Asteroids

260141 2004QT24 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.847

Aphelion (Q)

1.418

Eccentricity (e)

0.252

Inclination (i)

17.7

deg

Orbit period (P)

440.4

Earth MOID

0.00752

U parameter

0.0

Next Earth close approach

Date

2027-10-24

Nominal distance (from Earth center)

0.13686

20473233

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.3

mag

Diameter

448

Taxonomic type

Scomp

Rotation period (T)

7.660

Discovery Information

Discovery Date

2004-08-27

Observatory

Siding Spring Survey

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

1.132785

1-sigma variation

1.419E-9

Unit

Eccentricity (e)

Value

0.251935

1-sigma variation

5.979E-8

Unit

Inclination (i)

Value

17.7460

1-sigma variation

8.902E-6

Unit

Long. of Ascending Node (Ω)

Value

36.0965

1-sigma variation

8.012E-6

Unit

Arg. of Perihelion (ω)

Value

76.6474

1-sigma variation

1.310E-5

Unit

Mean Anomaly (M)

Value

97.60623

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.847397

1-sigma variation

Unit

Aphelion distance

Value

1.418172

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.009230

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.118528

1-sigma variation

Unit

MOID

Value

0.007516

1-sigma variation

Unit

Orbit Period

Value

440.3717

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.01302E-18	-4.96160E-17	8.72426E-16	1.90831E-15	-3.87019E-15	-8.74912E-15
e	-4.96160E-17	3.57440E-15	1.72065E-14	-9.32055E-14	-6.79095E-14	1.27579E-13
i	8.72426E-16	1.72065E-14	7.92483E-11	-2.16305E-11	4.81612E-12	3.16628E-12
Ω	1.90831E-15	-9.32055E-14	-2.16305E-11	6.41921E-11	-6.48149E-11	6.78111E-13
ω	-3.87019E-15	-6.79095E-14	4.81612E-12	-6.48149E-11	1.71535E-10	-6.07125E-11
M	-8.74912E-15	1.27579E-13	3.16628E-12	6.78111E-13	-6.07125E-11	1.16740E-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

7.664

7.660

Unit

Source

[4]

[1]

Quality

Value

Unit

Source

[4]

Amplitude

Value

0.75

0.77

Unit

mag

Source

[4]

[1]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

169

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Scomp

Unit

Source

[2]

Taxonomy (all)

Value

Q;Scomp

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.27

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.42

Unit

Source

[7]

Diameter

Value

448

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

Visual S

Unit

Source

[8]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS): Paper 4. Skiff, Brian A et al.
[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	1.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 2.) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects) 3.) 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)
[4]	EARN	1.) Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Calculated by the NEOCC based on the albedo value
[7]	EARN	1.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs)
[8]	EARN	1.) Binzel, R.P. et al. (2006) LPSC 37, 1491. (The MIT-Hawaii-IRTF joint campaign for NEO spectral reconnaissance.) 2.) Binzel, R.P. et al. href="http://smass.mit.edu/minus.html"> Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

10921

Unit

Source

[1]

Unobserved

Value

871

Unit

Source

[1]

Normalized RMS of residuals

Value

0.544675

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1993-07-15.37558

Unit

Source

[2]

Last Observation

Value

2023-06-09.168928

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

759 (8)

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 260141 2004QT24 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	1951-11-01 16:15	< 1 min	0.0411709	0.0411664	0.0000015
EARTH	1964-04-15 23:21	< 1 min	0.1123069	0.1123052	0.0000006
EARTH	1970-04-17 11:49	< 1 min	0.1552506	0.1552487	0.0000006
EARTH	1986-10-28 07:54	< 1 min	0.0483599	0.0483588	0.0000004
EARTH	1992-11-04 12:28	< 1 min	0.1133701	0.1133690	0.0000004
EARTH	2005-04-16 05:13	< 1 s	0.1059056	0.1059054	0.0000001
EARTH	2011-04-17 15:05	< 1 s	0.1405116	0.1405114	0.0000001
EARTH	2027-10-24 14:19	< 1 s	0.1368551	0.1368544	0.0000002
EARTH	2033-10-31 19:37	< 1 min	0.0305584	0.0305577	0.0000002
EARTH	2046-04-16 04:07	< 1 s	0.0973570	0.0973564	0.0000002
EARTH	2062-10-23 21:39	< 1 min	0.1482724	0.1482667	0.0000019
EARTH	2068-11-02 12:43	< 1 min	0.0703934	0.0703870	0.0000021
EARTH	2081-04-16 02:48	< 1 min	0.1004321	0.1004312	0.0000003
EARTH	2097-10-30 03:14	< 1 min	0.0135211	0.0135188	0.0000007
EARTH	2103-11-06 11:09	< 1 min	0.1169640	0.1169621	0.0000007
EARTH	2116-04-18 16:01	< 1 min	0.1414170	0.1414101	0.0000023
EARTH	2122-04-17 15:55	< 1 min	0.0894179	0.0894156	0.0000008

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
297.90648717	295.49670970	0.00765001	MINIMUM
77.92433674	102.74684331	0.09119080	MINIMUM
9.24779501	21.96203883	0.31248877	SADDLE
187.13540705	195.83639047	0.54269085	SADDLE
3.01358764	193.66895035	1.84206666	SADDLE
178.18253573	8.50530511	2.37583927	MAXIMUM

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MOID Plots

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