Asteroids

2002GQ help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.480

Aphelion (Q)

1.057

Eccentricity (e)

0.375

Inclination (i)

10.6

deg

Orbit period (P)

246.0

Earth MOID

0.00338

U parameter

8.1

Next Earth close approach

Date

2029-05-16

Nominal distance (from Earth center)

0.16424

24570524

Maximum Brightness

25.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

12 - 28*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2002-04-01

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

0.768383

1-sigma variation

0.000164

Unit

Eccentricity (e)

Value

0.375280

1-sigma variation

0.000472

Unit

Inclination (i)

Value

10.6204

1-sigma variation

0.0224

Unit

Long. of Ascending Node (Ω)

Value

189.3751

1-sigma variation

0.0035

Unit

Arg. of Perihelion (ω)

Value

206.3782

1-sigma variation

0.0013

Unit

Mean Anomaly (M)

Value

166.28260

1-sigma variation

4.58957

Unit

Perihelion distance

Value

0.480025

1-sigma variation

Unit

Aphelion distance

Value

1.056742

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.005411

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.507081

1-sigma variation

Unit

MOID

Value

0.003383

1-sigma variation

Unit

Orbit Period

Value

246.0170

1-sigma variation

Unit

U parameter

Value

8.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.70043E-8	-7.75269E-8	-3.67366E-6	-5.72484E-7	2.06786E-7	-7.54203E-4
e	-7.75269E-8	2.22573E-7	1.05468E-5	1.64358E-6	-5.93598E-7	2.16525E-3
i	-3.67366E-6	1.05468E-5	4.99793E-4	7.78958E-5	-2.81305E-5	1.02601E-1
Ω	-5.72484E-7	1.64358E-6	7.78958E-5	1.21455E-5	-4.38613E-6	1.59889E-2
ω	2.06786E-7	-5.93598E-7	-2.81305E-5	-4.38613E-6	1.59286E-6	-5.77534E-3
M	-7.54203E-4	2.16525E-3	1.02601E-1	1.59889E-2	-5.77534E-3	2.10641E1

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

26.648

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

12 - 28*

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
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

8571

Unit

Source

[1]

Normalized RMS of residuals

Value

0.755983

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-04-01.26497

Unit

Source

[2]

Last Observation

Value

2002-04-08.22792

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

23 (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 2002GQ 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	1958-05-15 04:14	> 1 d	0.1651220	0.1312399	0.0219706
EARTH	1960-04-19 11:22	> 1 d	0.0985919	0.0841908	0.0048992
EARTH	1962-03-29 20:52	> 1 d	0.0175789	0.0012459	0.0233433
EARTH	1979-05-08 09:50	> 1 d	0.1379259	0.1217841	0.0153048
EARTH	1981-04-05 14:19	> 1 d	0.0480425	0.0048982	0.0335560
EARTH	1983-03-28 16:08	540.2	0.1163399	0.0052139	0.0430305
EARTH	1998-05-18 03:54	278.2	0.1982975	0.1799398	0.0065686
EARTH	2000-04-26 22:56	1336.4	0.1160075	0.1108957	0.0017861
EARTH	2002-03-31 03:30	< 1 min	0.0027982	0.0027834	0.0000049
EARTH	2004-03-27 17:28	10.8	0.1016894	0.0879252	0.0045886
EARTH	2029-05-16 06:28	> 1 d	0.1642438	0.1332615	0.0281214
EARTH	2031-05-03 03:05	> 1 w	0.1215067	0.1046272	0.0183704
EARTH	2033-04-12 06:51	> 1 w	0.0753122	0.0237410	0.0348539
EARTH	2035-03-30 23:25	> 1 d	0.0049148	0.0028370	0.0439239
EARTH	2037-03-29 08:55	> 1 d	0.1764200	0.0127291	0.2437809
EARTH	2052-05-18 19:36	> 1 mo	0.1821829	0.1391390	1.4805442
EARTH	2054-04-27 04:10	> 1 mo	0.1123775	0.0881868	0.9366231
EARTH	2056-03-30 17:32	> 1 mo	0.0042674	0.0031734	1.6715310
EARTH	2058-03-28 10:43	> 1 mo	0.1114241	0.0074522	11.0788379
EARTH	2081-05-16 10:18	> 1 mo	0.1518239	0.1295304	42.2598608
EARTH	2083-04-28 21:01	> 1 mo	0.1121991	0.0922553	31.5253936
EARTH	2085-04-06 18:03	> 1 mo	0.0531971	0.0056522	71.0610147
EARTH	2087-03-29 04:31	> 1 mo	0.0443013	0.0018634	93.9970068
EARTH	2089-03-29 05:15	> 1 mo	0.1689775	0.0069070	75.1867439
EARTH	2110-05-20 05:49	> 1 mo	0.1733776	0.1374941	112.9532061
EARTH	2112-05-06 09:43	> 1 mo	0.1238793	0.1122997	60.7544594
EARTH	2114-04-13 10:41	> 1 mo	0.0753365	0.0213930	143.7707792
EARTH	2116-03-30 11:04	> 1 mo	0.0183556	0.0039210	237.3101223
EARTH	2118-03-30 09:22	> 1 mo	0.1595530	0.0283336	6.4658760

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
142.56966541	86.85323825	0.00269953	MINIMUM
359.25293161	293.81671879	0.51630244	SADDLE
356.61062721	110.01127264	1.48501147	SADDLE
177.10207778	290.37532710	2.04896952	MAXIMUM

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MOID Plots

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