Asteroids

2016DK1 help

Last update: 2025-03-29 00:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.912

Aphelion (Q)

1.814

Eccentricity (e)

0.331

Inclination (i)

0.8

deg

Orbit period (P)

581.2

Earth MOID

0.00013

U parameter

9.0

Next Earth close approach

Date

2051-02-19

Nominal distance (from Earth center)

0.01054

1576188

Maximum Brightness

19.3

mag

Risk

Object is in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.4

mag

Diameter

9 - 20*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2016-02-27

Observatory

Mt. Lemmon Survey

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.362902

1-sigma variation

0.007459

Unit

Eccentricity (e)

Value

0.330932

1-sigma variation

0.002608

Unit

Inclination (i)

Value

0.7560

1-sigma variation

0.0067

Unit

Long. of Ascending Node (Ω)

Value

328.8569

1-sigma variation

3.3473

Unit

Arg. of Perihelion (ω)

Value

133.1467

1-sigma variation

3.9611

Unit

Mean Anomaly (M)

Value

307.02933

1-sigma variation

2.86002

Unit

Perihelion distance

Value

0.911874

1-sigma variation

Unit

Aphelion distance

Value

1.813930

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.555661

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001797

1-sigma variation

Unit

MOID

Value

0.000128

1-sigma variation

Unit

Orbit Period

Value

581.1595

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.56296E-5	1.94523E-5	5.03262E-5	2.49657E-2	-2.95438E-2	-2.13316E-2
e	1.94523E-5	6.80201E-6	1.75978E-5	8.72989E-3	-1.03307E-2	-7.45913E-3
i	5.03262E-5	1.75978E-5	4.55283E-5	2.25856E-2	-2.67272E-2	-1.92979E-2
Ω	2.49657E-2	8.72989E-3	2.25856E-2	1.12042E1	-1.32588E1	-9.57327E0
ω	-2.95438E-2	-1.03307E-2	-2.67272E-2	-1.32588E1	1.56901E1	1.13288E1
M	-2.13316E-2	-7.45913E-3	-1.92979E-2	-9.57327E0	1.13288E1	8.17974E0

Date of computation: 2025-03-29 00:36 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

27.384

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

9 - 20*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

3341

Unit

Source

[1]

Normalized RMS of residuals

Value

0.554192

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2016-02-27.16982

Unit

Source

[2]

Last Observation

Value

2016-03-16.495854

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

74 (3)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2016DK1 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1955-12-27 17:23	> 1 w	0.0730431	0.0687029	0.0014582
EARTH	1967-02-27 00:38	> 1 d	0.0734789	0.0013224	0.0591151
EARTH	1985-11-24 12:18	> 1 w	0.0327504	0.0129324	0.0185868
EARTH	2004-11-08 17:38	> 1 d	0.0584896	0.0128663	0.0237106
EARTH	2016-02-20 17:16	< 1 min	0.0157943	0.0157692	0.0000084
EARTH	2023-11-19 02:08	> 1 d	0.0133207	0.0130005	0.0034348
EARTH	2051-02-19 18:55	> 1 mo	0.0105362	0.0000449	1.1226218
EARTH	2079-11-08 07:01	> 1 mo	0.1022112	0.0131799	158.4059401
EARTH	2087-12-15 04:47	> 1 mo	0.0597368	0.0164180	43.2288264
EARTH	2096-02-22 22:14	> 1 mo	0.0276105	0.0002112	20.7926090
EARTH	2117-01-07 20:11	> 1 mo	0.0689765	0.0475218	2.2054127

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
33.90432107	45.62324287	0.00012815	MINIMUM
326.08441765	313.90466934	0.01307736	MINIMUM
359.77700797	359.46616409	0.07235864	SADDLE
179.97527855	179.75142591	0.79773103	SADDLE
359.97930354	179.74665201	1.92815923	SADDLE
179.99918761	359.76860095	2.79754303	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2016DK1

