Asteroids

7025 1993QA help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.011

Aphelion (Q)

1.941

Eccentricity (e)

0.315

Inclination (i)

12.6

deg

Orbit period (P)

654.8

Earth MOID

0.06224

U parameter

0.0

Next Earth close approach

Date

2048-02-08

Nominal distance (from Earth center)

0.06276

9388341

Maximum Brightness

13.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.1

mag

Diameter

510

Taxonomic type

Rotation period (T)

2.506

Discovery Information

Discovery Date

1993-08-16

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

1.475788

1-sigma variation

1.118E-9

Unit

Eccentricity (e)

Value

0.315013

1-sigma variation

1.554E-8

Unit

Inclination (i)

Value

12.6103

1-sigma variation

2.974E-6

Unit

Long. of Ascending Node (Ω)

Value

146.5863

1-sigma variation

8.750E-6

Unit

Arg. of Perihelion (ω)

Value

323.4831

1-sigma variation

1.051E-5

Unit

Mean Anomaly (M)

Value

234.62072

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.010896

1-sigma variation

Unit

Aphelion distance

Value

1.940680

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.072244

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.767144

1-sigma variation

Unit

MOID

Value

0.062241

1-sigma variation

Unit

Orbit Period

Value

654.8390

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.24943E-18	-5.01575E-18	-4.88390E-16	5.73438E-16	7.10952E-15	-1.21270E-14
e	-5.01575E-18	2.41518E-16	7.59064E-15	2.78145E-14	-7.60193E-14	6.14597E-14
i	-4.88390E-16	7.59064E-15	8.84450E-12	3.82327E-12	-7.22765E-12	5.29036E-12
Ω	5.73438E-16	2.78145E-14	3.82327E-12	7.65626E-11	-6.34250E-11	-1.43776E-11
ω	7.10952E-15	-7.60193E-14	-7.22765E-12	-6.34250E-11	1.10455E-10	-6.72320E-11
M	-1.21270E-14	6.14597E-14	5.29036E-12	-1.43776E-11	-6.72320E-11	1.22336E-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

2.506

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

0.32

Unit

mag

Source

[3]

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

18.067

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.452

Unit

Source

[5]

Diameter

Value

510

Unit

Source

[5]

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

[6]

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]	EARN	1.) Pravec, P. et al. (1998) Icarus 136, 124-153. (Lightcurves of 26 Near-Earth Asteroids)(1943,2063,2100,3103,3122,3200, 3691,3752,4341,4957,5143,5587,7025,7341,7480,7482,7822,8034, 1989UQ,1992CC1,1992QN,1995FX,1997BR,1997GH3,1997GL3,1997SE5) 2.) Krugly, Yu.N. et al. (2002) Icarus 158, 294-304. (The Near-Earth Objects Follow-up Program. IV. CCD Photometry in 1996-1999).
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Mainzer, A. et al. (2014) Astrophys. J. 792, 30. (Initial Performance of the NEOWISE Reactivation Mission) (prel.diameters & albedos for 61 NEOs) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 3.) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)
[6]	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

10919

Unit

Source

[1]

Unobserved

Value

810

Unit

Source

[1]

Normalized RMS of residuals

Value

0.56825

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1993-08-16.21713

Unit

Source

[2]

Last Observation

Value

2023-07-09.323435

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

964 (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

1996-02-08

Unit

Source

[3]

Last Observation

Value

1996-02-10

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

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 7025 1993QA 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	1987-02-16 18:11	< 1 s	0.1582091	0.1582087	0.0000001
EARTH	1996-02-06 13:14	< 1 s	0.0708029	0.0708029	0.0000000
EARTH	2048-02-08 14:41	< 1 min	0.0627572	0.0627571	0.0000000
EARTH	2100-02-10 06:25	< 1 min	0.0648319	0.0648300	0.0000006
EARTH	2109-01-27 10:17	< 1 min	0.1667755	0.1667638	0.0000039

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
21.08733432	36.39787265	0.06255667	MINIMUM
175.68808066	185.44460385	0.94370122	SADDLE
358.24966509	185.98303852	2.02263087	SADDLE
181.55853874	9.68760220	2.91915372	MAXIMUM

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MOID Plots

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