Asteroids

2001AV43 help

Last update: 2026-07-30 11:21 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.975

Aphelion (Q)

1.593

Eccentricity (e)

0.241

Inclination (i)

0.2

deg

Orbit period (P)

531.2

Earth MOID

0.00167

U parameter

0.5

Next Earth close approach

Date

2029-11-11

Nominal distance (from Earth center)

0.00209

313057

Maximum Brightness

15.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.8

mag

Diameter

29 - 70*

Taxonomic type

Rotation period (T)

0.1701

Discovery Information

Discovery Date

2001-01-05

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.283665

1-sigma variation

1.128E-8

Unit

Eccentricity (e)

Value

0.240812

1-sigma variation

1.522E-8

Unit

Inclination (i)

Value

0.2007

1-sigma variation

1.279E-6

Unit

Long. of Ascending Node (Ω)

Value

20.5298

1-sigma variation

0.0007

Unit

Arg. of Perihelion (ω)

Value

51.2798

1-sigma variation

0.0007

Unit

Mean Anomaly (M)

Value

218.12119

1-sigma variation

0.00005

Unit

Perihelion distance

Value

0.974543

1-sigma variation

Unit

Aphelion distance

Value

1.592787

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.055193

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.417428

1-sigma variation

Unit

MOID

Value

0.001670

1-sigma variation

Unit

Orbit Period

Value

531.2220

1-sigma variation

Unit

U parameter

Value

0.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.27350E-16	1.66966E-16	2.66540E-15	6.47616E-12	-6.39301E-12	-5.16875E-13
e	1.66966E-16	2.31504E-16	1.39959E-15	7.80360E-12	-7.67309E-12	-6.90478E-13
i	2.66540E-15	1.39959E-15	1.63599E-12	5.15897E-10	-5.18686E-10	-8.15659E-12
Ω	6.47616E-12	7.80360E-12	5.15897E-10	5.36583E-7	-5.35812E-7	-2.42359E-8
ω	-6.39301E-12	-7.67309E-12	-5.18686E-10	-5.35812E-7	5.35172E-7	2.38532E-8
M	-5.16875E-13	-6.90478E-13	-8.15659E-12	-2.42359E-8	2.38532E-8	2.12473E-9

Date of computation: 2026-07-30 11:21 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

0.1701

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

0.26

Unit

mag

Source

[1]

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

24.799

24.9

Unit

mag

Source

[2]

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

29 - 70*

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

Radar R

Unit

Source

[5]

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Sources

No.	Name	Additional
[1]	EARN	1.) Whiteley, R.J. et al. (2002) Proceedings of ACM2002, ESA-SP500, pp. 473-480. (Monolithic fast-rotating asteroids) (H-values and rotation properties of 36 NEAs) 2.) Hergenrother, C.W. & R.J. Whiteley (2002) In preparation. (A Survey of Small Monolithic Fast-Rotating Asteroids) = published in 0B20!!
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	EARN	1.) Whiteley, R.J. et al. (2002) Proceedings of ACM2002, ESA-SP500, pp. 473-480. (Monolithic fast-rotating asteroids) (H-values and rotation properties of 36 NEAs)
[4]	Estimation	Estimated from absolute magnitude
[5]	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

4835

Unit

Source

[1]

Unobserved

Value

4633

Unit

Source

[1]

Normalized RMS of residuals

Value

0.551624

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2000-08-30.08073

Unit

Source

[2]

Last Observation

Value

2013-10-28.21504

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

104 (2)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2001-01-14

Unit

Source

[3]

Last Observation

Value

2013-11-24

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (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

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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 2001AV43 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
MARS	1962-02-26 18:55	189.3	0.0358840	0.0337812	0.0007395
EARTH	1973-12-24 16:31	3.4	0.0039796	0.0039775	0.0000007
EARTH	2000-12-29 08:18	< 1 min	0.0090427	0.0090427	0.0000000
EARTH	2013-11-18 21:35	< 1 s	0.0075997	0.0075997	0.0000000
EARTH	2029-11-11 15:23	< 1 min	0.0020927	0.0020912	0.0000005
EARTH	2032-10-11 14:26	6.0	0.1451880	0.1449833	0.0000682
EARTH	2076-01-10 11:37	73.0	0.1231234	0.1209842	0.0007131
EARTH	2078-12-02 10:11	480.3	0.0079401	0.0077587	0.0000618
EARTH	2081-10-10 01:20	279.7	0.1474237	0.1390144	0.0028033
MARS	2104-09-05 09:37	> 1 d	0.0188135	0.0101069	0.0139298
EARTH	2119-01-03 11:17	> 1 d	0.0639836	0.0191347	0.0151346
EARTH	2121-10-31 00:08	366.2	0.0186038	0.0142133	0.0014689

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
341.32112101	304.44833401	0.00166975	MINIMUM
14.17738440	345.70914152	0.00327728	MINIMUM
357.89917185	325.27344471	0.01201954	SADDLE
178.63192458	145.99822830	0.57872906	SADDLE
357.70636495	145.04551519	1.98853424	SADDLE
178.66755650	326.03569146	2.57898376	MAXIMUM

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MOID Plots

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