RECON: TNO occultation with 10JF210

Event between 10JF210 and star GA1060:03265571 with event index number of 1566926

Geocentric closest approach at 2021/05/20 05:03:32 UTC

J2000 position of star is 09:39:31.9 +16:44:33
Equinox of date position of star is 09:40:41.5 +16:38:47
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 13 degrees from the moon. Moon is 55% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 42.6 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 8.3 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 607 seconds.
The 1-sigma cross-track error in the shadow position is 2853 km.
The sky-plane scale is 30963.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=311.9 km assuming a 5% albedo -- 37.4 sec chord
Diameter=127.3 km assuming a 30% albedo -- 15.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 10JF210, (2021/05/20 05:04UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:30.5 +11:51:43  1.3  8.46   7
16Psi Leo      09:44:53.6 +13:55:22  5.3  2.90  12
PPM 126642     09:39:09.3 +16:44:13  8.4  0.38  13
PPM 126651     09:39:45.3 +16:41:37 10.0  0.23  13
10JF210        09:40:42.5 +16:38:42 16.3        13
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 1.5 sigma about the mid-time.
The median site spacing is 5.0 km RECON observability=0.6 and success probability=6.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Dunrhomin 05:07:33 -24.5 Dark Up 29.7 267.2 Low 04:52:33 - 05:22:33 -3186
Clarence Fulton 05:04:41 -10.4 NT Up 37.9 248.6 Up 04:49:41 - 05:19:41 -3376
Kelowna 05:04:41 -10.7 NT Up 38.2 248.7 Up 04:49:41 - 05:19:41 -3396
Peachland 05:04:41 -10.6 NT Up 38.4 248.5 Up 04:49:41 - 05:19:41 -3411
Penticton 05:04:41 -10.9 NT Up 38.3 248.8 Up 04:49:41 - 05:19:41 -3411
Summerland 05:04:41 -10.8 NT Up 38.4 248.7 Up 04:49:41 - 05:19:41 -3413
Anarchist Mountain Observatory 05:04:41 -11.4 NT Up 38.4 249.4 Up 04:49:41 - 05:19:41 -3424
Oliver 05:04:41 -11.2 NT Up 38.5 249.1 Up 04:49:41 - 05:19:41 -3425
Tonasket 05:04:41 -11.6 NT Up 38.6 249.6 Up 04:49:41 - 05:19:41 -3440
Okanogan 05:04:41 -11.8 NT Up 38.8 249.7 Up 04:49:41 - 05:19:41 -3460
Brewster 05:04:41 -11.9 NT Up 39.0 249.7 Up 04:49:41 - 05:19:41 -3479
Manson/Chelan 05:04:41 -11.9 NT Up 39.3 249.5 Up 04:49:41 - 05:19:41 -3503
Wenatchee 05:04:41 -12.2 AT Up 39.6 249.7 Up 04:49:41 - 05:19:41 -3531
Pasco 05:04:41 -13.6 AT Up 39.2 251.7 Up 04:49:41 - 05:19:41 -3543
PNWRO 05:04:41 -13.9 AT Up 39.1 252.1 Up 04:49:41 - 05:19:41 -3547
Ellensburg 05:04:41 -12.4 AT Up 39.8 249.8 Up 04:49:41 - 05:19:41 -3559
Yakima 05:04:41 -12.7 AT Up 40.0 250.1 Up 04:49:41 - 05:19:41 -3580
Toppenish/White Swan 05:04:41 -12.9 AT Up 40.0 250.5 Up 04:49:41 - 05:19:41 -3584
Victoria 05:04:41 -10.0 NT Up 41.1 245.9 Up 04:49:41 - 05:19:41 -3604
Goldendale 05:04:41 -13.1 AT Up 40.4 250.5 Up 04:49:41 - 05:19:41 -3629
The Dalles 05:04:41 -13.1 AT Up 40.7 250.4 Up 04:49:41 - 05:19:41 -3655
Maupin 05:04:41 -13.5 AT Up 40.8 250.8 Up 04:49:41 - 05:19:41 -3674
Oregon Observatory 05:05:52 -14.4 AT Up 41.3 251.8 Up 04:50:52 - 05:20:52 -3713
North Lake 05:06:06 -15.2 AT Up 41.0 252.9 Up 04:51:06 - 05:21:06 -3718
La Pine/Gilchrist 05:05:57 -14.5 AT Up 41.4 251.9 Up 04:50:57 - 05:20:57 -3725
