Asteroids

2015AZ43 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.987

Aphelion (Q)

2.759

Eccentricity (e)

0.473

Inclination (i)

4.5

deg

Orbit period (P)

936.1

Earth MOID

0.00286

U parameter

5.3

Next Earth close approach

Date

2056-03-10

Nominal distance (from Earth center)

0.01843

2756777

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.6

mag

Diameter

50 - 120*

Taxonomic type

Rotation period (T)

0.5999

Discovery Information

Discovery Date

2015-01-11

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.872725

1-sigma variation

0.000033

Unit

Eccentricity (e)

Value

0.473090

1-sigma variation

0.000009

Unit

Inclination (i)

Value

4.5208

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

337.3502

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

181.9592

1-sigma variation

4.223E-5

Unit

Mean Anomaly (M)

Value

144.59547

1-sigma variation

0.04212

Unit

Perihelion distance

Value

0.986758

1-sigma variation

Unit

Aphelion distance

Value

2.758692

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

1.747184

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.003006

1-sigma variation

Unit

MOID

Value

0.002858

1-sigma variation

Unit

Orbit Period

Value

936.0722

1-sigma variation

Unit

U parameter

Value

5.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.08473E-9	3.08348E-10	2.10543E-9	1.68609E-9	1.29323E-9	-1.38707E-6
e	3.08348E-10	8.76522E-11	5.98503E-10	4.79267E-10	3.67702E-10	-3.94293E-7
i	2.10543E-9	5.98503E-10	4.09467E-9	3.24968E-9	2.54187E-9	-2.69227E-6
Ω	1.68609E-9	4.79267E-10	3.24968E-9	2.73558E-9	1.86991E-9	-2.15604E-6
ω	1.29323E-9	3.67702E-10	2.54187E-9	1.86991E-9	1.78356E-9	-1.65371E-6
M	-1.38707E-6	-3.94293E-7	-2.69227E-6	-2.15604E-6	-1.65371E-6	1.77368E-3

Date of computation: 2026-07-30 14:25 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

0.5999

Unit

Source

[4]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.58

Unit

mag

Source

[4]

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]

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

23.552

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[6]

Diameter

Value

50 - 120*

Unit

Source

[6]

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

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	1.) Maxime Devogèle et al 2019 AJ 158 196
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Warner, B.D. (2015) MPB 42, 172-183. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JANUARY - MARCH)(35NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	Estimation	Estimated from absolute magnitude
[7]	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

Unit

Source

[1]

Unobserved

Value

4223

Unit

Source

[1]

Normalized RMS of residuals

Value

0.466818

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-01-11.38949

Unit

Source

[2]

Last Observation

Value

2015-02-25.642543

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

202 (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

2015-02-19

Unit

Source

[3]

Last Observation

Value

2015-02-19

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (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

Filters

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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 2015AZ43 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	1966-04-13 00:49	564.5	0.1739417	0.1596300	0.0047826
EARTH	1997-01-18 10:01	299.0	0.1848844	0.1761714	0.0029065
EARTH	2015-02-15 12:34	< 1 s	0.0197347	0.0197336	0.0000003
EARTH	2056-03-10 13:11	> 1 d	0.0184279	0.0115200	0.0025629
EARTH	2074-03-30 06:02	> 1 d	0.0671293	0.0273680	0.0181247
EARTH	2123-02-24 09:46	> 1 d	0.0038087	0.0022578	0.0079420

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
358.40162238	51.48144762	0.00285761	MINIMUM
180.55017958	235.51088861	1.74910251	SADDLE
1.54122958	236.64784087	1.99621291	SADDLE
180.51768474	55.48603997	3.74925668	MAXIMUM

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MOID Plots

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