Asteroids

452376 2002AC5 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.891

Aphelion (Q)

2.629

Eccentricity (e)

0.494

Inclination (i)

16.5

deg

Orbit period (P)

852.8

Earth MOID

0.04812

U parameter

0.0

A₂

25.2

10^-15au/days²

Next Earth close approach

Date

2029-12-29

Nominal distance (from Earth center)

0.09649

14435278

Maximum Brightness

18.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

270 - 600*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2002-01-08

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.759891

1-sigma variation

3.028E-9

Unit

Eccentricity (e)

Value

0.493652

1-sigma variation

3.092E-8

Unit

Inclination (i)

Value

16.5462

1-sigma variation

1.376E-5

Unit

Long. of Ascending Node (Ω)

Value

82.3698

1-sigma variation

1.168E-5

Unit

Arg. of Perihelion (ω)

Value

331.7263

1-sigma variation

1.697E-5

Unit

Mean Anomaly (M)

Value

99.29594

1-sigma variation

4.256E-6

Unit

Perihelion distance

Value

0.891117

1-sigma variation

Unit

Aphelion distance

Value

2.628664

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.056784

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.337769

1-sigma variation

Unit

MOID

Value

0.048115

1-sigma variation

Unit

Orbit Period

Value

852.7602

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

25.24104

1-sigma variation

7.40603

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	9.16573E-18	2.46964E-17	-1.13191E-14	-1.28180E-14	1.57726E-14	-7.51221E-15	2.05346E-8
e	2.46964E-17	9.56331E-16	2.97875E-14	-3.00466E-14	-2.24342E-13	4.53834E-14	8.79374E-8
i	-1.13191E-14	2.97875E-14	1.89247E-10	1.56577E-10	-1.65208E-10	8.70569E-12	-1.01260E-5
Ω	-1.28180E-14	-3.00466E-14	1.56577E-10	1.36421E-10	-1.38377E-10	8.60966E-12	-1.85200E-5
ω	1.57726E-14	-2.24342E-13	-1.65208E-10	-1.38377E-10	2.88000E-10	-5.15376E-11	2.18041E-5
M	-7.51221E-15	4.53834E-14	8.70569E-12	8.60966E-12	-5.15376E-11	1.81139E-11	-1.44200E-5
A₂	2.05346E-8	8.79374E-8	-1.01260E-5	-1.85200E-5	2.18041E-5	-1.44200E-5	5.48492E1

Date of computation: 2025-09-10 00:30 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

19.971

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

270 - 600*

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]	Estimation	Estimated from absolute magnitude
[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

7730

Unit

Source

[1]

Unobserved

Value

967

Unit

Source

[1]

Normalized RMS of residuals

Value

0.656518

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-01-08.0747

Unit

Source

[2]

Last Observation

Value

2023-03-09.220816

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

132 (4)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-12-22

Unit

Source

[3]

Last Observation

Value

2015-12-26

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

4 (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 452376 2002AC5 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	2002-01-05 02:29	< 1 min	0.1714167	0.1714162	0.0000002
EARTH	2008-12-29 18:58	< 1 s	0.1061557	0.1061555	0.0000001
EARTH	2015-12-26 13:34	< 1 s	0.0721506	0.0721506	0.0000000
EARTH	2022-12-26 01:25	< 1 s	0.0704770	0.0704768	0.0000000
EARTH	2029-12-29 02:08	< 1 min	0.0964939	0.0964935	0.0000001
EARTH	2037-01-03 14:57	< 1 min	0.1565842	0.1565834	0.0000003

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
20.15048092	345.81704392	0.04826302	MINIMUM
177.32657334	131.07447287	1.63375373	SADDLE
356.48331750	127.80126265	1.89639468	SADDLE
180.49583287	312.89141583	3.61118419	MAXIMUM

Download:

MOID Plots

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