Asteroids

162058 1997AE12 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.054

Aphelion (Q)

3.680

Eccentricity (e)

0.555

Inclination (i)

4.9

deg

Orbit period (P)

1330.3

Earth MOID

0.08710

U parameter

0.0

Next Earth close approach

Date

2054-08-26

Nominal distance (from Earth center)

0.17924

26813355

Maximum Brightness

16.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.9

mag

Diameter

850

Taxonomic type

Rotation period (T)

880

Discovery Information

Discovery Date

1997-01-10

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.367214

1-sigma variation

2.684E-9

Unit

Eccentricity (e)

Value

0.554547

1-sigma variation

2.056E-8

Unit

Inclination (i)

Value

4.8508

1-sigma variation

4.145E-6

Unit

Long. of Ascending Node (Ω)

Value

304.7530

1-sigma variation

3.067E-5

Unit

Arg. of Perihelion (ω)

Value

60.8973

1-sigma variation

3.240E-5

Unit

Mean Anomaly (M)

Value

82.81595

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.054483

1-sigma variation

Unit

Aphelion distance

Value

3.679945

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.275137

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.260531

1-sigma variation

Unit

MOID

Value

0.087098

1-sigma variation

Unit

Orbit Period

Value

1330.3157

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.20189E-18	7.80813E-18	7.49250E-16	4.29054E-17	-4.11595E-16	-9.93082E-15
e	7.80813E-18	4.22870E-16	-1.32387E-14	9.10187E-14	-1.14018E-13	-7.73910E-15
i	7.49250E-16	-1.32387E-14	1.71796E-11	6.02471E-11	-5.77549E-11	-3.72426E-13
Ω	4.29054E-17	9.10187E-14	6.02471E-11	9.40861E-10	-9.65275E-10	1.29043E-11
ω	-4.11595E-16	-1.14018E-13	-5.77549E-11	-9.65275E-10	1.05008E-9	-4.05789E-11
M	-9.93082E-15	-7.73910E-15	-3.72426E-13	1.29043E-11	-4.05789E-11	2.75096E-11

Date of computation: 2026-07-30 09:40 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

880

Unit

Source

[2]

Quality

Value

Unit

Source

[2]

Amplitude

Value

0.6

Unit

mag

Source

[2]

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

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.946

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.19

Unit

Source

[4]

Diameter

Value

850

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.) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)
[2]	EARN	1.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	EARN	1.) Nugent, C.R. et al. (2015) Astrophys. J. 814_117 (13pp) (NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos)(201 NEOs)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

12246

Unit

Source

[1]

Unobserved

Value

275

Unit

Source

[1]

Normalized RMS of residuals

Value

0.493245

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1992-07-28.4343

Unit

Source

[2]

Last Observation

Value

2026-02-06.746666

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

897 (8)

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

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Max residual (arcsec):

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Computation parameters

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Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 162058 1997AE12 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-08-20 20:32	< 1 min	0.1891761	0.1891747	0.0000005
EARTH	2003-08-30 13:50	< 1 s	0.1238186	0.1238184	0.0000001
EARTH	2054-08-26 11:07	< 1 min	0.1792362	0.1792350	0.0000004
MARS	2054-12-29 09:03	< 1 min	0.0376121	0.0376117	0.0000001
MARS	2061-10-15 01:14	< 1 min	0.0410685	0.0410674	0.0000004
EARTH	2094-10-11 05:21	< 1 min	0.1112290	0.1112283	0.0000002

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
353.58276412	250.03513021	0.08709752	MINIMUM
358.79771892	79.79757631	2.05039511	SADDLE
179.71552477	80.74775920	2.68626051	SADDLE
179.55800348	260.66194789	4.68046849	MAXIMUM

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MOID Plots

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