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE/σ	IP	Exp. energy	PS
2043-02-18.095	67298.095	-0.284	0.000	0.15 ± 0.001	1.51E4	9.68E-5	3.83E-6	-4.88
2047-02-17.897	68758.897	-0.285	0.000	0.08 ± 0.155	3.48E8	4.19E-9	1.65E-10	-9.33
2051-02-17.829	70219.829	-0.012	0.000	1.58 ± 0.001	2.59E4	3.32E-5	1.31E-6	-5.50
2051-02-18.066	70220.066	-0.269	0.000	1.44 ± 0.001	4.90E5	2.87E-6	1.13E-7	-6.56
2054-02-17.788	71315.788	-0.294	0.000	0.25 ± 0.003	2.70E6	5.35E-7	2.12E-8	-7.34
2060-02-18.338	73507.338	-0.288	0.000	0.76 ± 0.006	1.61E7	8.34E-8	3.30E-9	-8.23
2062-02-17.587	74237.587	-0.018	0.000	0.75 ± 0.001	3.05E6	4.64E-7	1.83E-8	-7.51
2062-02-17.827	74237.827	-0.269	0.000	1.34 ± 0.045	1.06E8	1.00E-8	3.97E-10	-9.17
2062-02-18.068	74238.068	-0.333	0.000	1.10 ± 0.001	6.14E4	1.95E-5	7.71E-7	-5.88
2062-02-18.143	74238.143	-0.438	0.000	0.93 ± 0.001	1.36E4	8.89E-5	3.52E-6	-5.22
2064-02-18.361	74968.361	-0.437	0.000	1.71 ± 0.000	6.77E7	9.32E-9	3.68E-10	-9.22
2070-02-17.615	77159.615	-0.028	0.000	0.65 ± 0.001	6.56E5	2.19E-6	8.65E-8	-6.92
2070-02-17.900	77159.900	-0.609	0.000	1.50 ± 0.001	7.78E5	1.01E-6	3.99E-8	-7.26
2070-02-17.974	77159.974	-0.338	0.000	1.86 ± 0.001	1.65E6	7.52E-7	2.98E-8	-7.38
2070-02-18.018	77160.018	-0.418	0.000	0.67 ± 0.001	4.65E5	2.81E-6	1.11E-7	-6.81
2073-02-17.746	78255.746	-0.589	3.062	1.91 ± 0.001	1.45E6	1.48E-11	5.85E-13	-12.12
2073-02-17.848	78255.848	-0.456	0.000	1.46 ± 0.001	6.88E5	1.87E-6	7.38E-8	-7.02
2078-02-17.606	80081.606	0.008	0.000	0.97 ± 0.011	2.46E7	5.34E-8	2.11E-9	-8.60
2078-02-18.114	80082.114	-0.440	0.000	1.15 ± 0.000	9.50E7	1.46E-8	5.76E-10	-9.16
2086-02-17.930	83003.930	0.147	0.000	1.13 ± 0.001	4.05E4	3.03E-5	1.20E-6	-5.90
2089-02-17.494	84099.494	-0.121	0.000	1.91 ± 0.001	9.63E5	9.21E-8	3.64E-9	-8.44
2094-02-17.878	85925.878	0.138	0.000	0.21 ± 0.004	2.09E5	7.20E-6	2.85E-7	-6.58
2097-02-17.648	87021.648	0.152	0.000	1.01 ± 0.001	3.25E6	4.01E-7	1.59E-8	-7.85
2097-02-17.766	87021.766	-3.483	1.552	1.91 ± 0.001	5.85E4	7.66E-11	3.01E-12	-11.57
2101-02-19.424	88483.424	-2.158	0.000	0.73 ± 0.001	7.48E5	1.84E-7	7.26E-9	-8.21
2104-02-19.464	89578.464	0.232	0.000	1.13 ± 0.000	2.47E6	5.61E-7	2.22E-8	-7.74
2104-02-19.694	89578.694	0.997	0.000	1.54 ± 0.005	2.12E5	4.16E-6	1.65E-7	-6.87
2105-02-18.658	89943.658	0.161	0.000	1.45 ± 0.001	5.65E5	1.73E-6	6.85E-8	-7.26
2106-02-20.248	90310.248	-0.872	0.000	1.91 ± 0.003	2.62E6	2.16E-8	8.52E-10	-9.17
2111-02-18.818	92134.818	0.203	0.000	1.05 ± 0.001	3.06E6	4.08E-7	1.61E-8	-7.92
2112-02-19.311	92500.311	0.253	0.000	0.19 ± 0.001	5.87E6	2.51E-7	9.90E-9	-8.13
2112-02-19.334	92500.334	0.232	0.000	0.62 ± 0.008	1.56E7	9.00E-8	3.56E-9	-8.58
2112-02-20.387	92501.387	-0.921	0.000	0.67 ± 0.003	8.70E5	1.08E-6	4.24E-8	-7.50
2112-02-20.567	92501.567	-0.888	0.000	0.31 ± 0.007	5.43E5	1.90E-6	7.47E-8	-7.26
2113-02-18.991	92865.991	1.883	0.000	1.55 ± 0.002	3.41E4	4.65E-6	1.84E-7	-6.87
2113-02-19.228	92866.228	-2.715	0.000	1.67 ± 0.002	2.22E5	8.78E-8	3.45E-9	-8.60
2113-02-19.825	92866.825	-0.882	0.000	1.50 ± 0.000	2.14E7	4.55E-8	1.80E-9	-8.88
2117-02-20.059	94328.059	-1.124	0.000	0.65 ± 0.006	5.86E6	1.30E-7	5.14E-9	-8.44
2118-02-18.662	94691.662	0.274	0.000	1.84 ± 0.001	1.04E5	4.00E-6	1.58E-7	-6.96
2118-02-18.704	94691.704	0.287	0.000	0.93 ± 0.001	6.27E4	2.07E-5	8.17E-7	-6.25
2118-02-19.744	94692.744	-2.158	0.000	0.55 ± 0.008	3.52E7	4.05E-9	1.59E-10	-9.96
2119-02-19.102	95057.102	0.427	0.000	1.20 ± 0.003	5.13E6	2.43E-7	9.63E-9	-8.18
2120-02-19.156	95422.156	0.236	0.000	1.57 ± 0.001	5.38E6	2.47E-7	9.77E-9	-8.18
2120-02-19.171	95422.171	0.480	0.000	1.36 ± 0.000	2.82E7	3.41E-8	1.35E-9	-9.04
2120-02-19.596	95422.596	-2.027	0.000	1.05 ± 0.000	1.14E6	1.63E-7	6.42E-9	-8.36


Based on 74 optical observations (of which 3 are rejected as outliers) from 2016/02/27.170 to 2016/03/16.496.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.91 and 1.91 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250305 085955.880 UTC.

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