Asteroids

2015AA246 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.942

Aphelion (Q)

3.861

Eccentricity (e)

0.608

Inclination (i)

11.8

deg

Orbit period (P)

1359.4

Earth MOID

0.13470

U parameter

0.0

Next Earth close approach

Date

2060-02-06

Nominal distance (from Earth center)

0.19961

29861787

Maximum Brightness

18.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

300 - 800*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-01-15

Observatory

Pan-STARRS 1, Haleakala

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

2.401644

1-sigma variation

1.231E-8

Unit

Eccentricity (e)

Value

0.607650

1-sigma variation

6.914E-8

Unit

Inclination (i)

Value

11.7631

1-sigma variation

1.777E-5

Unit

Long. of Ascending Node (Ω)

Value

107.9083

1-sigma variation

3.781E-5

Unit

Arg. of Perihelion (ω)

Value

78.2808

1-sigma variation

3.980E-5

Unit

Mean Anomaly (M)

Value

299.16682

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.942285

1-sigma variation

Unit

Aphelion distance

Value

3.861004

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.364956

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.709829

1-sigma variation

Unit

MOID

Value

0.134701

1-sigma variation

Unit

Orbit Period

Value

1359.4443

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.51647E-16	3.60573E-16	1.58330E-14	-3.04238E-14	1.28359E-13	-1.39899E-13
e	3.60573E-16	4.78040E-15	-7.72997E-14	-3.38423E-14	5.50428E-13	-2.05542E-13
i	1.58330E-14	-7.72997E-14	3.15835E-10	-3.33671E-10	3.24787E-10	-2.43794E-11
Ω	-3.04238E-14	-3.38423E-14	-3.33671E-10	1.42927E-9	-1.40969E-9	4.04346E-11
ω	1.28359E-13	5.50428E-13	3.24787E-10	-1.40969E-9	1.58441E-9	-1.45200E-10
M	-1.39899E-13	-2.05542E-13	-2.43794E-11	4.04346E-11	-1.45200E-10	1.53348E-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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.419

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

300 - 800*

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.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

5671

Unit

Source

[1]

Unobserved

Value

2280

Unit

Source

[1]

Normalized RMS of residuals

Value

0.552135

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-12-21.367153

Unit

Source

[2]

Last Observation

Value

2019-07-01.53316

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

76 (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 2015AA246 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	2060-02-06 15:54	< 1 min	0.1996137	0.1996088	0.0000016

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.10372434	40.05599745	0.13471579	MINIMUM
23.40291677	129.33958406	0.18349779	MINIMUM
5.16395234	93.37322298	0.20650320	SADDLE
1.56556598	265.95123424	1.93335816	SADDLE
180.52541350	264.24233471	2.88578359	SADDLE
180.18806914	84.07148532	4.84232959	MAXIMUM

Download:

MOID Plots

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