RECON: TNO occultation with 11BN170

Event between 11BN170 and star GA1140:03170929 with event index number of 1568792

Geocentric closest approach at 2022/12/27 05:54:26 UTC

J2000 position of star is 09:24:15.7 +25:44:12
Equinox of date position of star is 09:25:25.8 +25:38:57
Stellar brightness G=14.3, use SENSEUP=64
Star is 166 degrees from the moon. Moon is 20% illuminated.
TNO apparent brightness V=25.5

[RECON map]
TNO is 35.2 AU from the Sun and 34.5 AU from the Earth.
The TNO is moving 17.6 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is 3343 km.
The sky-plane scale is 24997.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=269.2 km assuming a 5% albedo -- 3.4 sec chord
Diameter=109.9 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 11BN170, (2022/12/27 05:54UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.7 +11:51:14  1.3 17.25 176
1Kap Leo       09:25:59.3 +26:04:56  4.5  0.45 165
PPM 099543     09:25:28.0 +25:49:06  7.9  0.18 165
11BN170        09:25:35.7 +25:38:13 14.3       166
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 2.7 sigma about the mid-time.
The median site spacing is 25.7 km RECON observability=1.0 and success probability=14.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:59:36 -54.6 Dark Down 29.0 83.7 Low 05:44:36 - 06:14:36 3743
Kelowna 05:59:36 -54.7 Dark Down 28.9 83.4 Low 05:44:36 - 06:14:36 3704
Peachland 05:59:37 -54.7 Dark Down 28.7 83.1 Low 05:44:37 - 06:14:37 3697
Summerland 05:59:39 -54.8 Dark Down 28.7 83.1 Low 05:44:39 - 06:14:39 3680
Penticton 05:59:39 -54.9 Dark Down 28.8 83.2 Low 05:44:39 - 06:14:39 3671
Oliver 05:59:39 -55.1 Dark Down 28.7 83.0 Low 05:44:39 - 06:14:39 3633
Victoria 05:59:46 -53.4 Dark Down 26.2 79.9 Low 05:44:46 - 06:14:46 3630
Anarchist Mountain Observatory 05:59:37 -55.3 Dark Down 28.9 83.0 Low 05:44:37 - 06:14:37 3612
Tonasket 05:59:38 -55.5 Dark Down 28.8 82.8 Low 05:44:38 - 06:14:38 3580
Okanogan 05:59:39 -55.6 Dark Down 28.6 82.5 Low 05:44:39 - 06:14:39 3546
Brewster 05:59:41 -55.6 Dark Down 28.5 82.2 Low 05:44:41 - 06:14:41 3521
Manson/Chelan 05:59:41 -55.5 Dark Down 28.2 81.8 Low 05:44:41 - 06:14:41 3504
Entiat 05:59:42 -55.6 Dark Down 28.1 81.7 Low 05:44:42 - 06:14:42 3482
Wenatchee 05:59:43 -55.7 Dark Down 28.0 81.5 Low 05:44:43 - 06:14:43 3456
Ellensburg 05:59:43 -55.8 Dark Down 27.8 81.1 Low 05:44:43 - 06:14:43 3416
Yakima 05:59:44 -56.0 Dark Down 27.7 80.9 Low 05:44:44 - 06:14:44 3373
Toppenish/White Swan 05:59:43 -56.3 Dark Down 27.8 80.9 Low 05:44:43 - 06:14:43 3347
Pasco 05:59:41 -57.0 Dark Down 28.7 81.7 Low 05:44:41 - 06:14:41 3312
Goldendale 05:59:45 -56.3 Dark Down 27.4 80.3 Low 05:44:45 - 06:14:45 3295
PNWRO 05:59:41 -57.3 Dark Down 28.8 81.7 Low 05:44:41 - 06:14:41 3281
The Dalles 05:59:47 -56.2 Dark Down 27.1 80.0 Low 05:44:47 - 06:14:47 3277
Maupin 05:59:46 -56.5 Dark Down 27.1 79.8 Low 05:44:46 - 06:14:46 3230
Sisters 05:59:49 -56.6 Dark Down 26.7 79.1 Low 05:44:49 - 06:14:49 3145
Redmond 05:59:48 -56.9 Dark Down 26.9 79.3 Low 05:44:48 - 06:14:48 3135
Bend 05:59:49 -56.9 Dark Down 26.8 79.1 Low 05:44:49 - 06:14:49 3115
Oregon Observatory 05:59:49 -56.9 Dark Down 26.7 79.0 Low 05:44:49 - 06:14:49 3098
La Pine/Gilchrist 05:59:50 -56.9 Dark Down 26.6 78.8 Low 05:44:50 - 06:14:50 3078
North Lake 05:59:48 -57.5 Dark Down 26.9 79.0 Low 05:44:48 - 06:14:48 3019
