RECON: TNO occultation with 84719

Event between (84719) 02VR128 and star UC4-589-008717 with event index number of 337973

Geocentric closest approach at 2018/11/30 07:36:24 UTC

J2000 position of star is 03:33:26.4 +27:45:44
Equinox of date position of star is 03:34:34.8 +27:49:28
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 179 seconds.
The 1-sigma cross-track error in the shadow position is 2796 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 07:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.5 +16:32:45  0.8 18.30  92
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 25.0 km RECON observability=1.0 and success probability=12.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 07:35:34 -61.7 Dark Up 66.5 203.3 Up 07:20:34 - 07:50:34 4709
Penticton 07:35:35 -62.0 Dark Up 66.9 203.3 Up 07:20:35 - 07:50:35 4673
Okanagan Falls 07:35:35 -62.2 Dark Up 67.1 203.4 Up 07:20:35 - 07:50:35 4654
Southern Okanagan 07:35:35 -62.4 Dark Up 67.2 203.6 Up 07:20:35 - 07:50:35 4637
Oroville 07:35:35 -62.6 Dark Up 67.4 204.1 Up 07:20:35 - 07:50:35 4610
Tonasket 07:35:35 -62.9 Dark Up 67.6 204.4 Up 07:20:35 - 07:50:35 4586
Okanogan 07:35:35 -63.2 Dark Up 68.0 204.4 Up 07:20:35 - 07:50:35 4552
Brewster 07:35:36 -63.4 Dark Up 68.3 204.2 Up 07:20:36 - 07:50:36 4526
Manson/Chelan 07:35:37 -63.6 Dark Down 68.6 203.6 Up 07:20:37 - 07:50:37 4509
Entiat 07:35:38 -63.8 Dark Down 68.8 203.7 Up 07:20:38 - 07:50:38 4487
Wenatchee 07:35:38 -64.1 Dark Down 69.0 203.7 Up 07:20:38 - 07:50:38 4461
Ellensburg 07:35:39 -64.5 Dark Down 69.5 203.6 Up 07:20:39 - 07:50:39 4421
Yakima 07:35:39 -64.9 Dark Down 69.9 204.0 Up 07:20:39 - 07:50:39 4378
Toppenish/White Swan 07:35:39 -65.1 Dark Down 70.0 204.7 Up 07:20:39 - 07:50:39 4354
Pasco 07:35:35 -65.3 Dark Up 69.7 207.9 Up 07:20:35 - 07:50:35 4326
Goldendale 07:35:40 -65.6 Dark Down 70.6 204.3 Up 07:20:40 - 07:50:40 4301
PNWRO 07:35:34 -65.6 Dark Up 69.9 208.7 Up 07:20:34 - 07:50:34 4297
George/Umatilla 07:35:36 -65.6 Dark Down 70.1 207.8 Up 07:20:36 - 07:50:36 4293
The Dalles 07:35:42 -65.8 Dark Down 70.9 203.6 Up 07:20:42 - 07:50:42 4282
Maupin 07:35:41 -66.2 Dark Down 71.3 204.4 Up 07:20:41 - 07:50:41 4236
Madras/Culver 07:35:42 -66.7 Dark Down 71.8 205.0 Up 07:20:42 - 07:50:42 4179
Sisters 07:35:44 -67.0 Dark Down 72.2 204.2 Up 07:20:44 - 07:50:44 4150
Redmond 07:35:42 -67.1 Dark Down 72.1 205.3 Up 07:20:42 - 07:50:42 4142
Bend 07:35:42 -67.3 Dark Down 72.4 205.2 Up 07:20:42 - 07:50:42 4121
Oregon Observatory 07:35:44 -67.4 Dark Down 72.6 205.1 Up 07:20:44 - 07:50:44 4105
La Pine/Gilchrist 07:35:44 -67.6 Dark Down 72.8 205.2 Up 07:20:44 - 07:50:44 4084
North Lake 07:35:42 -68.1 Dark Down 73.0 207.5 Up 07:20:42 - 07:50:42 4029
Chiloquin 07:35:45 -68.7 Dark Down 73.9 205.8 Up 07:20:45 - 07:50:45 3970
Paisley 07:35:41 -68.7 Dark Down 73.3 209.4 Up 07:20:41 - 07:50:41 3966
Klamath Falls 07:35:45 -69.0 Dark Down 74.2 206.6 Up 07:20:45 - 07:50:45 3933