Paisley 05:06:15 -15.8 AT Up 40.9 253.7 Up 04:51:15 - 05:21:15 -3727
Redmond 05:04:41 -14.1 AT Up 41.2 251.5 Up 04:49:41 - 05:19:41 -3729
Lakeview 05:06:23 -16.3 AT Up 40.9 254.3 Up 04:51:23 - 05:21:23 -3741
Sisters 05:04:41 -13.9 AT Up 41.4 251.1 Up 04:49:41 - 05:19:41 -3743
Bend 05:04:41 -14.2 AT Up 41.3 251.5 Up 04:49:41 - 05:19:41 -3747
Cedarville 05:06:29 -16.9 AT Up 40.9 255.0 Up 04:51:29 - 05:21:29 -3763
George/Scottsdale 05:08:37 -27.3 Dark Up 35.2 267.3 Up 04:53:37 - 05:23:37 -3768
Patrick 05:08:08 -24.9 Dark Up 36.8 264.8 Up 04:53:08 - 05:23:08 -3773
Kingman/Dolan Springs 05:08:11 -25.0 Dark Up 37.0 264.9 Up 04:53:11 - 05:23:11 -3793
Henderson 05:07:57 -23.8 Dark Up 37.7 263.6 Up 04:52:57 - 05:22:57 -3793
Tonopah 05:07:23 -21.1 Dark Up 39.3 260.3 Up 04:52:23 - 05:22:23 -3794
Indian Springs 05:07:48 -23.1 Dark Up 38.2 262.7 Up 04:52:48 - 05:22:48 -3798
Klamath Falls 05:06:15 -15.5 AT Up 41.9 253.0 Up 04:51:15 - 05:21:15 -3804
Laughlin/Bullhead City 05:08:08 -24.8 Dark Up 37.4 264.5 Up 04:53:08 - 05:23:08 -3819
Beatty 05:07:37 -22.2 Dark Up 39.1 261.6 Up 04:52:37 - 05:22:37 -3832
Mohave Valley 05:08:09 -25.0 Dark Up 37.4 264.8 Up 04:53:09 - 05:23:09 -3833
Hawthorne 05:07:13 -20.0 Dark Up 40.3 258.9 Up 04:52:13 - 05:22:13 -3837
Susanville 05:06:41 -17.5 AT Up 41.5 255.6 Up 04:51:41 - 05:21:41 -3839
Yerington 05:07:05 -19.3 Dark Up 40.7 258.1 Up 04:52:05 - 05:22:05 -3839
Lake Havasu City 05:08:18 -25.4 Dark Up 37.2 265.2 Up 04:53:18 - 05:23:18 -3842
Reno 05:06:54 -18.6 Dark Up 41.1 257.1 Up 04:51:54 - 05:21:54 -3842
Fall River/Burney 05:06:30 -16.6 AT Up 41.9 254.4 Up 04:51:30 - 05:21:30 -3843
Carson City 05:06:58 -18.9 Dark Up 41.1 257.4 Up 04:51:58 - 05:21:58 -3859
Parker 05:08:23 -25.7 Dark Up 37.2 265.5 Up 04:53:23 - 05:23:23 -3859
Portola 05:06:48 -18.0 Dark Up 41.5 256.3 Up 04:51:48 - 05:21:48 -3860
Gimple 05:06:41 -17.6 AT Up 41.8 255.7 Up 04:51:41 - 05:21:41 -3862
Greenville 05:06:41 -17.5 AT Up 41.8 255.6 Up 04:51:41 - 05:21:41 -3866
Gardnerville 05:07:04 -19.1 Dark Up 41.1 257.7 Up 04:52:04 - 05:22:04 -3869
Quincy 05:06:44 -17.7 AT Up 41.9 255.8 Up 04:51:44 - 05:21:44 -3876
Bishop 05:07:27 -21.0 Dark Up 40.3 260.1 Up 04:52:27 - 05:22:27 -3885
Lee Vining 05:07:16 -20.2 Dark Up 40.8 259.0 Up 04:52:16 - 05:22:16 -3888
Blythe 05:08:26 -26.0 Dark Up 37.5 265.8 Up 04:53:26 - 05:23:26 -3901
Yuma 05:08:34 -26.7 Dark Up 37.6 266.5 Up 04:53:34 - 05:23:34 -3954
Calipatria 05:08:30 -25.9 Dark Up 38.3 265.6 Up 04:53:30 - 05:23:30 -3973
Idyllwild 05:08:18 -24.8 Dark Up 39.3 264.3 Up 04:53:18 - 05:23:18 -3996
Wildwood 05:08:07 -23.4 Dark Up 40.8 262.8 Up 04:53:07 - 05:23:07 -4069
CPSLO 05:07:41 -21.3 Dark Up 42.4 260.3 Up 04:52:41 - 05:22:41 -4105

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 10JF210, (2021/05/20 05:04UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  8.46   7
16Psi Leo      09:43:43.9 +14:01:18  5.3  2.90  12
PPM 126642     09:37:58.6 +16:50:02  8.4  0.38  13
PPM 126651     09:38:34.6 +16:47:27 10.0  0.23  13
10JF210        09:39:31.9 +16:44:33 16.3        13
Positions are for J2000

Event circumstances last updated at 2021/01/21 21:02:36 UT

Marc W. Buie, Southwest Research Institute

RECON