Paisley 05:59:49 -58.0 Dark Down 27.1 78.9 Low 05:44:49 - 06:14:49 2953
Klamath Falls 05:59:50 -57.4 Dark Down 26.1 78.0 Low 05:44:50 - 06:14:50 2927
Lakeview 05:59:48 -58.4 Dark Down 27.1 78.8 Low 05:44:48 - 06:14:48 2895
Cedarville 05:59:49 -58.8 Dark Down 27.1 78.6 Low 05:44:49 - 06:14:49 2821
Fall River/Burney 05:59:50 -58.2 Dark Down 26.1 77.6 Low 05:44:50 - 06:14:50 2792
Susanville 05:59:50 -58.9 Dark Down 26.5 77.7 Low 05:44:50 - 06:14:50 2709
Greenville 05:59:50 -58.8 Dark Down 26.3 77.4 Low 05:44:50 - 06:14:50 2685
Gimple 05:59:50 -58.9 Dark Down 26.3 77.5 Low 05:44:50 - 06:14:50 2684
Quincy 05:59:49 -58.9 Dark Down 26.2 77.3 Low 05:44:49 - 06:14:49 2664
Portola 05:59:50 -59.3 Dark Down 26.5 77.6 Low 05:44:50 - 06:14:50 2640
Reno 05:59:50 -59.9 Dark Down 27.0 77.8 Low 05:44:50 - 06:14:50 2599
Carson City 05:59:50 -60.0 Dark Down 26.9 77.6 Low 05:44:50 - 06:14:50 2560
Gardnerville 05:59:50 -60.2 Dark Down 26.9 77.5 Low 05:44:50 - 06:14:50 2532
Yerington 05:59:49 -60.5 Dark Down 27.4 77.9 Low 05:44:49 - 06:14:49 2527
Niwot 05:59:12 -68.7 Dark Down 38.1 86.5 Up 05:44:12 - 06:14:12 2483
SwRI 05:59:13 -68.7 Dark Down 38.0 86.3 Up 05:44:13 - 06:14:13 2472
Hawthorne 05:59:48 -61.1 Dark Down 27.7 77.9 Low 05:44:48 - 06:14:48 2466
Lee Vining 05:59:49 -61.0 Dark Down 27.2 77.4 Low 05:44:49 - 06:14:49 2414
Tonopah 05:59:46 -62.3 Dark Down 28.6 78.4 Low 05:44:46 - 06:14:46 2391
Bishop 05:59:48 -61.7 Dark Down 27.6 77.4 Low 05:44:48 - 06:14:48 2336
Beatty 05:59:44 -63.1 Dark Down 28.8 78.0 Low 05:44:44 - 06:14:44 2257
Indian Springs 05:59:42 -64.0 Dark Down 29.5 78.4 Low 05:44:42 - 06:14:42 2204
CPSLO 05:59:50 -60.7 Dark Down 25.3 75.3 Low 05:44:50 - 06:14:50 2159
Henderson 05:59:40 -64.7 Dark Down 30.0 78.4 Low 05:44:40 - 06:14:40 2135
Searchlight/Boulder City 05:59:41 -65.0 Dark Down 29.9 78.2 Low 05:44:41 - 06:14:41 2071
Patrick 05:59:37 -65.8 Dark Down 30.7 78.6 Up 05:44:37 - 06:14:37 2050
Laughlin/Bullhead City 05:59:40 -65.4 Dark Down 30.1 78.1 Up 05:44:40 - 06:14:40 2034
Kingman/Dolan Springs 05:59:38 -65.8 Dark Down 30.5 78.4 Up 05:44:38 - 06:14:38 2028
DCO 05:59:36 -66.5 Dark Down 31.2 78.8 Up 05:44:36 - 06:14:36 2006
Mohave Valley 05:59:39 -65.5 Dark Down 30.1 78.0 Up 05:44:39 - 06:14:39 2004
Wildwood 05:59:49 -62.6 Dark Down 26.7 75.7 Low 05:44:49 - 06:14:49 1986
Lake Havasu City 05:59:39 -65.8 Dark Down 30.2 77.9 Up 05:44:39 - 06:14:39 1956
Parker 05:59:39 -66.0 Dark Down 30.1 77.7 Up 05:44:39 - 06:14:39 1917
Idyllwild 05:59:45 -64.2 Dark Down 28.1 76.4 Low 05:44:45 - 06:14:45 1912
Blythe 05:59:40 -65.9 Dark Down 29.8 77.3 Low 05:44:40 - 06:14:40 1865
George/Scottsdale 05:59:32 -68.0 Dark Down 32.0 78.5 Up 05:44:32 - 06:14:32 1838
Calipatria 05:59:43 -65.3 Dark Down 28.9 76.6 Low 05:44:43 - 06:14:43 1826
Yuma 05:59:40 -66.2 Dark Down 29.5 76.7 Low 05:44:40 - 06:14:40 1765

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 11BN170, (2022/12/27 05:54UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 17.25 176
1Kap Leo       09:24:39.2 +26:10:55  4.5  0.45 165
PPM 099543     09:24:08.0 +25:55:05  7.9  0.18 165
11BN170        09:24:15.7 +25:44:12 14.3       166
Positions are for J2000

Event circumstances last updated at 2020/02/25 22:42:34 UT

Marc W. Buie, Southwest Research Institute

RECON