -21:42:05 15.7        20
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 1.8 sigma about the mid-time.
The median site spacing is 12.7 km RECON observability=1.0 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:46:16 -15.1 AT Up 19.3 181.6 Really Low 04:31:16 - 05:01:16 -3786
Tonasket 04:46:17 -15.2 AT Up 19.6 181.7 Really Low 04:31:17 - 05:01:17 -3795
Okanogan 04:46:17 -15.4 AT Up 19.9 181.5 Really Low 04:31:17 - 05:01:17 -3806
Brewster 04:46:18 -15.5 AT Up 20.2 181.3 Low 04:31:18 - 05:01:18 -3814
Manson/Chelan 04:46:21 -15.4 AT Up 20.4 181.0 Low 04:31:21 - 05:01:21 -3819
Entiat 04:46:20 -15.5 AT Up 20.6 180.9 Low 04:31:20 - 05:01:20 -3827
Wenatchee 04:46:21 -15.6 AT Up 20.9 180.8 Low 04:31:21 - 05:01:21 -3836
Ellensburg 04:46:22 -15.8 AT Up 21.3 180.6 Low 04:31:22 - 05:01:22 -3851
Yakima 04:46:22 -16.0 AT Up 21.7 180.6 Low 04:31:22 - 05:01:22 -3867
Toppenish/White Swan 04:46:21 -16.2 AT Up 21.9 180.7 Low 04:31:21 - 05:01:21 -3878
Pasco 04:46:15 -17.0 AT Up 22.0 182.0 Low 04:31:15 - 05:01:15 -3894
Goldendale 04:46:25 -16.4 AT Up 22.5 180.3 Low 04:31:25 - 05:01:25 -3897
The Dalles 04:46:27 -16.3 AT Up 22.7 180.0 Low 04:31:27 - 05:01:27 -3903
George/Umatilla 04:46:17 -17.1 AT Up 22.3 181.8 Low 04:31:17 - 05:01:17 -3906
PNWRO 04:46:14 -17.3 AT Up 22.2 182.2 Low 04:31:14 - 05:01:14 -3907
Maupin 04:46:26 -16.6 AT Up 23.1 180.1 Low 04:31:26 - 05:01:26 -3922
Madras/Culver 04:46:26 -16.9 AT Up 23.7 180.0 Low 04:31:26 - 05:01:26 -3946
Sisters 04:46:28 -16.9 AT Up 24.0 179.6 Low 04:31:28 - 05:01:28 -3957
Redmond 04:46:27 -17.1 AT Up 24.0 180.0 Low 04:31:27 - 05:01:27 -3961
Bend 04:46:28 -17.2 AT Up 24.2 179.8 Low 04:31:28 - 05:01:28 -3970
Oregon Observatory 04:46:28 -17.2 AT Up 24.4 179.7 Low 04:31:28 - 05:01:28 -3976
La Pine/Gilchrist 04:46:29 -17.3 AT Up 24.6 179.6 Low 04:31:29 - 05:01:29 -3985
North Lake 04:46:26 -17.9 AT Up 25.0 180.3 Low 04:31:26 - 05:01:26 -4011
Chiloquin 04:46:32 -17.8 AT Up 25.7 179.3 Low 04:31:32 - 05:01:32 -4034
Paisley 04:46:24 -18.5 Dark Up 25.6 180.6 Low 04:31:24 - 05:01:24 -4040
Klamath Falls 04:46:31 -18.1 Dark Up 26.1 179.4 Low 04:31:31 - 05:01:31 -4051
Lakeview 04:46:23 -18.9 Dark Up 26.1 180.8 Low 04:31:23 - 05:01:23 -4066
Tulelake 04:46:29 -18.4 Dark Up 26.3 179.7 Low 04:31:29 - 05:01:29 -4067
Cedarville 04:46:22 -19.4 Dark Up 26.7 181.0 Low 04:31:22 - 05:01:22 -4100
Fall River/Burney 04:46:30 -19.0 Dark Up 27.2 179.8 Low 04:31:30 - 05:01:30 -4113
Susanville 04:46:25 -19.8 Dark Up 27.9 180.5 Low 04:31:25 - 05:01:25 -4152
Greenville 04:46:26 -19.8 Dark Up 28.1 180.2 Low 04:31:26 - 05:01:26 -4164
Gimple 04:46:27 -19.8 Dark Up 28.1 180.3 Low 04:31:27 - 05:01:27 -4165
