MPEC 2021-L135 : 2017 DK109
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 2021-L134
Read MPEC 2021-L136
M.P.E.C. 2021-L135 Issued 2021 June 13, 04:40 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2017 DK109
Revision to MPEC 2017-E21
Additional Observations:
K17DA9K C2021 06 10.37959619 27 51.60 +53 34 33.6 22.08GVEL135V00
K17DA9K C2021 06 10.38449019 27 52.08 +53 34 43.6 21.91GVEL135V00
K17DA9K C2021 06 10.38937419 27 52.55 +53 34 53.9 22.04GVEL135V00
K17DA9K C2021 06 10.39425719 27 52.91 +53 35 04.3 21.28GVEL135V00
K17DA9K KC2021 06 10.43355519 27 56.72 +53 36 24.4 21.68GVEL135V06
K17DA9K KC2021 06 10.43904619 27 57.21 +53 36 35.6 20.80GVEL135V06
K17DA9K 1C2021 06 10.96411719 28 57.835+53 54 28.08 21.5 GVEL135Z84
K17DA9K 1C2021 06 10.97303219 28 58.710+53 54 46.95 22.2 GVEL135Z84
K17DA9K 1C2021 06 10.98194119 28 59.604+53 55 06.06 21.8 GVEL135Z84
K17DA9K KC2021 06 11.29143619 29 34.29 +54 05 42.6 21.65GVEL135V06
K17DA9K KC2021 06 11.29509719 29 34.64 +54 05 50.6 21.92GVEL135V06
K17DA9K KC2021 06 11.29875819 29 35.01 +54 05 58.2 22.13GVEL135V06
K17DA9K KC2021 06 11.30241919 29 35.37 +54 06 05.9 22.02GVEL135V06
K17DA9K KC2021 06 11.31278019 29 35.47 +54 06 27.5 22.1 VuEL135H21
K17DA9K KC2021 06 11.34120319 29 38.27 +54 07 25.7 22.1 VuEL135H21
K17DA9K mC2021 06 12.25315819 31 23.89 +54 38 24.3 21.76GVEL135V06
K17DA9K mC2021 06 12.25432719 31 24.05 +54 38 25.7 VEL135V06
K17DA9K mC2021 06 12.25549919 31 24.18 +54 38 28.1 VEL135V06
K17DA9K KC2021 06 12.30906319 31 28.63 +54 40 21.2 22.0 VuEL135H21
K17DA9K KC2021 06 12.32290419 31 30.06 +54 40 49.4 22.1 VuEL135H21
Observer details:
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.81-m f/4.0 astrograph + CCD.
V00 Kitt Peak-Bok. Observer H. Groeller. Measurers M. J. Brucker, E. J.
Christensen, C. E. Woodward, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. S.
McMillan, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W.
Wierzchos. 2.25-m reflector + CCD.
V06 Catalina Sky Survey-Kuiper. Observers R. A. Kowalski, D. C. Fuls.
Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.55-m
reflector + 1K CCD.
Z84 Calar Alto-Schmidt. Observers M. Micheli, D. Fohring. Measurers M.
Micheli, D. Fohring, D. Koschny, L. Conversi, E. Petrescu, E. Schwab.
0.8-m f/3 Schmidt + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
210610 V00 2.60+ 0.73+ 210612 H21 2.66+ 0.72+ MPO409592 +0.68 days
Orbital elements:
2017 DK109 Earth MOID = 0.0566 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Bell
M 160.57406 (2000.0) P Q
n 0.77221597 Peri. 186.08947 +0.98027239 +0.17706942
a 1.1766398 Node 162.93206 -0.16636212 +0.97908435
e 0.1910683 Incl. 17.41034 -0.10672249 +0.10020112
P 1.28 H 21.92 G 0.15 U 3
Residuals in seconds of arc
170222 F51 0.2+ 0.3- 170302 691 0.6- 0.2+ 210610 V06 0.1+ 0.0
170222 F51 0.1+ 0.1+ 170302 I52 0.7- 0.6- 210610 V06 0.2- 0.1+
170222 F51 0.6+ 0.1+ 170302 I52 0.4- 0.5- 210610 Z84 0.0 0.2+
170223 568 0.4+ 0.1+ 170302 I52 0.2- 0.1- 210610 Z84 0.3- 0.1+
170223 568 0.2+ 0.0 170306 807 0.2- 0.6- 210610 Z84 0.4- 0.3+
170223 568 0.2+ 0.0 170306 807 (0.2+ 0.9-) 210611 V06 0.0 0.1-
170223 474 0.1+ 0.1+ 170306 807 (0.6+ 0.9-) 210611 V06 0.1- 0.1+
170223 474 0.2- 0.3- 170318 H21 0.0 0.1+ 210611 V06 0.1- 0.0
170223 474 0.3+ 0.1- 170318 H21 0.2+ 0.0 210611 V06 0.2- 0.1-
170228 474 0.6- 0.4- 170318 H21 0.3+ 0.4+ 210611 H21 0.0 0.5+
170228 474 0.1+ 0.2- 170318 H21 0.0 0.3+ 210611 H21 0.1+ 0.3+
170228 474 0.1- 0.2- 170318 705 0.3+ 0.1- 210612 V06 0.3+ 0.6+
170228 474 0.0 0.3- 170318 705 0.1+ 0.0 210612 V06 0.6+ 0.5-
170301 K51 0.3+ 0.2+ 170318 705 0.0 0.0 210612 V06 0.6+ 0.6-
170301 K51 0.1+ 0.5+ 210610 V00 0.2- 0.0 210612 H21 0.1- 0.1+
170301 K51 0.2- 0.5+ 210610 V00 0.0 0.1- 210612 H21 0.3+ 0.1-
170302 691 0.1- 0.7+ 210610 V00 0.1+ 0.0
170302 691 0.1- 0.7+ 210610 V00 (0.8- 0.3+)
Ephemeris:
2017 DK109 a,e,i = 1.18, 0.19, 17 q = 0.9518
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 05 14 18 42 49.6 +36 24 59 0.4105 1.2002 107.6 53.4 22.3
...
2021 05 29 19 06 51.9 +46 11 15 0.3732 1.1548 102.8 58.9 22.2
...
2021 06 06 19 20 05.6 +51 01 50 0.3539 1.1302 99.8 62.2 22.1
...
2021 06 12 19 30 52.8 +54 29 43 0.3389 1.1117 97.5 64.9 22.1
2021 06 13 19 32 48.2 +55 03 36 0.3363 1.1086 97.1 65.4 22.1
2021 06 14 19 34 46.2 +55 37 17 0.3337 1.1055 96.7 65.8 22.1
...
2021 06 20 19 47 50.6 +58 55 51 0.3175 1.0873 94.3 68.7 22.0
...
2021 06 28 20 10 37.7 +63 15 15 0.2943 1.0636 91.1 72.9 21.9
...
2021 07 13 21 33 42.3 +71 10 00 0.2454 1.0226 84.5 81.7 21.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-L135
Read MPEC 2021-L134
Read MPEC 2021-L136
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)