Asteroids

382758 2003GY help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.942

Aphelion (Q)

1.818

Eccentricity (e)

0.317

Inclination (i)

4.7

deg

Orbit period (P)

592.0

Earth MOID

0.02347

U parameter

0.0

Next Earth close approach

Date

2029-05-16

Nominal distance (from Earth center)

0.1807

27032427

Maximum Brightness

19.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.2

mag

Diameter

240 - 500*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2003-04-05

Observatory

Haleakala-AMOS

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

1.379802

1-sigma variation

1.511E-9

Unit

Eccentricity (e)

Value

0.317415

1-sigma variation

1.028E-8

Unit

Inclination (i)

Value

4.6748

1-sigma variation

3.638E-6

Unit

Long. of Ascending Node (Ω)

Value

321.7712

1-sigma variation

4.053E-5

Unit

Arg. of Perihelion (ω)

Value

334.2129

1-sigma variation

4.099E-5

Unit

Mean Anomaly (M)

Value

279.16226

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.941832

1-sigma variation

Unit

Aphelion distance

Value

1.817772

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.048872

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.749644

1-sigma variation

Unit

MOID

Value

0.023473

1-sigma variation

Unit

Orbit Period

Value

592.0024

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.28268E-18	-9.51917E-18	-6.27618E-16	-3.39205E-15	1.06545E-14	-1.52920E-14
e	-9.51917E-18	1.05749E-16	7.90671E-16	3.39800E-14	-9.41078E-14	8.04135E-14
i	-6.27618E-16	7.90671E-16	1.32344E-11	1.00957E-10	-1.00222E-10	3.45462E-13
Ω	-3.39205E-15	3.39800E-14	1.00957E-10	1.64289E-9	-1.63442E-9	1.10384E-12
ω	1.06545E-14	-9.41078E-14	-1.00222E-10	-1.63442E-9	1.68010E-9	-7.02696E-11
M	-1.52920E-14	8.04135E-14	3.45462E-13	1.10384E-12	-7.02696E-11	1.16670E-10

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

20.179

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

240 - 500*

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

7882

Unit

Source

[1]

Unobserved

Value

362

Unit

Source

[1]

Normalized RMS of residuals

Value

0.583125

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-04-05.34175

Unit

Source

[2]

Last Observation

Value

2024-11-02.120972

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

377 (11)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2003-08-17

Unit

Source

[3]

Last Observation

Value

2003-08-17

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

3 (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 382758 2003GY 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	1956-07-06 05:14	< 1 min	0.0855785	0.0855784	0.0000000
EARTH	1969-05-26 01:55	< 1 s	0.0973530	0.0973528	0.0000001
EARTH	1990-09-08 15:31	< 1 min	0.0671597	0.0671591	0.0000002
EARTH	2003-08-20 10:58	< 1 s	0.0424648	0.0424648	0.0000000
EARTH	2016-06-15 17:32	< 1 min	0.0792791	0.0792789	0.0000001
EARTH	2029-05-16 21:40	< 1 min	0.1807006	0.1807000	0.0000002
EARTH	2037-09-16 23:44	< 1 min	0.1625735	0.1625726	0.0000003
EARTH	2050-08-22 10:21	< 1 min	0.0385352	0.0385347	0.0000002
EARTH	2063-05-28 16:02	< 1 min	0.0903222	0.0903218	0.0000001
EARTH	2084-07-26 00:16	< 1 min	0.0783037	0.0783033	0.0000001
EARTH	2105-09-08 09:14	< 1 min	0.0541424	0.0541412	0.0000004
EARTH	2118-07-04 10:33	< 1 min	0.0841115	0.0841113	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
29.78639127	235.00716432	0.02279893	MINIMUM
331.02387467	153.90090214	0.07664933	MINIMUM
351.65538335	182.29373792	0.08483012	SADDLE
179.12273546	13.06189130	0.83507831	SADDLE
359.11785136	12.80068750	1.92590004	SADDLE
179.79579936	193.53748861	2.83319824	MAXIMUM

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MOID Plots

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