Asteroids

2003AY2 help

Last update: 2025-05-14 23:55 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.796

Aphelion (Q)

2.850

Eccentricity (e)

0.563

Inclination (i)

10.3

deg

Orbit period (P)

899.4

Earth MOID

0.02211

U parameter

0.4

Next Earth close approach

Date

2025-06-22

Nominal distance (from Earth center)

0.0363

5429674

Maximum Brightness

15.1

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

19.7

mag

Diameter

300 - 700*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2003-01-02

Observatory

Lowell Observatory-LONEOS

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

1.823441

1-sigma variation

1.002E-8

Unit

Eccentricity (e)

Value

0.563229

1-sigma variation

1.449E-7

Unit

Inclination (i)

Value

10.3296

1-sigma variation

1.523E-5

Unit

Long. of Ascending Node (Ω)

Value

274.8623

1-sigma variation

3.475E-5

Unit

Arg. of Perihelion (ω)

Value

286.1069

1-sigma variation

4.863E-5

Unit

Mean Anomaly (M)

Value

359.54241

1-sigma variation

0.00005

Unit

Perihelion distance

Value

0.796426

1-sigma variation

Unit

Aphelion distance

Value

2.850456

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.060802

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.491376

1-sigma variation

Unit

MOID

Value

0.022106

1-sigma variation

Unit

Orbit Period

Value

899.3649

1-sigma variation

Unit

U parameter

Value

0.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.00466E-16	-8.27635E-16	4.74224E-14	-6.94429E-14	3.28295E-13	-5.06517E-13
e	-8.27635E-16	2.09943E-14	-5.67025E-13	1.00119E-12	-2.75559E-12	5.39053E-12
i	4.74224E-14	-5.67025E-13	2.31942E-10	8.65314E-11	5.49958E-11	-2.76221E-10
Ω	-6.94429E-14	1.00119E-12	8.65314E-11	1.20787E-9	-1.37212E-9	3.85634E-10
ω	3.28295E-13	-2.75559E-12	5.49958E-11	-1.37212E-9	2.36509E-9	-1.73625E-9
M	-5.06517E-13	5.39053E-12	-2.76221E-10	3.85634E-10	-1.73625E-9	2.71480E-9

Date of computation: 2025-05-14 23:55 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.747

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

300 - 700*

Unit

Source

[4]

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]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8137

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.606668

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-12-10.52209

Unit

Source

[2]

Last Observation

Value

2025-03-21.13937

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

116 (2)

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 2003AY2 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	1966-06-14 14:55	1.3	0.0675550	0.0675310	0.0000080
EARTH	1993-07-01 00:29	< 1 min	0.1661293	0.1661212	0.0000027
MARS	2000-06-09 12:58	< 1 min	0.0043876	0.0043860	0.0000005
EARTH	2003-01-28 15:49	< 1 min	0.1446851	0.1446844	0.0000002
EARTH	2025-06-22 04:08	< 1 min	0.0362951	0.0362900	0.0000017
EARTH	2035-01-30 19:19	< 1 min	0.1322153	0.1322136	0.0000006
EARTH	2062-05-31 18:18	1.2	0.1597736	0.1597621	0.0000038
EARTH	2067-02-18 07:50	1.1	0.1839724	0.1839602	0.0000041
EARTH	2094-06-18 23:53	< 1 min	0.0276095	0.0275936	0.0000053

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
38.90100881	166.10963292	0.02210580	MINIMUM
321.80591126	31.34636359	0.11860146	MINIMUM
358.68351009	95.27002502	0.25762635	SADDLE
1.25510323	280.22265884	1.78699388	SADDLE
180.07510739	279.35429377	1.87600374	SADDLE
180.67370151	99.67657768	3.84186337	MAXIMUM

Download:

MOID Plots

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