RECON: TNO occultation with 84719

Event between (84719) 02VR128 and star UC4-589-008717 with event index number of 166798

Geocentric closest approach at 2018/11/30 07:37:10 UTC

J2000 position of star is 03:33:26.4 +27:45:44
Equinox of date position of star is 03:34:31.7 +27:49:18
Stellar brightness R=15.8, use SENSEUP=128
Star is 104 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 39.8 AU from the Sun and 38.9 AU from the Earth.
The TNO is moving 25.3 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 131 seconds.
The 1-sigma cross-track error in the shadow position is 2181 km.
The sky-plane scale is 28180.1 km/arcsec.

The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 25.0 sec chord
Diameter=257.6 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 84719, (2018/11/30 07:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.5 +16:32:45  0.8 18.30  93
44Zet Per      03:55:19.5 +31:56:18  2.8  6.09  98
11 Tau         03:41:54.3 +25:23:22  6.1  2.93 103
PPM 092643     03:36:35.2 +27:54:29  8.5  0.45 103
PPM 092586     03:33:05.6 +27:55:17  9.5  0.34 104
84719          03:34:35.3 +27:49:29 15.8       103
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 5.0 sigma about the mid-time.
The median site spacing is 25.2 km RECON observability=1.0 and success probability=13.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:36:21 -62.6 Dark Up 67.4 204.6 Up 07:24:57 - 07:47:45 4242
Tonasket 07:36:20 -62.9 Dark Up 67.6 204.8 Up 07:24:56 - 07:47:44 4218
Okanogan 07:36:21 -63.2 Dark Up 67.9 204.8 Up 07:24:57 - 07:47:45 4185
Brewster 07:36:22 -63.5 Dark Up 68.2 204.7 Up 07:24:58 - 07:47:46 4159
Manson/Chelan 07:36:23 -63.6 Dark Up 68.5 204.0 Up 07:24:59 - 07:47:47 4141
Entiat 07:36:24 -63.8 Dark Down 68.7 204.1 Up 07:25:00 - 07:47:48 4119
Wenatchee 07:36:24 -64.1 Dark Down 69.0 204.1 Up 07:25:00 - 07:47:48 4094
Ellensburg 07:36:24 -64.5 Dark Down 69.4 204.1 Up 07:25:00 - 07:47:48 4053
Yakima 07:36:25 -64.9 Dark Down 69.8 204.5 Up 07:25:01 - 07:47:49 4011
Toppenish/White Swan 07:36:24 -65.1 Dark Down 69.9 205.1 Up 07:25:00 - 07:47:48 3986
Pasco 07:36:21 -65.3 Dark Up 69.7 208.3 Up 07:24:57 - 07:47:45 3958
Goldendale 07:36:26 -65.6 Dark Down 70.6 204.8 Up 07:25:02 - 07:47:50 3933
PNWRO 07:36:20 -65.6 Dark Up 69.8 209.2 Up 07:24:56 - 07:47:44 3930
George/Umatilla 07:36:22 -65.6 Dark Up 70.0 208.2 Up 07:24:58 - 07:47:46 3926
The Dalles 07:36:27 -65.8 Dark Down 70.9 204.1 Up 07:25:03 - 07:47:51 3914
Maupin 07:36:27 -66.2 Dark Down 71.2 204.9 Up 07:25:03 - 07:47:51 3869
Madras/Culver 07:36:27 -66.8 Dark Down 71.7 205.5 Up 07:25:03 - 07:47:51 3811
Sisters 07:36:29 -67.0 Dark Down 72.2 204.7 Up 07:25:05 - 07:47:53 3782
Redmond 07:36:28 -67.1 Dark Down 72.1 205.8 Up 07:25:04 - 07:47:52 3774
Bend 07:36:28 -67.3 Dark Down 72.3 205.7 Up 07:25:04 - 07:47:52 3753
Oregon Observatory 07:36:29 -67.5 Dark Down 72.5 205.6 Up 07:25:05 - 07:47:53 3737
La Pine/Gilchrist 07:36:29 -67.6 Dark Down 72.7 205.7 Up 07:25:05 - 07:47:53 3716
North Lake 07:36:27 -68.2 Dark Down 72.9 208.0 Up 07:25:03 - 07:47:51 3662
Chiloquin 07:36:31 -68.7 Dark Down 73.8 206.4 Up 07:25:07 - 07:47:55 3602
Paisley 07:36:27 -68.7 Dark Down 73.3 209.9 Up 07:25:03 - 07:47:51 3598
