Asteroids

455554 2004MQ1 help

Last update: 2025-03-28 15:40 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.710

Aphelion (Q)

4.104

Eccentricity (e)

0.705

Inclination (i)

11.1

deg

Orbit period (P)

1364.2

Earth MOID

0.12256

U parameter

0.0

Next Earth close approach

Date

2045-08-04

Nominal distance (from Earth center)

0.19513

29191498

Maximum Brightness

17.3

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

17.9

mag

Diameter

1090

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2004-06-17

Observatory

Siding Spring 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

2.407234

1-sigma variation

1.464E-8

Unit

Eccentricity (e)

Value

0.704976

1-sigma variation

3.823E-8

Unit

Inclination (i)

Value

11.1254

1-sigma variation

6.461E-6

Unit

Long. of Ascending Node (Ω)

Value

56.9633

1-sigma variation

4.322E-5

Unit

Arg. of Perihelion (ω)

Value

332.1084

1-sigma variation

4.210E-5

Unit

Mean Anomaly (M)

Value

188.59590

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.710193

1-sigma variation

Unit

Aphelion distance

Value

4.104275

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.242365

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.202036

1-sigma variation

Unit

MOID

Value

0.122558

1-sigma variation

Unit

Orbit Period

Value

1364.1930

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.14314E-16	4.00093E-16	-9.98920E-15	4.59426E-14	-1.47145E-13	-1.07095E-13
e	4.00093E-16	1.46134E-15	-1.97336E-14	6.51195E-13	-7.60684E-13	-2.52422E-13
i	-9.98920E-15	-1.97336E-14	4.17405E-11	1.48953E-10	-1.49083E-10	7.86554E-12
Ω	4.59426E-14	6.51195E-13	1.48953E-10	1.86797E-9	-1.78354E-9	-8.97860E-11
ω	-1.47145E-13	-7.60684E-13	-1.49083E-10	-1.78354E-9	1.77252E-9	1.28498E-10
M	-1.07095E-13	-2.52422E-13	7.86554E-12	-8.97860E-11	1.28498E-10	5.98947E-11

Date of computation: 2025-03-28 15:40 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

17.879

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.081

Unit

Source

[2]

Diameter

Value

1090

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

Radar R

Unit

Source

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5740

Unit

Source

[1]

Unobserved

Value

1895

Unit

Source

[1]

Normalized RMS of residuals

Value

0.505034

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2004-06-17.55

Unit

Source

[2]

Last Observation

Value

2020-03-05.28127

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

270 (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

2015-12-26

Unit

Source

[3]

Last Observation

Value

2015-12-27

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 455554 2004MQ1 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
VENUS	1997-04-22 15:48	< 1 min	0.0209766	0.0209755	0.0000004
EARTH	2004-08-02 12:19	< 1 min	0.1886344	0.1886341	0.0000001
EARTH	2016-01-02 12:59	< 1 s	0.1424338	0.1424336	0.0000001
1 Ceres	2027-09-07 18:45	< 1 min	0.0167000	0.0166985	0.0000005
EARTH	2045-08-04 10:40	< 1 min	0.1951331	0.1951325	0.0000002
VENUS	2075-06-19 18:33	< 1 min	0.0496728	0.0496663	0.0000022

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
30.24368223	352.45795194	0.12255842	MINIMUM
325.54158876	213.74661496	0.19226857	MINIMUM
354.71935123	276.02785863	0.30037500	SADDLE
358.14725346	104.16441674	1.71252321	SADDLE
179.49335171	106.85768719	3.10508724	SADDLE
179.95871651	287.05154948	5.09603727	MAXIMUM

Download:

MOID Plots

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