Asteroids

2017WK16 help

Last update: 2025-05-05 11:31 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.407

Aphelion (Q)

2.417

Eccentricity (e)

0.712

Inclination (i)

40.1

deg

Orbit period (P)

612.7

Earth MOID

0.01406

U parameter

9.0

Next Earth close approach

Date

2064-11-15

Nominal distance (from Earth center)

0.16434

24585084

Maximum Brightness

24.6

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-11-25

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

1.411763

1-sigma variation

0.012644

Unit

Eccentricity (e)

Value

0.711988

1-sigma variation

0.002805

Unit

Inclination (i)

Value

40.1300

1-sigma variation

0.2133

Unit

Long. of Ascending Node (Ω)

Value

240.1321

1-sigma variation

0.0058

Unit

Arg. of Perihelion (ω)

Value

63.9575

1-sigma variation

0.1540

Unit

Mean Anomaly (M)

Value

186.99340

1-sigma variation

22.17710

Unit

Perihelion distance

Value

0.406605

1-sigma variation

Unit

Aphelion distance

Value

2.416922

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.481670

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.025000

1-sigma variation

Unit

MOID

Value

0.014064

1-sigma variation

Unit

Orbit Period

Value

612.6905

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.59864E-4	3.54675E-5	2.69665E-3	-7.32936E-5	1.94746E-3	-2.80401E-1
e	3.54675E-5	7.86903E-6	5.98291E-4	-1.62591E-5	4.32037E-4	-6.22099E-2
i	2.69665E-3	5.98291E-4	4.54888E-2	-1.23624E-3	3.28491E-2	-4.72992E0
Ω	-7.32936E-5	-1.62591E-5	-1.23624E-3	3.36213E-5	-8.93102E-4	1.28557E-1
ω	1.94746E-3	4.32037E-4	3.28491E-2	-8.93102E-4	2.37272E-2	-3.41583E0
M	-2.80401E-1	-6.22099E-2	-4.72992E0	1.28557E-1	-3.41583E0	4.91823E2

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

26.12

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

16 - 40*

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

[-]

Download this part as:

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

2716

Unit

Source

[1]

Normalized RMS of residuals

Value

0.708259

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-11-25.20292

Unit

Source

[2]

Last Observation

Value

2017-11-27.22411

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (0)

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 2017WK16 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	1955-11-18 19:28	> 1 mo	0.0921852	0.0190346	3.8264584
EARTH	1960-11-23 22:54	> 1 mo	0.0684294	0.0191286	3.9159382
EARTH	2012-11-16 02:45	> 1 w	0.1491646	0.0138133	0.4075149
EARTH	2017-11-22 06:03	< 1 min	0.0201496	0.0198661	0.0000945
EARTH	2022-11-30 03:36	> 1 w	0.1998484	0.0106729	0.3955099
EARTH	2064-11-15 14:46	> 1 mo	0.1643411	0.0088663	3.7077784
EARTH	2069-11-22 18:58	> 1 mo	0.0265026	0.0101240	3.7253696
EARTH	2111-11-18 00:10	> 1 mo	0.1459379	0.0050022	17.6632369
EARTH	2116-11-25 04:57	> 1 mo	0.0640279	0.0058681	19.0557366

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
65.55592716	317.73382219	0.01406401	MINIMUM
313.80278030	114.27891614	0.39166954	MINIMUM
7.61897968	219.89319646	0.74206331	SADDLE
4.63385219	30.31286364	1.33105009	SADDLE
186.39532850	18.21663759	1.71843155	SADDLE
176.23218929	193.43397459	3.29999696	MAXIMUM

Download:

MOID Plots

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