MPEC 2021-D75 : 2021 DX1
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-D74
Read MPEC 2021-D76
M.P.E.C. 2021-D75 Issued 2021 February 21, 17:21 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
2021 DX1
Observations:
K21D01X* C2021 02 20.46915016 37 41.18 +68 39 35.1 17.80GVED075703
K21D01X C2021 02 20.47998716 36 56.76 +68 37 42.0 17.99GVED075703
K21D01X C2021 02 20.48540416 36 34.71 +68 36 45.2 17.68GVED075703
K21D01X mC2021 02 20.52921516 33 35.18 +68 28 47.1 17.63GVED075I52
K21D01X mC2021 02 20.52946116 33 34.17 +68 28 44.4 17.68GVED075I52
K21D01X mC2021 02 20.52970616 33 33.16 +68 28 41.6 17.87GVED075I52
K21D01X mC2021 02 20.52995216 33 32.16 +68 28 38.9 17.80GVED075I52
K21D01X mC2021 02 20.54259516 32 40.33 +68 26 15.3 18.92GVED075I52
K21D01X mC2021 02 20.54284116 32 39.35 +68 26 12.4 18.67GVED075I52
K21D01X mC2021 02 20.54487716 32 31.01 +68 25 48.9 18.46GVED075I52
K21D01X mC2021 02 20.54512316 32 30.00 +68 25 46.1 18.22GVED075I52
K21D01X KC2021 02 20.74468716 20 00.22 +67 37 05.0 17.1 RVED075K61
K21D01X KC2021 02 20.74531116 19 58.06 +67 36 57.1 17.3 RVED075K61
K21D01X KC2021 02 20.74594116 19 55.90 +67 36 48.9 17.4 RVED075K61
K21D01X KC2021 02 20.74703816 19 52.10 +67 36 34.9 16.8 RVED075K61
K21D01X KC2021 02 20.74774316 19 49.66 +67 36 25.6 16.7 RVED075K61
K21D01X KC2021 02 20.74993916 19 42.23 +67 35 56.8 16.5 RVED075K61
K21D01X KC2021 02 20.78935016 17 27.11 +67 27 27.4 18.0 GVED075G34
K21D01X KC2021 02 20.79296816 17 14.49 +67 26 41.5 17.5 GVED075G34
K21D01X KC2021 02 20.79658516 17 02.23 +67 25 55.3 18.2 GVED075G34
K21D01X KC2021 02 20.81550616 15 58.56 +67 21 33.3 17.6 GVED075104
K21D01X KC2021 02 20.81848816 15 48.40 +67 20 54.9 VED075104
K21D01X KC2021 02 20.82444416 15 28.20 +67 19 37.7 17.8 GVED075104
K21D01X KC2021 02 20.83781416 14 46.77 +67 16 48.2 19.1 GVED075L34
K21D01X KC2021 02 20.85122216 14 01.43 +67 13 56.7 18.3 GVED075L34
K21D01X KC2021 02 20.86951716 12 59.22 +67 10 03.3 17.3 GVED075L34
K21D01X KC2021 02 20.87651016 12 35.42 +67 08 34.3 15.9 GVED075L34
K21D01X C2021 02 20.88890 16 11 54.35 +67 07 30.7 17.4 RVED075D00
K21D01X C2021 02 20.88913 16 11 53.51 +67 07 27.5 17.3 RVED075D00
K21D01X C2021 02 20.88936 16 11 52.69 +67 07 24.5 17.2 RVED075D00
K21D01X KC2021 02 20.88943 16 11 43.89 +67 05 52.1 17.8 GVED075C43
K21D01X C2021 02 20.88959 16 11 51.87 +67 07 21.3 17.2 RVED075D00
K21D01X C2021 02 20.88983 16 11 51.13 +67 07 18.5 17.3 RVED075D00
K21D01X KC2021 02 20.89147 16 11 36.81 +67 05 25.8 17.8 GVED075C43
K21D01X KC2021 02 20.89351 16 11 29.77 +67 04 58.6 17.5 GVED075C43
K21D01X KC2021 02 20.89554 16 11 22.82 +67 04 31.7 17.5 GVED075C43