Lakeview 07:35:40 -69.2 Dark Down 73.7 210.8 Up 07:20:40 - 07:50:40 3909
Tulelake 07:35:44 -69.3 Dark Down 74.3 207.9 Up 07:20:44 - 07:50:44 3900
Cedarville 07:35:40 -69.9 Dark Down 74.2 212.5 Up 07:20:40 - 07:50:40 3836
Fall River/Burney 07:35:45 -70.2 Dark Down 75.1 209.8 Up 07:20:45 - 07:50:45 3801
Susanville 07:35:43 -70.9 Dark Down 75.3 213.3 Up 07:20:43 - 07:50:43 3723
Greenville 07:35:44 -71.2 Dark Down 75.7 213.0 Up 07:20:44 - 07:50:44 3698
Gimple 07:35:44 -71.2 Dark Down 75.6 213.2 Up 07:20:44 - 07:50:44 3696
Quincy 07:35:44 -71.4 Dark Down 75.8 213.4 Up 07:20:44 - 07:50:44 3676
Portola 07:35:42 -71.6 Dark Down 75.7 215.2 Up 07:20:42 - 07:50:42 3656
Reno 07:35:40 -71.9 Dark Down 75.7 217.8 Up 07:20:40 - 07:50:40 3618
Carson City 07:35:40 -72.3 Dark Down 75.9 218.7 Up 07:20:40 - 07:50:40 3579
Niwot 07:34:53 -69.1 Dark Up 66.5 245.9 Up 07:19:53 - 07:49:53 3564
Gardnerville 07:35:40 -72.5 Dark Down 76.1 219.5 Up 07:20:40 - 07:50:40 3552
Yerington 07:35:38 -72.5 Dark Down 75.8 221.1 Up 07:20:38 - 07:50:38 3550
Hawthorne 07:35:37 -73.0 Dark Down 75.8 223.8 Up 07:20:37 - 07:50:37 3493
Lee Vining 07:35:39 -73.6 Dark Down 76.5 224.0 Up 07:20:39 - 07:50:39 3438
Tonopah 07:35:33 -73.6 Dark Down 75.4 229.0 Up 07:20:33 - 07:50:33 3425
Bishop 07:35:37 -74.2 Dark Down 76.5 227.9 Up 07:20:37 - 07:50:37 3363
Beatty 07:35:31 -74.7 Dark Down 75.8 233.6 Up 07:20:31 - 07:50:31 3293
Lone Pine 07:35:36 -75.0 Dark Down 76.8 231.3 Up 07:20:36 - 07:50:36 3276
Indian Springs 07:35:28 -75.0 Dark Up 75.3 237.2 Up 07:20:28 - 07:50:28 3246
Henderson 07:35:26 -75.5 Dark Up 75.1 240.4 Up 07:20:26 - 07:50:26 3180
CPSLO 07:35:46 -75.9 Dark Down 79.2 228.1 Up 07:20:46 - 07:50:46 3170
Searchlight/Boulder City 07:35:26 -76.1 Dark Up 75.3 242.4 Up 07:20:26 - 07:50:26 3116
Patrick 07:35:22 -76.0 Dark Up 74.6 244.6 Up 07:20:22 - 07:50:22 3100
Laughlin/Bullhead City 07:35:25 -76.3 Dark Up 75.2 244.1 Up 07:20:25 - 07:50:25 3080
Kingman/Dolan Springs 07:35:23 -76.3 Dark Up 74.8 245.0 Up 07:20:23 - 07:50:23 3077
DCO 07:35:20 -76.2 Dark Up 74.2 246.9 Up 07:20:20 - 07:50:20 3060
Mohave Valley 07:35:25 -76.6 Dark Up 75.3 245.1 Up 07:20:25 - 07:50:25 3050
Wildwood 07:35:39 -77.4 Dark Down 78.6 239.3 Up 07:20:39 - 07:50:39 3009
Lake Havasu City 07:35:24 -77.0 Dark Up 75.3 246.9 Up 07:20:24 - 07:50:24 3003
Parker 07:35:24 -77.3 Dark Up 75.4 248.2 Up 07:20:24 - 07:50:24 2964
Idyllwild 07:35:33 -77.9 Dark Down 77.4 245.2 Up 07:20:33 - 07:50:33 2946
Blythe 07:35:25 -77.9 Dark Up 75.8 249.6 Up 07:20:25 - 07:50:25 2910
Calipatria 07:35:29 -78.5 Dark Down 76.7 249.9 Up 07:20:29 - 07:50:29 2865
Yuma 07:35:26 -78.8 Dark Up 76.1 253.1 Up 07:20:26 - 07:50:26 2808

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 07:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 18.30  92
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 2018/10/11 06:14:01 UT

Marc W. Buie, Southwest Research Institute

RECON