MPEC 2020-D135 : 2020 DF4
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M.P.E.C. 2020-D135 Issued 2020 February 29, 01:27 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
2020 DF4
Observations:
K20D04F* C2020 02 27.27925 10 10 58.46 +03 28 19.2 20.5 GVED135G96
K20D04F C2020 02 27.28432 10 11 01.01 +03 30 28.6 20.6 GVED135G96
K20D04F C2020 02 27.28937 10 11 03.61 +03 32 36.6 20.7 GVED135G96
K20D04F C2020 02 27.45325 10 12 28.59 +04 41 53.4 21.5 GVED135I52
K20D04F C2020 02 27.45472 10 12 29.39 +04 42 30.0 20.7 GVED135I52
K20D04F C2020 02 27.45619 10 12 30.11 +04 43 08.3 20.6 GVED135I52
K20D04F C2020 02 27.45766 10 12 30.88 +04 43 45.4 VED135I52
K20D04F KC2020 02 27.91196010 17 02.388+07 57 27.23 20.3 GVED135J04
K20D04F KC2020 02 27.91547810 17 04.282+07 58 57.07 20.7 GVED135J04
K20D04F KC2020 02 27.91907510 17 06.227+08 00 29.69 20.6 GVED135J04
K20D04F |C2020 02 28.14420 10 19 13.19 +09 39 04.8 20.5 VuED135807
K20D04F |C2020 02 28.15040 10 19 16.47 +09 41 44.2 19.7 VuED135807
K20D04F |C2020 02 28.15652 10 19 19.73 +09 44 21.3 20.4 VuED135807
K20D04F |C2020 02 28.16262 10 19 23.00 +09 46 57.8 20.1 VuED135807
K20D04F C2020 02 28.20987 10 19 53.54 +10 04 43.2 21.2 GVED135I52
K20D04F C2020 02 28.21237 10 19 54.89 +10 05 46.4 21.1 GVED135I52
K20D04F C2020 02 28.21487 10 19 56.25 +10 06 50.9 20.6 GVED135I52
K20D04F C2020 02 28.21736 10 19 57.60 +10 07 55.0 20.1 GVED135I52
K20D04F C2020 02 28.23019 10 20 04.60 +10 13 24.1 21.2 GVED135V00
K20D04F C2020 02 28.23661 10 20 08.02 +10 16 08.8 20.8 GVED135V00
K20D04F C2020 02 28.24940 10 20 14.93 +10 21 38.3 21.0 GVED135V00
K20D04F C2020 02 28.26889 10 20 25.28 +10 29 59.2 20.6 GVED135G96
K20D04F C2020 02 28.27028 10 20 26.04 +10 30 35.1 20.2 GVED135G96
K20D04F C2020 02 28.27167 10 20 26.77 +10 31 10.3 20.5 GVED135G96
K20D04F C2020 02 28.27306 10 20 27.54 +10 31 46.5 20.5 GVED135G96
K20D04F KC2020 02 28.91930310 26 51.55 +15 06 16.4 20.7 GVED135L01
K20D04F IC2020 02 28.92180910 26 52.96 +15 07 20.1 20.5 GVED135L01
K20D04F IC2020 02 28.92431610 26 54.34 +15 08 23.5 20.6 GVED135L01
K20D04F KC2020 02 28.92836010 26 56.60 +15 10 06.1 20.7 GVED135L01
K20D04F KC2020 02 28.94419 10 27 05.91 +15 16 50.6 20.2 GVED135K63
K20D04F KC2020 02 28.94771 10 27 07.90 +15 18 19.3 20.2 GVED135K63
K20D04F KC2020 02 28.95213 10 27 10.40 +15 20 11.3 20.3 GVED135K63
K20D04F KC2020 02 28.97212 10 27 21.44 +15 28 36.8 20.8 GVED135104
K20D04F KC2020 02 28.98256 10 27 27.39 +15 33 01.2 20.7 GVED135104
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers P.
Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes.
0.61-m f/6.5 astrograph + CCD.
G96 Mt. Lemmon Survey. Observer T. A. Pruyne. 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. 1.5-m reflector + 10K CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer G. J. Leonard.
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. 1.0-m
reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers M.
Micheli, D. Koschny, L. Conversi, M. Busch, A. Knofel, E. Schwab. 1.0-m
f/4.4 reflector + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.4-m
f/3.2 Newtonian reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, I. Lyon, G. Kervina.
Measurer K. Korlevic. 1.0-m f/2.9 reflector + CCD.
V00 Kitt Peak-Bok. Observers H. Groeller, J. V. Scotti. 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. 2.25-m reflector + CCD.
Orbital elements:
2020 DF4 Earth MOID = 0.0618 AU
Epoch 2020 May 31.0 TT = JDT 2459000.5 Alexandersen
M 54.82599 (2000.0) P Q
n 0.57650738 Peri. 357.59238 -0.91567163 -0.36946736
a 1.4297699 Node 158.49477 +0.37559845 -0.92673223
e 0.2641408 Incl. 25.57254 +0.14307786 +0.06827334
P 1.71 H 26.2 G 0.15 U 7
Residuals in seconds of arc
200227 G96 0.1+ 0.8- 200228 807 0.3- 0.2+ 200228 G96 0.3+ 0.2+
200227 G96 0.4- 0.2+ 200228 807 0.1+ 0.0 200228 L01 0.0 0.0
200227 G96 0.0 0.2+ 200228 I52 0.0 0.9+ 200228 L01 0.0 0.1+
200227 I52 0.6+ 0.2+ 200228 I52 0.0 0.2- 200228 L01 0.3- 0.1-
200227 I52 0.8+ 0.5- 200228 I52 0.1+ 0.1- 200228 L01 0.4- 0.1-
200227 I52 0.2- 0.5+ 200228 I52 0.2+ 0.0 200228 K63 0.0 0.6+
200227 I52 0.5- 0.2+ 200228 V00 (0.4- 1.8-) 200228 K63 0.3+ 0.1+
200227 J04 0.1- 0.4+ 200228 V00 (1.0- 2.1-) 200228 K63 0.7+ 0.1+
200227 J04 0.1- 0.2- 200228 V00 0.4- 1.3- 200228 104 0.8- 0.5-
200227 J04 0.1+ 0.1- 200228 G96 0.1- 0.1- 200228 104 0.7+ 0.1-
200228 807 0.1- 0.2+ 200228 G96 0.1+ 0.2+
200228 807 0.4- 0.3+ 200228 G96 0.1- 0.3-
Ephemeris:
2020 DF4 a,e,i = 1.43, 0.26, 26 q = 1.0521
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2020 01 30 08 06 38.5 -55 39 02 0.2421 1.0768 105.9 61.6 25.5
...
2020 02 14 08 45 17.4 -46 24 10 0.1321 1.0570 118.6 55.1 23.9
...
2020 02 22 09 28 16.1 -26 43 29 0.08046 1.0526 140.8 36.4 22.3
...
2020 02 28 10 17 46.7 +08 35 37 0.06214 1.0522 174.3 5.4 20.7
2020 02 29 10 27 38.1 +15 41 09 0.06249 1.0524 171.2 8.2 20.9
2020 03 01 10 37 54.8 +22 32 44 0.06391 1.0527 164.8 14.3 21.1
...
2020 03 07 11 45 44.3 +51 29 45 0.08956 1.0557 133.2 43.2 22.7
...
2020 03 15 13 12 23.7 +64 49 34 0.1437 1.0635 115.2 57.8 24.2
...
2020 03 30 14 41 35.1 +68 48 02 0.2537 1.0892 104.2 62.7 25.6
A. U. Tomatic (C) Copyright 2020 MPC M.P.E.C. 2020-D135
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