RECON: TNO occultation with 01KD77

Event between 01KD77 and star UC4-342-163306 with event index number of 207722

Geocentric closest approach at 2019/08/16 06:41:33 UTC

J2000 position of star is 18:43:27.7 -21:38:40
Equinox of date position of star is 18:44:31.2 -21:37:33
Stellar brightness R=16.1, use SENSEUP=128
Star is 52 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 36.5 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 16.3 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 550 seconds.
The 1-sigma cross-track error in the shadow position is 1844 km.
The sky-plane scale is 25936.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 28.4 sec chord
Diameter=188.3 km assuming a 30% albedo -- 11.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 01KD77, (2019/08/16 06:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.8 -26:28:26  0.9 30.89  81
Nunki          18:56:28.8 -26:16:14  2.0  5.38  49
28 Sgr         18:47:31.6 -22:22:12  4.9  1.00  51
PPM 268766     18:43:09.7 -21:18:09  8.5  0.47  52
PPM 268804     18:44:32.6 -21:17:56  8.9  0.33  52
01KD77         18:44:38.2 -21:37:25 16.1        51
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 1.6 sigma about the mid-time.
The median site spacing is 16.7 km RECON observability=0.7 and success probability=3.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:39:08 -24.6 Dark Up 16.3 203.1 Really Low 06:24:08 - 06:54:08 4776
Tonasket 06:39:08 -24.8 Dark Up 16.5 203.1 Really Low 06:24:08 - 06:54:08 4765
Okanogan 06:39:08 -25.1 Dark Up 16.8 203.0 Really Low 06:24:08 - 06:54:08 4753
Brewster 06:39:08 -25.3 Dark Up 17.1 202.8 Really Low 06:24:08 - 06:54:08 4745
Manson/Chelan 06:39:09 -25.4 Dark Up 17.4 202.5 Really Low 06:24:09 - 06:54:09 4743
Entiat 06:39:09 -25.6 Dark Up 17.7 202.5 Really Low 06:24:09 - 06:54:09 4734
Wenatchee 06:39:09 -25.8 Dark Up 17.9 202.4 Really Low 06:24:09 - 06:54:09 4724
Ellensburg 06:39:09 -26.1 Dark Up 18.4 202.3 Really Low 06:24:09 - 06:54:09 4710
Yakima 06:39:09 -26.5 Dark Up 18.7 202.3 Really Low 06:24:09 - 06:54:09 4691
Toppenish/White Swan 06:39:08 -26.7 Dark Up 18.9 202.5 Really Low 06:24:08 - 06:54:08 4678
Goldendale 06:39:09 -27.1 Dark Up 19.5 202.1 Really Low 06:24:09 - 06:54:09 4660
The Dalles 06:39:10 -27.2 Dark Up 19.8 201.8 Really Low 06:24:10 - 06:54:10 4655
Pasco 06:39:02 -27.2 Dark Up 18.7 203.7 Really Low 06:24:02 - 06:54:02 4647
George/Umatilla 06:39:04 -27.4 Dark Up 19.0 203.5 Really Low 06:24:04 - 06:54:04 4636
Maupin 06:39:09 -27.6 Dark Up 20.2 202.0 Low 06:24:09 - 06:54:09 4633
PNWRO 06:39:01 -27.5 Dark Up 18.8 203.9 Really Low 06:24:01 - 06:54:01 4631
Madras/Culver 06:39:09 -28.1 Dark Up 20.7 202.0 Low 06:24:09 - 06:54:09 4607
Sisters 06:39:10 -28.3 Dark Up 21.1 201.6 Low 06:24:10 - 06:54:10 4599
Redmond 06:39:08 -28.4 Dark Up 21.0 202.0 Low 06:24:08 - 06:54:08 4590
Bend 06:39:08 -28.6 Dark Up 21.3 201.9 Low 06:24:08 - 06:54:08 4583
Oregon Observatory 06:39:08 -28.7 Dark Up 21.5 201.8 Low 06:24:08 - 06:54:08 4576
La Pine/Gilchrist 06:39:08 -28.9 Dark Up 21.7 201.8 Low 06:24:08 - 06:54:08 4567
North Lake 06:39:06 -29.4 Dark Up 21.9 202.4 Low 06:24:06 - 06:54:06 4533
Chiloquin 06:39:09 -29.7 Dark Up 22.8 201.6 Low 06:24:09 - 06:54:09 4516
Paisley 06:39:03 -30.0 Dark Up 22.3 202.8 Low 06:24:03 - 06:54:03 4497
