Asteroids

3362 Khufu help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.526

Aphelion (Q)

1.453

Eccentricity (e)

0.468

Inclination (i)

9.9

deg

Orbit period (P)

359.5

Earth MOID

0.01300

U parameter

1.4

Next Earth close approach

Date

2044-08-24

Nominal distance (from Earth center)

0.11174

16715701

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.3

mag

Diameter

700

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

1984-08-30

Observatory

Palomar Mountain

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

0.989526

1-sigma variation

1.163E-8

Unit

Eccentricity (e)

Value

0.468460

1-sigma variation

0.000001

Unit

Inclination (i)

Value

9.9160

1-sigma variation

1.155E-5

Unit

Long. of Ascending Node (Ω)

Value

152.3980

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

55.0908

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

40.38054

1-sigma variation

0.00021

Unit

Perihelion distance

Value

0.525972

1-sigma variation

Unit

Aphelion distance

Value

1.453079

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.380699

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.043675

1-sigma variation

Unit

MOID

Value

0.013003

1-sigma variation

Unit

Orbit Period

Value

359.5333

1-sigma variation

Unit

U parameter

Value

1.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.35257E-16	-6.19388E-15	-1.04287E-13	-2.82506E-13	-6.93197E-14	-2.47124E-12
e	-6.19388E-15	3.10301E-13	4.95642E-12	1.27583E-11	3.23955E-12	1.16834E-10
i	-1.04287E-13	4.95642E-12	1.33476E-10	3.59519E-10	-5.57368E-11	1.87914E-9
Ω	-2.82506E-13	1.27583E-11	3.59519E-10	7.37387E-9	-6.34361E-9	4.90785E-9
ω	-6.93197E-14	3.23955E-12	-5.57368E-11	-6.34361E-9	6.39462E-9	1.25852E-9
M	-2.47124E-12	1.16834E-10	1.87914E-9	4.90785E-9	1.25852E-9	4.61463E-8

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

[6]

Amplitude

Value

>=0.14

Unit

mag

Source

[6]

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

18.39

18.308

Unit

mag

Source

[3]

[4]

Slope Parameter (G)

Value

0.15**

0.23

Unit

mag

Source

[4]

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.16

Unit

Source

[5]

Diameter

Value

700

Unit

Source

[5]

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

[2]

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Sources

No.	Name	Additional
[1]	EARN	1.) Lazzarin, M. et al. (2004) Icarus 169, 373-384. (Visible and near-infrared spectroscopic investigation of near-Earth objects at ESO: first results)
[2]	EARN	1.) Lazzarin, M. et al. (2004) Icarus 169, 373-384. (Visible and near-infrared spectroscopic investigation of near-Earth objects at ESO: first results) 2.) Lazzarin, M., Marchi,S. & Magrin, S. (2010) href="http://www.astro.unipd.it/planets/sineo/data.html"> SINEO Database (Spectroscopic Investiation of Near-Earth Objects)
[3]	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.) Wisniewski, W.Z. et al. (1997) Icarus 126, 395-449. (Photometric Observations of 125 Asteroids)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Veeder, G.J. et al. (1989) Astron. J. 97, 1211-1219. (Radiometry of near-earth asteroids)
[6]	EARN	1.) Wisniewski, W.Z. et al. (1997) Icarus 126, 395-449. (Photometric Observations of 125 Asteroids)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7394

Unit

Source

[1]

Unobserved

Value

7615

Unit

Source

[1]

Normalized RMS of residuals

Value

0.655269

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1984-08-30.46458

Unit

Source

[2]

Last Observation

Value

2004-11-27.55182

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

271 (7)

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 3362 Khufu 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	1981-08-26 01:28	< 1 min	0.1422348	0.1422325	0.0000008
EARTH	1982-08-23 04:53	< 1 min	0.0558450	0.0558425	0.0000008
EARTH	1983-08-21 00:45	< 1 min	0.0333354	0.0333330	0.0000008
EARTH	1984-08-19 06:37	< 1 min	0.1198178	0.1198156	0.0000007
EARTH	2001-12-29 11:00	< 1 min	0.1596474	0.1596465	0.0000003
EARTH	2002-12-25 02:13	< 1 min	0.1498173	0.1498166	0.0000002
EARTH	2003-12-20 21:12	< 1 min	0.1946412	0.1946404	0.0000003
EARTH	2044-08-24 23:21	< 1 min	0.1117376	0.1117184	0.0000064
EARTH	2045-08-22 01:37	< 1 min	0.0211644	0.0211492	0.0000050
EARTH	2046-08-20 07:38	< 1 min	0.0707369	0.0707216	0.0000051
EARTH	2047-08-20 22:26	< 1 min	0.1571616	0.1571500	0.0000039
EARTH	2064-12-28 21:03	1.3	0.1536767	0.1536569	0.0000066
EARTH	2065-12-24 15:28	1.4	0.1528153	0.1527967	0.0000062
EARTH	2107-08-28 01:34	2.6	0.1381554	0.1380116	0.0000479
EARTH	2108-08-23 23:19	2.3	0.0449212	0.0447836	0.0000459
EARTH	2109-08-21 18:33	1.3	0.0483033	0.0481806	0.0000409
EARTH	2110-08-21 13:00	< 1 min	0.1403956	0.1402969	0.0000329

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
93.16922535	226.69464357	0.01335553	MINIMUM
275.13492321	352.46871048	0.14611396	MINIMUM
184.21021013	288.01679764	0.48941334	SADDLE
5.94413247	113.13155705	0.49152161	SADDLE
4.05846495	289.95979591	1.51713503	SADDLE
180.55774557	105.81806037	2.45130068	MAXIMUM

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MOID Plots

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