Klamath Falls 07:36:31 -69.0 Dark Down 74.1 207.1 Up 07:25:07 - 07:47:55 3565
Lakeview 07:36:26 -69.3 Dark Down 73.6 211.3 Up 07:25:02 - 07:47:50 3541
Tulelake 07:36:30 -69.3 Dark Down 74.2 208.5 Up 07:25:06 - 07:47:54 3532
Cedarville 07:36:26 -69.9 Dark Down 74.1 213.0 Up 07:25:02 - 07:47:50 3469
Fall River/Burney 07:36:30 -70.2 Dark Down 75.0 210.3 Up 07:25:06 - 07:47:54 3433
Susanville 07:36:28 -71.0 Dark Down 75.2 213.9 Up 07:25:04 - 07:47:52 3355
Greenville 07:36:29 -71.2 Dark Down 75.6 213.6 Up 07:25:05 - 07:47:53 3330
Gimple 07:36:29 -71.2 Dark Down 75.6 213.8 Up 07:25:05 - 07:47:53 3328
Quincy 07:36:29 -71.4 Dark Down 75.8 214.0 Up 07:25:05 - 07:47:53 3308
Portola 07:36:28 -71.6 Dark Down 75.7 215.8 Up 07:25:04 - 07:47:52 3288
Reno 07:36:26 -71.9 Dark Down 75.6 218.3 Up 07:25:02 - 07:47:50 3250
Carson City 07:36:26 -72.3 Dark Down 75.8 219.3 Up 07:25:02 - 07:47:50 3211
Niwot 07:35:39 -69.1 Dark Up 66.3 246.1 Up 07:24:15 - 07:47:03 3198
Gardnerville 07:36:26 -72.5 Dark Down 76.0 220.0 Up 07:25:02 - 07:47:50 3184
Yerington 07:36:24 -72.6 Dark Down 75.7 221.6 Up 07:25:00 - 07:47:48 3182
Hawthorne 07:36:23 -73.1 Dark Down 75.7 224.4 Up 07:24:59 - 07:47:47 3125
Lee Vining 07:36:24 -73.6 Dark Down 76.4 224.6 Up 07:25:00 - 07:47:48 3070
Tonopah 07:36:18 -73.6 Dark Down 75.2 229.5 Up 07:24:54 - 07:47:42 3057
Bishop 07:36:22 -74.2 Dark Down 76.4 228.4 Up 07:24:58 - 07:47:46 2995
Beatty 07:36:17 -74.7 Dark Down 75.7 234.1 Up 07:24:53 - 07:47:41 2926
Lone Pine 07:36:22 -75.0 Dark Down 76.7 231.8 Up 07:24:58 - 07:47:46 2908
Indian Springs 07:36:13 -75.0 Dark Up 75.2 237.6 Up 07:24:49 - 07:47:37 2878
Henderson 07:36:11 -75.5 Dark Up 75.0 240.8 Up 07:24:47 - 07:47:35 2812
CPSLO 07:36:31 -76.0 Dark Down 79.1 228.7 Up 07:25:07 - 07:47:55 2802
Searchlight/Boulder City 07:36:11 -76.1 Dark Up 75.2 242.8 Up 07:24:47 - 07:47:35 2749
Patrick 07:36:08 -76.0 Dark Up 74.4 245.0 Up 07:24:44 - 07:47:32 2733
Laughlin/Bullhead City 07:36:10 -76.3 Dark Up 75.1 244.5 Up 07:24:46 - 07:47:34 2713
Kingman/Dolan Springs 07:36:09 -76.2 Dark Up 74.7 245.4 Up 07:24:45 - 07:47:33 2710
DCO 07:36:06 -76.1 Dark Up 74.0 247.2 Up 07:24:42 - 07:47:30 2693
Mohave Valley 07:36:10 -76.6 Dark Up 75.2 245.4 Up 07:24:46 - 07:47:34 2683
Wildwood 07:36:25 -77.5 Dark Down 78.5 239.8 Up 07:25:01 - 07:47:49 2641
Lake Havasu City 07:36:09 -77.0 Dark Up 75.2 247.3 Up 07:24:45 - 07:47:33 2636
Parker 07:36:09 -77.3 Dark Up 75.3 248.6 Up 07:24:45 - 07:47:33 2597
Idyllwild 07:36:18 -77.9 Dark Down 77.2 245.6 Up 07:24:54 - 07:47:42 2578
Blythe 07:36:11 -77.9 Dark Up 75.7 250.0 Up 07:24:47 - 07:47:35 2542
Calipatria 07:36:14 -78.5 Dark Down 76.6 250.3 Up 07:24:50 - 07:47:38 2498
Yuma 07:36:11 -78.8 Dark Up 76.0 253.4 Up 07:24:47 - 07:47:35 2441

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 84719, (2018/11/30 07:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 18.30  93
44Zet Per      03:54:07.9 +31:53:01  2.8  6.09  98
11 Tau         03:40:46.3 +25:19:46  6.1  2.93 103
PPM 092643     03:35:26.2 +27:50:47  8.5  0.45 103
PPM 092586     03:31:56.7 +27:51:30  9.5  0.34 104
84719          03:33:26.4 +27:45:44 15.8       104
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:05:07 UT

Marc W. Buie, Southwest Research Institute

RECON