Klamath Falls 06:39:08 -30.1 Dark Up 23.1 201.8 Low 06:24:08 - 06:54:08 4496
Tulelake 06:39:06 -30.4 Dark Up 23.3 202.1 Low 06:24:06 - 06:54:06 4476
Lakeview 06:39:01 -30.6 Dark Up 22.7 203.1 Low 06:24:01 - 06:54:01 4465
Cedarville 06:39:00 -31.2 Dark Up 23.3 203.4 Low 06:24:00 - 06:54:00 4426
Fall River/Burney 06:39:04 -31.3 Dark Up 24.1 202.3 Low 06:24:04 - 06:54:04 4424
Susanville 06:39:00 -32.1 Dark Up 24.5 203.1 Low 06:24:00 - 06:54:00 4373
Greenville 06:39:01 -32.2 Dark Up 24.8 202.9 Low 06:24:01 - 06:54:01 4364
Gimple 06:39:01 -32.2 Dark Up 24.8 203.0 Low 06:24:01 - 06:54:01 4362
Quincy 06:39:01 -32.4 Dark Up 25.0 202.9 Low 06:24:01 - 06:54:01 4352
Portola 06:38:59 -32.7 Dark Up 25.0 203.4 Low 06:23:59 - 06:53:59 4335
Reno 06:38:55 -33.1 Dark Up 25.0 204.1 Low 06:23:55 - 06:53:55 4306
Carson City 06:38:55 -33.4 Dark Up 25.3 204.1 Low 06:23:55 - 06:53:55 4284
Gardnerville 06:38:54 -33.7 Dark Up 25.5 204.2 Low 06:23:54 - 06:53:54 4269
Yerington 06:38:53 -33.8 Dark Up 25.3 204.8 Low 06:23:53 - 06:53:53 4259
Hawthorne 06:38:50 -34.4 Dark Up 25.6 205.4 Low 06:23:50 - 06:53:50 4219
Lee Vining 06:38:50 -34.8 Dark Up 26.2 205.0 Low 06:23:50 - 06:53:50 4196
Tonopah 06:38:41 -35.3 Dark Up 25.5 206.8 Low 06:23:41 - 06:53:41 4159
Bishop 06:38:46 -35.6 Dark Up 26.5 205.8 Low 06:23:46 - 06:53:46 4143
Lone Pine 06:38:44 -36.4 Dark Up 27.1 206.3 Low 06:23:44 - 06:53:44 4087
Beatty 06:38:38 -36.5 Dark Up 26.4 207.5 Low 06:23:38 - 06:53:38 4076
CPSLO 06:38:54 -36.6 Dark Up 29.2 204.1 Low 06:23:54 - 06:53:54 4062
Indian Springs 06:38:32 -37.1 Dark Up 26.3 208.6 Low 06:23:32 - 06:53:32 4029
Niwot 06:37:54 -35.7 Dark Up 18.9 217.0 Really Low 06:22:54 - 06:52:54 3988
Henderson 06:38:28 -37.8 Dark Up 26.5 209.3 Low 06:23:28 - 06:53:28 3977
Searchlight/Boulder City 06:38:27 -38.3 Dark Up 26.9 209.5 Low 06:23:27 - 06:53:27 3939
Wildwood 06:38:43 -38.5 Dark Up 29.5 206.4 Low 06:23:43 - 06:53:43 3935
Laughlin/Bullhead City 06:38:25 -38.7 Dark Up 27.1 209.9 Low 06:23:25 - 06:53:25 3910
Patrick 06:38:22 -38.7 Dark Up 26.6 210.5 Low 06:23:22 - 06:53:22 3909
Kingman/Dolan Springs 06:38:23 -38.8 Dark Up 26.8 210.4 Low 06:23:23 - 06:53:23 3899
Mohave Valley 06:38:25 -39.0 Dark Up 27.3 210.0 Low 06:23:25 - 06:53:25 3891
DCO 06:38:18 -39.1 Dark Up 26.5 211.2 Low 06:23:18 - 06:53:18 3871
Idyllwild 06:38:34 -39.4 Dark Up 29.2 208.3 Low 06:23:34 - 06:53:34 3867
Lake Havasu City 06:38:24 -39.4 Dark Up 27.5 210.3 Low 06:23:24 - 06:53:24 3858
Parker 06:38:22 -39.8 Dark Up 27.8 210.4 Low 06:23:22 - 06:53:22 3833
Blythe 06:38:24 -40.2 Dark Up 28.4 210.3 Low 06:23:24 - 06:53:24 3805
Calipatria 06:38:27 -40.3 Dark Up 29.2 209.6 Low 06:23:27 - 06:53:27 3794
Yuma 06:38:22 -41.0 Dark Up 29.2 210.5 Low 06:23:22 - 06:53:22 3742

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, (2019/08/16 06:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.89  81
Nunki          18:55:15.9 -26:17:49  2.0  5.38  49
28 Sgr         18:46:20.7 -22:23:32  4.9  1.00  51
PPM 268766     18:41:59.3 -21:19:21  8.5  0.47  52
PPM 268804     18:43:22.3 -21:19:11  8.9  0.33  52
01KD77         18:43:27.7 -21:38:40 16.1        52
Positions are for J2000

Event circumstances last updated at 2017/09/01 17:00:56 UT

Marc W. Buie, Southwest Research Institute

RECON