Asteroids

3352 McAuliffe help

Last update: 2026-09-08 13:00 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Amor

Perihelion (q)

1.185

Aphelion (Q)

2.573

Eccentricity (e)

0.369

Inclination (i)

4.8

deg

Orbit period (P)

940.8

Earth MOID

0.20252

U parameter

0.0

Next Earth close approach

Date

Nominal distance (from Earth center)

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

15.9

mag

Diameter

1550

Taxonomic type

Rotation period (T)

2.205

Discovery Information

Discovery Date

1981-02-06

Observatory

Lowell Observatory, Anderson Mesa Station

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

1.879004

1-sigma variation

2.011E-9

Unit

Eccentricity (e)

Value

0.369130

1-sigma variation

1.580E-8

Unit

Inclination (i)

Value

4.7713

1-sigma variation

2.025E-6

Unit

Long. of Ascending Node (Ω)

Value

107.3257

1-sigma variation

3.305E-5

Unit

Arg. of Perihelion (ω)

Value

16.1094

1-sigma variation

3.342E-5

Unit

Mean Anomaly (M)

Value

217.39453

1-sigma variation

0.00001

Unit

Perihelion distance

Value

1.185407

1-sigma variation

Unit

Aphelion distance

Value

2.572601

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.214610

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.497815

1-sigma variation

Unit

MOID

Value

0.202520

1-sigma variation

Unit

Orbit Period

Value

940.7844

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.04540E-18	4.79101E-18	-3.27923E-17	-1.24411E-15	5.74413E-15	-8.68130E-15
e	4.79101E-18	2.49496E-16	-1.22095E-16	3.69760E-16	1.12516E-14	-1.90416E-14
i	-3.27923E-17	-1.22095E-16	4.09995E-12	-7.39693E-12	7.13498E-12	2.63738E-13
Ω	-1.24411E-15	3.69760E-16	-7.39693E-12	1.09230E-9	-1.09051E-9	3.22247E-12
ω	5.74413E-15	1.12516E-14	7.13498E-12	-1.09051E-9	1.11685E-9	-3.16763E-11
M	-8.68130E-15	-1.90416E-14	2.63738E-13	3.22247E-12	-3.16763E-11	3.62919E-11

Date of computation: 2026-09-08 13:00 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

2.205

Unit

Source

[5]

Quality

Value

3,B,U

Unit

Source

[5]

Amplitude

Value

0.16

Unit

mag

Source

[5]

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

A;S,Sr

Unit

Source

[3]

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

15.924

16.068

Unit

mag

Source

[6]

[7]

Slope Parameter (G)

Value

0.15**

0.19

Unit

Source

[6]

[7]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.274

Unit

Source

[8]

Diameter

Value

1550

Unit

Source

[8]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Visual S

Unit

Source

[9]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	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)
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.) 2.) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.) 3.) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids) 4.) 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)
[5]	EARN	1.) Monteiro, F. et al. (2018) MPB 45, 221-224. (Rotational Period Determination for 12 Near-Earth Asteroids) 2.) Warner, B.D. (2017) MPB 44, 22-36. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 JULY-SEPTEMBER) (46 NEAs) 3.) Howell, J.A. (2012) MPB 39, 157. (LIGHTCURVE ANALYSIS OF NEAR-EARTH ASTEROID 3352 MCAULIFFE) 4.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[8]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[9]	EARN	1.) Lazzarin, M. et al. (1997) Astron. & Astrophys. 327, 388-391. (Compositional properties of Near-Earth Asteroids: spectroscopic comparison with Ordinary Chondrite Meteorites) 2.) Lazzarin, M. et al. (1997) B.A.A.S. 29, 966. (Spectroscopic Comparison Between Near-Earth Asteroids and Ordinary Chondrites Meteorites) 3.) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.) 4.) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

16649

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.451415

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1981-02-06.17847

Unit

Source

[2]

Last Observation

Value

2026-09-07.25448

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

3060 (9)

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

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

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
359.37334619	17.81206676	0.20252023	MINIMUM
180.49169667	199.43326200	1.55715404	SADDLE
0.83100796	199.91667357	2.20113175	SADDLE
180.22814053	19.24990560	3.55682102	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out