K21D01X KC2021 02 20.90311816 10 57.45 +67 02 49.8 16.6 RVED075K61
K21D01X KC2021 02 20.90452916 10 52.59 +67 02 31.4 16.6 RVED075K61
K21D01X KC2021 02 20.90632116 10 46.41 +67 02 08.0 16.5 RVED075K61
K21D01X KC2021 02 20.90749016 10 42.31 +67 01 53.5 16.7 RVED075K61
K21D01X KC2021 02 20.96214316 07 38.98 +66 50 06.7 18.9 GVED075L74
K21D01X KC2021 02 20.97374116 06 58.40 +66 47 34.5 18.6 GVED075L74
K21D01X KC2021 02 21.14722 15 56 44.37 +66 06 12.9 18.9 GVED075K74
K21D01X KC2021 02 21.15262 15 56 25.37 +66 04 51.2 18.0 GVED075K87
K21D01X KC2021 02 21.15339 15 56 22.61 +66 04 39.6 18.1 GVED075K74
K21D01X KC2021 02 21.15462 15 56 18.35 +66 04 20.8 18.4 GVED075K87
K21D01X KC2021 02 21.15662 15 56 11.23 +66 03 50.4 17.6 GVED075K87
K21D01X KC2021 02 21.15668 15 56 11.08 +66 03 49.7 17.5 GVED075K74
K21D01X KC2021 02 21.15900 15 56 02.93 +66 03 14.5 17.2 GVED075K74
K21D01X KC2021 02 21.35357915 45 49.70 +65 10 37.1 17.8 VuED075H21
K21D01X KC2021 02 21.35494015 45 45.25 +65 10 15.4 17.9 VuED075H21
K21D01X KC2021 02 21.35630115 45 40.68 +65 09 53.8 17.9 VuED075H21
K21D01X KC2021 02 21.35773115 45 35.96 +65 09 31.6 18.1 VuED075H21
K21D01X C2021 02 21.46202815 40 05.30 +64 40 58.5 17.16GVED075I52
K21D01X C2021 02 21.46215915 40 04.88 +64 40 56.5 17.03GVED075I52
K21D01X C2021 02 21.46229015 40 04.44 +64 40 54.4 17.09GVED075I52
K21D01X C2021 02 21.46242215 40 03.99 +64 40 52.2 17.08GVED075I52
K21D01X C2021 02 21.64061615 31 30.46 +63 45 28.6 17.3 VqED075900
K21D01X C2021 02 21.64675815 31 12.30 +63 43 45.4 18.5 VqED075900
K21D01X C2021 02 21.65289915 30 53.77 +63 42 02.3 18.1 VqED075900
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
703 Catalina Sky Survey. Observer H. Groeller. 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. 0.68-m Schmidt + 10K CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
C43 Hoyerswerda. Observer P. Lindner. 0.30-m f/6.3 Schmidt-Cassegrain + CCD.
D00 ASC-Kislovodsk Observatory. Observer V. Nevski. 1-m f/2.5 reflector +
CCD.
G34 Oberfrauendorf. Observer T. Felber. 0.35-m f/6.3 Schmidt-Cassegrain +
CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.76-m f/3.0
astrograph + 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.
K61 Rokycany Observatory. Observer M. Adamovsky. 0.51-m f/6.8 reflector +
CCD.
K74 Muensterschwarzach Observatory, Schwarzach. Observer C. Gerhard. 0.30-m
f/3.75 Newtonian reflector + CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.3-m f/8.0
Schmidt-Cassegrain + CCD.
L34 Galhassin Robotic Telescope, Isnello. Observer A. Nastasi. 0.40-m
reflector + CCD.
L74 AstroColauri, Naples. Observer G. Morra.
