Asteroids

2005WC help

Last update: 2025-04-09 07:59 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.600

Aphelion (Q)

1.556

Eccentricity (e)

0.443

Inclination (i)

1.7

deg

Orbit period (P)

408.9

Earth MOID

0.01390

U parameter

8.1

Next Earth close approach

Date

2027-06-27

Nominal distance (from Earth center)

0.03201

4788977

Maximum Brightness

21.3

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

25.4

mag

Diameter

22 - 50*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2005-11-20

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.078079

1-sigma variation

0.000365

Unit

Eccentricity (e)

Value

0.443415

1-sigma variation

0.000835

Unit

Inclination (i)

Value

1.7386

1-sigma variation

0.0119

Unit

Long. of Ascending Node (Ω)

Value

31.6491

1-sigma variation

0.0843

Unit

Arg. of Perihelion (ω)

Value

133.6784

1-sigma variation

0.0524

Unit

Mean Anomaly (M)

Value

87.04214

1-sigma variation

4.71514

Unit

Perihelion distance

Value

0.600042

1-sigma variation

Unit

Aphelion distance

Value

1.556115

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.254617

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.342239

1-sigma variation

Unit

MOID

Value

0.013898

1-sigma variation

Unit

Orbit Period

Value

408.8595

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.33174E-7	-3.04465E-7	-4.21220E-6	-2.52025E-5	5.70143E-6	1.72070E-3
e	-3.04465E-7	6.96487E-7	9.57971E-6	5.67914E-5	-1.21686E-5	-3.93395E-3
i	-4.21220E-6	9.57971E-6	1.42029E-4	9.40594E-4	-3.28460E-4	-5.44172E-2
Ω	-2.52025E-5	5.67914E-5	9.40594E-4	7.10854E-3	-3.49492E-3	-3.25514E-1
ω	5.70143E-6	-1.21686E-5	-3.28460E-4	-3.49492E-3	2.74059E-3	7.35418E-2
M	1.72070E-3	-3.93395E-3	-5.44172E-2	-3.25514E-1	7.35418E-2	2.22326E1

Date of computation: 2025-04-09 07:59 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

25.374

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

22 - 50*

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
No.[1]	NameESA Aegis	AdditionalESA orbit determination and impact monitoring system
No.[2]	NameEstimation	AdditionalEstimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

0.9

Unit

Source

[1]

Unobserved

Value

7131

Unit

Source

[1]

Normalized RMS of residuals

Value

0.354383

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-11-20.26838

Unit

Source

[2]

Last Observation

Value

2005-11-21.150272

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

20 (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 2005WC 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	1958-11-24 15:16	> 1 d	0.1914326	0.0144148	0.0834678
EARTH	1961-06-30 17:40	> 1 d	0.1132241	0.0280099	0.0643803
EARTH	1967-11-14 21:24	1323.2	0.1639622	0.0842021	0.0266720
EARTH	1980-07-02 01:37	> 1 d	0.1458641	0.0285508	0.0705344
EARTH	1986-11-17 08:05	> 1 d	0.1053799	0.0137336	0.0927633
MARS	1988-07-11 10:37	> 1 d	0.0431312	0.0016093	0.0609956
EARTH	1989-06-20 20:11	302.6	0.1701843	0.0280344	0.0918253
EARTH	2005-11-21 10:16	< 1 min	0.0138779	0.0137701	0.0000359
EARTH	2008-06-23 12:04	701.1	0.0727195	0.0385597	0.0125004
EARTH	2024-11-23 22:36	> 1 d	0.0747845	0.0138397	0.0931839
EARTH	2027-06-27 13:46	> 1 d	0.0320123	0.0274116	0.0408994
MARS	2029-11-23 13:18	> 1 d	0.0041170	0.0034500	0.0277612
EARTH	2033-11-15 01:50	> 1 w	0.1624993	0.0174589	0.3141017
EARTH	2036-06-21 07:11	> 1 w	0.1955645	0.0292548	0.4435967
VENUS	2048-09-01 20:37	> 1 mo	0.0462969	0.0262783	0.5240614
EARTH	2052-11-24 19:59	> 1 w	0.0946599	0.0114854	0.3534536
VENUS	2055-03-29 17:54	> 1 w	0.0227250	0.0013638	0.2509957
EARTH	2055-06-28 16:36	> 1 w	0.0516824	0.0260138	0.1709762
EARTH	2061-11-18 18:57	> 1 mo	0.0797287	0.0131988	1.0476072
EARTH	2064-06-22 12:02	> 1 mo	0.1011514	0.0267659	1.2535683
VENUS	2074-04-22 21:10	> 1 mo	0.0072145	0.0011694	2.2997335
VENUS	2081-01-24 17:07	> 1 mo	0.0285043	0.0013148	81.1592993
MARS	2099-06-25 16:26	> 1 mo	0.0372245	0.0040339	138.5751586
VENUS	2100-05-07 09:41	> 1 mo	0.0462641	0.0262115	170.0071756
MARS	2105-02-19 13:16	> 1 mo	0.0407038	0.0042948	111.3142199
VENUS	2120-06-09 09:51	> 1 mo	0.0447509	0.0299290	0.1181018

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
280.78554948	317.48887765	0.01389759	MINIMUM
82.41812984	172.27590744	0.02756065	MINIMUM
2.72955738	66.08182526	0.39315458	SADDLE
181.00362514	244.27182407	0.54968937	SADDLE
2.87129298	246.28891763	1.60680744	SADDLE
181.10891044	64.32980210	2.54860671	MAXIMUM

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MOID Plots

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