Asteroids

2014AA

Last update: 2023-03-30 23:53 UTC

Orbital Properties

Epoch

56658.3

MJD

Orbit type

Apollo

Perihelion (q)

0.915

Aphelion (Q)

1.417

Eccentricity (e)

0.215

Inclination (i)

1.4

deg

Orbit period (P)

460.1

Earth MOID

5.910E-7

U parameter

9.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object impacted Earth on 2014-01-02 02:30:00

Physical Properties

Absolute Magnitude (H)

30.9

mag

Diameter

2.3*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2014-01-01

Observatory

Mt. Lemmon Survey

Orbit Visualiser

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External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion
Aphelion
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

56658.2935

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.166349

1-sigma variation

0.020688

Unit

Eccentricity (e)

Value

0.215128

1-sigma variation

0.020081

Unit

Inclination (i)

Value

1.4384

1-sigma variation

0.1379

Unit

Ascending Node (Ω)

Value

101.5684

1-sigma variation

0.0909

Unit

Arg. of Perihelion (ω)

Value

52.3430

1-sigma variation

0.9057

Unit

Mean Anomaly (M)

Value

324.56771

1-sigma variation

0.98589

Unit

Perihelion

Value

0.915435

1-sigma variation

Unit

Aphelion

Value

1.417263

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.000004

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.261740

1-sigma variation

Unit

MOID

Value

0.000001

1-sigma variation

Unit

Orbit Period

Value

460.0884

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.27977E-4	4.14834E-4	2.84464E-3	-1.11384E-3	1.68066E-2	1.96267E-2
e	4.14834E-4	4.03264E-4	2.76801E-3	-1.00047E-3	1.67235E-2	1.87340E-2
i	2.84464E-3	2.76801E-3	1.90062E-2	-6.67753E-3	1.15680E-1	1.27794E-1
Ω	-1.11384E-3	-1.00047E-3	-6.67753E-3	8.26040E-3	-1.44248E-2	-7.07147E-2
ω	1.68066E-2	1.67235E-2	1.15680E-1	-1.44248E-2	8.20325E-1	6.63361E-1
M	1.96267E-2	1.87340E-2	1.27794E-1	-7.07147E-2	6.63361E-1	9.71983E-1

Date of computation: 2022-07-05 09:19 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

30.945

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

Unit

Source

[-]

Diameter

Value

2.3*

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

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved

Arc Information

Value

Unit

Source

Arc Length

Value

4.824E-2

Unit

Source

[1]

Unobserved

Value

3376

Unit

Source

[1]

Astrometry Summary

RMS of Residuals
First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

RMS of Residuals

Value

0.127755

Unit

arcsec

Source

[1]

First Observation

Value

2014-01-01.26257

Unit

Source

[2]

Last Observation

Value

2014-01-01.31081

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

7 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	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 2014AA from 1950 to 2123

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	1953-01-14 02:54	> 1 mo	0.0388284	0.0006674	0.1599890
EARTH	1957-12-25 10:08	> 1 mo	0.0674511	0.0020890	3.0121436
MARS	1984-11-08 22:49	> 1 mo	0.0221473	0.0033876	0.3375257
EARTH	1989-05-09 23:19	> 1 mo	0.1612409	0.0222902	2.2575635
EARTH	1994-04-28 05:25	> 1 mo	0.0272630	0.0224098	0.6709146
EARTH	1999-04-20 17:14	> 1 mo	0.0311538	0.0222547	0.5917604
EARTH	2004-03-12 01:09	> 1 mo	0.0719741	0.0400292	0.2077436
EARTH	2009-01-26 10:31	> 1 mo	0.0562181	0.0070321	0.4789565
EARTH	2014-01-02 02:31	104.4	0.0000041	0.0000000	0.0000042

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