Orbital elements:
2021 DX1 Earth MOID = 0.0264 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 337.86859 (2000.0) P Q
n 0.56838511 Peri. 131.98322 -0.50340508 -0.86378060
a 1.4433586 Node 348.18603 +0.75828971 -0.42966748
e 0.3373368 Incl. 6.05510 +0.41422222 -0.26318992
P 1.73 H 22.9 G 0.15 U 6
Residuals in seconds of arc
210220 703 0.2+ 0.0 210220 104 0.7+ 0.0 210220 L74 0.9+ 0.3-
210220 703 0.4- 0.2- 210220 104 0.4+ 0.1+ 210220 L74 0.0 0.1+
210220 703 0.2+ 0.1+ 210220 104 0.4+ 0.1- 210221 K74 0.6+ 0.0
210220 I52 0.2+ 0.0 210220 L34 0.0 0.5+ 210221 K87 0.3+ 0.1+
210220 I52 0.2+ 0.1+ 210220 L34 0.7+ 0.0 210221 K74 0.2+ 0.1+
210220 I52 0.2+ 0.0 210220 L34 0.5+ 0.1+ 210221 K87 0.4+ 0.1+
210220 I52 0.2+ 0.1+ 210220 L34 0.6+ 0.3+ 210221 K87 0.2- 0.1+
210220 I52 0.1+ 0.2+ 210220 D00 0.6- 0.4- 210221 K74 0.4+ 0.2+
210220 I52 0.2+ 0.1+ 210220 D00 0.7- 0.6- 210221 K74 0.4+ 0.4+
210220 I52 0.2+ 0.0 210220 D00 0.8- 0.7- 210221 H21 0.0 0.2+
210220 I52 0.2+ 0.1+ 210220 C43 0.6+ 0.6+ 210221 H21 0.5+ 0.0
210220 K61 0.4- 0.1- 210220 D00 0.8- 1.0- 210221 H21 0.2+ 0.2-
210220 K61 0.5- 0.1+ 210220 D00 0.1- 0.7- 210221 H21 0.4+ 0.2+
210220 K61 0.5- 0.1+ 210220 C43 0.3+ 1.0+ 210221 I52 0.2- 0.2-
210220 K61 0.7- 0.3+ 210220 C43 0.2+ 0.4+ 210221 I52 0.1- 0.0
210220 K61 0.8- 0.2+ 210220 C43 0.5+ 0.0 210221 I52 0.2- 0.1+
210220 K61 0.2- 0.1- 210220 K61 0.5- 0.6- 210221 I52 0.3- 0.1+
210220 G34 0.5+ 0.8- 210220 K61 0.5- 0.6- 210221 900 0.4- 0.4-
210220 G34 0.8- 0.1+ 210220 K61 0.5- 0.5- 210221 900 0.6+ 0.2-
210220 G34 0.1- 0.8+ 210220 K61 1.0- 0.2+ 210221 900 0.8- 0.5+
Ephemeris:
2021 DX1 a,e,i = 1.44, 0.34, 6 q = 0.9565
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 01 22 23 18 08.5 +40 33 41 0.1215 0.9569 73.6 99.4 21.8
...
2021 02 06 22 54 16.1 +51 21 08 0.07117 0.9644 70.3 105.8 21.0
...
2021 02 14 21 45 31.9 +63 28 55 0.04550 0.9780 76.6 100.8 19.8
...
2021 02 20 17 08 32.1 +69 53 54 0.03076 0.9922 95.7 82.6 18.2
2021 02 21 16 04 52.0 +66 42 25 0.02927 0.9949 101.0 77.4 17.9
2021 02 22 15 14 23.8 +61 51 45 0.02819 0.9977 106.9 71.6 17.7
...
2021 02 28 13 09 25.7 +23 07 49 0.03216 1.0160 142.0 36.9 17.0
...
2021 03 08 12 28 01.6 -03 49 53 0.05536 1.0445 159.4 19.5 17.7
...
2021 03 23 12 02 33.1 -16 50 46 0.1152 1.1078 164.0 14.4 19.2
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-D75
Read MPEC 2021-D74
Read MPEC 2021-D76
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)