Asteroids

2013FW13 help

Last update: 2025-05-21 08:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.716

Aphelion (Q)

1.527

Eccentricity (e)

0.362

Inclination (i)

23.4

deg

Orbit period (P)

433.7

Earth MOID

0.01216

U parameter

0.0

Next Earth close approach

Date

2026-03-27

Nominal distance (from Earth center)

0.1717

25685768

Maximum Brightness

21.3

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

21.7

mag

Diameter

120 - 270*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-03-23

Observatory

Catalina Sky 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

1.121337

1-sigma variation

4.290E-9

Unit

Eccentricity (e)

Value

0.361820

1-sigma variation

5.746E-8

Unit

Inclination (i)

Value

23.4164

1-sigma variation

3.355E-6

Unit

Long. of Ascending Node (Ω)

Value

175.8008

1-sigma variation

2.074E-6

Unit

Arg. of Perihelion (ω)

Value

272.1769

1-sigma variation

6.716E-6

Unit

Mean Anomaly (M)

Value

137.40479

1-sigma variation

2.430E-6

Unit

Perihelion distance

Value

0.715614

1-sigma variation

Unit

Aphelion distance

Value

1.527059

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.033801

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.016208

1-sigma variation

Unit

MOID

Value

0.012160

1-sigma variation

Unit

Orbit Period

Value

433.7130

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.84075E-17	-2.27630E-16	1.31968E-14	-5.88367E-15	-2.09511E-14	-8.08236E-15
e	-2.27630E-16	3.30130E-15	-1.81217E-13	6.34150E-14	3.39544E-13	9.04351E-14
i	1.31968E-14	-1.81217E-13	1.12566E-11	-4.84075E-12	-1.61668E-11	-6.39548E-12
Ω	-5.88367E-15	6.34150E-14	-4.84075E-12	4.30186E-12	9.30806E-13	4.96983E-12
ω	-2.09511E-14	3.39544E-13	-1.61668E-11	9.30806E-13	4.51033E-11	3.47478E-12
M	-8.08236E-15	9.04351E-14	-6.39548E-12	4.96983E-12	3.47478E-12	5.90327E-12

Date of computation: 2025-05-21 08:47 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

21.734

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

120 - 270*

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

4199

Unit

Source

[1]

Unobserved

Value

255

Unit

Source

[1]

Normalized RMS of residuals

Value

0.489306

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-03-23.47435

Unit

Source

[2]

Last Observation

Value

2024-09-17.813324

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

146 (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

2024-09-16

Unit

Source

[3]

Last Observation

Value

2024-09-20

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

7 (0)

Unit

Source

[1]

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
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2013FW13 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	1960-09-11 17:24	< 1 min	0.1231788	0.1231774	0.0000005
EARTH	1962-03-19 08:03	< 1 min	0.0272416	0.0272413	0.0000001
EARTH	1973-09-21 22:09	< 1 s	0.0985841	0.0985834	0.0000002
EARTH	1992-09-12 17:33	< 1 min	0.1036351	0.1036326	0.0000008
EARTH	1994-03-20 12:51	< 1 min	0.0409025	0.0409009	0.0000005
EARTH	2005-09-25 04:24	< 1 min	0.1714412	0.1714394	0.0000006
EARTH	2013-03-13 02:24	< 1 s	0.1183353	0.1183348	0.0000002
EARTH	2024-09-18 06:28	< 1 s	0.0217211	0.0217211	0.0000000
EARTH	2026-03-27 02:26	< 1 s	0.1716988	0.1716979	0.0000003
EARTH	2043-09-19 00:45	< 1 min	0.0207683	0.0207669	0.0000005
EARTH	2045-03-27 08:15	< 1 min	0.1842937	0.1842916	0.0000007
EARTH	2051-03-11 17:44	< 1 min	0.1524944	0.1524935	0.0000003
EARTH	2062-09-25 14:58	< 1 min	0.1737196	0.1737175	0.0000007
EARTH	2068-09-10 10:28	< 1 min	0.1587679	0.1587647	0.0000011
EARTH	2070-03-19 04:57	< 1 min	0.0252594	0.0252587	0.0000002
EARTH	2087-09-19 18:24	< 1 min	0.0331526	0.0331316	0.0000070
EARTH	2095-03-15 10:37	< 1 min	0.0809976	0.0809948	0.0000009
EARTH	2112-09-19 14:17	< 1 min	0.0237850	0.0237497	0.0000118
EARTH	2120-03-17 09:14	< 1 min	0.0483137	0.0483054	0.0000028

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
288.06329667	253.39988681	0.01216015	MINIMUM
69.04296995	74.89097207	0.02571705	MINIMUM
358.44796425	343.86012794	0.43371757	SADDLE
178.71765452	164.80609531	0.71874228	SADDLE
358.85114646	164.49871779	1.69647051	SADDLE
179.97964117	345.76342814	2.46150214	MAXIMUM

Download:

MOID Plots

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