Quincy 04:46:27 -19.9 Dark Up 28.3 180.2 Low 04:31:27 - 05:01:27 -4174
Portola 04:46:25 -20.3 Dark Up 28.5 180.7 Low 04:31:25 - 05:01:25 -4186
Reno 04:46:20 -20.8 Dark Up 28.7 181.4 Low 04:31:20 - 05:01:20 -4206
Carson City 04:46:21 -21.1 Dark Up 29.1 181.4 Low 04:31:21 - 05:01:21 -4226
Gardnerville 04:46:20 -21.2 Dark Up 29.3 181.5 Low 04:31:20 - 05:01:20 -4239
Yerington 04:46:17 -21.6 Dark Up 29.3 182.1 Low 04:31:17 - 05:01:17 -4243
Hawthorne 04:46:14 -22.2 Dark Up 29.7 182.6 Low 04:31:14 - 05:01:14 -4274
Lee Vining 04:46:17 -22.2 Dark Up 30.3 182.1 Up 04:31:17 - 05:01:17 -4300
Tonopah 04:46:05 -23.3 Dark Up 30.1 184.1 Up 04:31:05 - 05:01:05 -4316
Bishop 04:46:13 -23.0 Dark Up 30.9 182.9 Up 04:31:13 - 05:01:13 -4342
Niwot 04:44:55 -28.3 Dark Up 26.5 196.2 Low 04:29:55 - 04:59:55 -4378
Beatty 04:46:03 -24.3 Dark Up 31.2 184.7 Up 04:31:03 - 05:01:03 -4388
Lone Pine 04:46:10 -23.7 Dark Up 31.6 183.3 Up 04:31:10 - 05:01:10 -4389
Indian Springs 04:45:56 -25.2 Dark Up 31.5 185.8 Up 04:30:56 - 05:00:56 -4420
CPSLO 04:46:27 -22.9 Dark Up 33.0 180.5 Up 04:31:27 - 05:01:27 -4438
Henderson 04:45:52 -25.9 Dark Up 32.0 186.6 Up 04:30:52 - 05:00:52 -4461
Searchlight/Boulder City 04:45:52 -26.3 Dark Up 32.5 186.7 Up 04:30:52 - 05:00:52 -4496
Patrick 04:45:45 -27.0 Dark Up 32.5 187.8 Up 04:30:45 - 05:00:45 -4514
Laughlin/Bullhead City 04:45:49 -26.7 Dark Up 32.8 187.1 Up 04:30:49 - 05:00:49 -4519
Kingman/Dolan Springs 04:45:46 -27.0 Dark Up 32.7 187.7 Up 04:30:46 - 05:00:46 -4525
Wildwood 04:46:15 -24.9 Dark Up 34.1 182.8 Up 04:31:15 - 05:01:15 -4534
Mohave Valley 04:45:50 -26.9 Dark Up 33.1 187.1 Up 04:30:50 - 05:00:50 -4536
DCO 04:45:40 -27.6 Dark Up 32.7 188.6 Up 04:30:40 - 05:00:40 -4543
Lake Havasu City 04:45:48 -27.3 Dark Up 33.4 187.4 Up 04:30:48 - 05:00:48 -4564
Idyllwild 04:46:03 -26.3 Dark Up 34.4 184.9 Up 04:31:03 - 05:01:03 -4580
Parker 04:45:48 -27.6 Dark Up 33.8 187.5 Up 04:30:48 - 05:00:48 -4586
Blythe 04:45:50 -27.7 Dark Up 34.3 187.2 Up 04:30:50 - 05:00:50 -4615
Calipatria 04:45:56 -27.5 Dark Up 34.9 186.2 Up 04:30:56 - 05:00:56 -4634
Yuma 04:45:49 -28.3 Dark Up 35.3 187.3 Up 04:30:49 - 05:00:49 -4674

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, (2018/08/20 04:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 29.15  12
Nunki          18:55:15.9 -26:17:49  2.0  6.39  25
PPM 268697     18:38:53.3 -21:03:10  6.1  0.99  21
PPM 268611     18:35:07.7 -21:58:50  8.2  0.30  20
PPM 268634     18:36:05.4 -21:26:42  9.1  0.28  20
01KD77         18:35:45.2 -21:43:04 15.7        20
Positions are for J2000

Event circumstances last updated at 2018/05/24 17:57:38 UT

Marc W. Buie, Southwest Research Institute

RECON