Asteroids

525268 2004XL14 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.448

Aphelion (Q)

1.071

Eccentricity (e)

0.410

Inclination (i)

21.5

deg

Orbit period (P)

241.8

Earth MOID

0.02728

U parameter

1.3

A₂

-40.6

10^-15au/days²

Next Earth close approach

Date

2049-12-05

Nominal distance (from Earth center)

0.16495

24675663

Maximum Brightness

19.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.3

mag

Diameter

300

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2004-12-10

Observatory

Catalina Sky 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

0.759550

1-sigma variation

1.153E-8

Unit

Eccentricity (e)

Value

0.410390

1-sigma variation

3.039E-7

Unit

Inclination (i)

Value

21.4647

1-sigma variation

1.898E-5

Unit

Long. of Ascending Node (Ω)

Value

85.6022

1-sigma variation

3.176E-6

Unit

Arg. of Perihelion (ω)

Value

157.5968

1-sigma variation

3.430E-5

Unit

Mean Anomaly (M)

Value

78.19417

1-sigma variation

0.00006

Unit

Perihelion distance

Value

0.447838

1-sigma variation

Unit

Aphelion distance

Value

1.071261

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.033662

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.559606

1-sigma variation

Unit

MOID

Value

0.027278

1-sigma variation

Unit

Orbit Period

Value

241.7868

1-sigma variation

Unit

U parameter

Value

1.3

1-sigma variation

Unit

A₂

Value

-40.58271

1-sigma variation

11.39340

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	1.33013E-16	2.95007E-15	9.74252E-14	1.64103E-14	-3.34330E-13	-3.24242E-13	1.31207E-7
e	2.95007E-15	9.23319E-14	3.03561E-12	4.64160E-13	-1.01627E-11	9.31164E-13	2.90268E-6
i	9.74252E-14	3.03561E-12	3.60359E-10	1.45911E-11	-2.87490E-10	-9.69123E-11	9.31986E-5
Ω	1.64103E-14	4.64160E-13	1.45911E-11	1.00893E-11	-6.43636E-11	4.61816E-12	1.63062E-5
ω	-3.34330E-13	-1.01627E-11	-2.87490E-10	-6.43636E-11	1.17651E-9	-1.15747E-10	-3.29694E-4
M	-3.24242E-13	9.31164E-13	-9.69123E-11	4.61816E-12	-1.15747E-10	3.48472E-9	-3.16991E-4
A₂	1.31207E-7	2.90268E-6	9.31986E-5	1.63062E-5	-3.29694E-4	-3.16991E-4	1.29810E2

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

[-]

Amplitude

Value

Unit

mag

Source

[-]

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

21.265

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[-]

Diameter

Value

300

Unit

Source

[2]

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

Visual S

Unit

Source

[3]

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	EARN	1.) Busch, M.W. et al. (2012) DPS 44 302-05. (abstract) (Radar Imaging Of 11066 Sigurd, 2000 YF29, And 2004 XL14 And The Obliquity Distribution Of Contact Binary Near-Earth Asteroids)
[3]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) Busch, M.W. et al. (2012) DPS 44 302-05. (abstract) (Radar Imaging Of 11066 Sigurd, 2000 YF29, And 2004 XL14 And The Obliquity Distribution Of Contact Binary Near-Earth Asteroids)
[4]	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

5109

Unit

Source

[1]

Unobserved

Value

2510

Unit

Source

[1]

Normalized RMS of residuals

Value

0.582719

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2004-12-10.28565

Unit

Source

[2]

Last Observation

Value

2018-12-06.641816

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

287 (12)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2008-12-17

Unit

Source

[3]

Last Observation

Value

2008-12-18

Unit

Source

[3]

Delay (Discarded)

Value

2 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

4 (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

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 525268 2004XL14 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	1951-12-10 04:17	1.3	0.1370454	0.1370240	0.0000071
EARTH	1953-12-14 16:02	< 1 min	0.0912244	0.0912026	0.0000073
EARTH	1955-12-18 19:25	< 1 min	0.0444753	0.0444569	0.0000061
EARTH	1957-12-20 09:08	< 1 min	0.0318060	0.0317940	0.0000040
EARTH	1959-12-21 18:18	< 1 min	0.0823891	0.0823677	0.0000071
EARTH	1961-12-20 23:12	< 1 min	0.1475297	0.1475081	0.0000072
EARTH	2000-12-05 18:08	< 1 min	0.1639563	0.1639556	0.0000002
EARTH	2002-12-12 06:23	< 1 min	0.1177278	0.1177274	0.0000001
EARTH	2004-12-16 11:14	< 1 s	0.0678869	0.0678867	0.0000001
EARTH	2006-12-20 00:32	< 1 s	0.0278590	0.0278589	0.0000000
EARTH	2008-12-20 23:35	< 1 s	0.0612298	0.0612298	0.0000000
EARTH	2010-12-21 14:03	< 1 s	0.1253577	0.1253576	0.0000000
EARTH	2012-12-20 03:01	< 1 min	0.1961618	0.1961616	0.0000001
EARTH	2049-12-05 21:22	< 1 min	0.1649466	0.1649355	0.0000037
EARTH	2051-12-12 10:56	< 1 min	0.1188650	0.1188514	0.0000045
EARTH	2053-12-16 17:13	< 1 min	0.0693263	0.0693107	0.0000052
EARTH	2055-12-20 07:31	< 1 min	0.0289338	0.0289286	0.0000018
EARTH	2057-12-21 07:49	< 1 min	0.0586468	0.0586232	0.0000079
EARTH	2059-12-22 00:41	< 1 min	0.1220896	0.1220574	0.0000107
EARTH	2061-12-20 15:14	< 1 min	0.1925081	0.1924700	0.0000127
EARTH	2098-12-05 11:03	4.5	0.1696727	0.1696078	0.0000216
EARTH	2100-12-12 01:48	4.2	0.1248215	0.1247478	0.0000246
EARTH	2102-12-17 13:39	3.3	0.0755681	0.0754885	0.0000265
EARTH	2104-12-20 09:34	2.0	0.0320433	0.0320006	0.0000143
EARTH	2106-12-22 14:08	< 1 min	0.0510224	0.0509315	0.0000303
EARTH	2108-12-22 12:02	< 1 min	0.1113060	0.1111895	0.0000388
EARTH	2110-12-22 06:29	< 1 min	0.1804542	0.1803290	0.0000418

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
217.82202096	345.98557298	0.02718045	MINIMUM
347.22159799	121.53149680	0.57788904	SADDLE
358.32665342	318.53513678	1.43178822	SADDLE
183.75637567	145.19044182	2.07982502	MAXIMUM

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MOID Plots

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