Asteroids

52760 1998ML14 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.907

Aphelion (Q)

3.911

Eccentricity (e)

0.624

Inclination (i)

2.4

deg

Orbit period (P)

1365.3

Earth MOID

0.01697

U parameter

0.0

Next Earth close approach

Date

2028-07-22

Nominal distance (from Earth center)

0.15697

23483056

Maximum Brightness

16.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

17.4

mag

Diameter

810

Taxonomic type

Rotation period (T)

14.28

Discovery Information

Discovery Date

1998-06-24

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.408510

1-sigma variation

6.169E-10

Unit

Eccentricity (e)

Value

0.623623

1-sigma variation

3.090E-9

Unit

Inclination (i)

Value

2.4262

1-sigma variation

2.906E-6

Unit

Long. of Ascending Node (Ω)

Value

338.6528

1-sigma variation

2.929E-5

Unit

Arg. of Perihelion (ω)

Value

20.3589

1-sigma variation

2.908E-5

Unit

Mean Anomaly (M)

Value

92.55093

1-sigma variation

8.936E-7

Unit

Perihelion distance

Value

0.906507

1-sigma variation

Unit

Aphelion distance

Value

3.910513

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.081220

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.552961

1-sigma variation

Unit

MOID

Value

0.016971

1-sigma variation

Unit

Orbit Period

Value

1365.2783

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	3.80539E-19	1.78276E-18	2.64621E-16	-5.66036E-15	7.41178E-15	-5.37995E-16
e	1.78276E-18	9.54871E-18	-5.88817E-16	7.78697E-17	9.66874E-15	-2.73048E-15
i	2.64621E-16	-5.88817E-16	8.44671E-12	-7.38573E-11	7.23964E-11	-3.03993E-14
Ω	-5.66036E-15	7.78697E-17	-7.38573E-11	8.57868E-10	-8.46587E-10	3.07702E-12
ω	7.41178E-15	9.66874E-15	7.23964E-11	-8.46587E-10	8.45444E-10	-5.83262E-12
M	-5.37995E-16	-2.73048E-15	-3.03993E-14	3.07702E-12	-5.83262E-12	7.98509E-13

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

14.28

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

0.15

Unit

mag

Source

[3]

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

S,Sq;V

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

17.439

16.93

Unit

mag

Source

[4]

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.27

Unit

Source

[6]

Diameter

Value

810

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

Radar R

Visual S

Unit

Source

[7]

[8]

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Sources

No.	Name	Additional
[1]	EARN	1.) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids)
[2]	EARN	1.) Davies, J.K. et al. (2007) Icarus 186,111-125. (Near-infrared spectra of 12 near-Earth objects) (1627,4179, 5381,5587,6489,11405,14402,25143,25330,52760,66391,101955) 2.) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids)
[3]	EARN	1.) Warner, B.D. (2014) MPB 41,113-124. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2013 SEPTEMBER-DECEMBER)(LCs of 36 NEAs) 2.) Hicks, M.D. et al. (1998) B.A.A.S. 30, 1029. (Close encounters: Observations of the Earth-crossing asteroids 1998 KY26 and 1998 ML14) 3.) Hicks, M.D. et al. (1998) B.A.A.S. 30, 1029. (Close Encounters: Observations of the Earth-crossing Asteroids 1998 KY26 and 1998 ML14) 4.) Hicks, M.D. & P.R. Weissman (1998) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/06900/06987.html"> 6987.6987. (1998 ML14 - BVRI photometry period ampl)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Hicks, M.D. et al. (1998) B.A.A.S. 30, 1029. (Close Encounters: Observations of the Earth-crossing Asteroids 1998 KY26 and 1998 ML14) 2.) Hicks, M.D. & P.R. Weissman (1998) I.A.U. Circ. HREF="http://www.cbat.eps.harvard.edu/iauc/06900/06987.html"> 6987.6987. (1998 ML14 - BVRI photometry period ampl)
[6]	EARN	1.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 2.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)
[7]	EARN	1.) Daubar, I.J. et al. (1998) B.A.A.S. 30, 1390. (First Results from the Arecibo Observatory Planetary Radar) 4183 Cuno, 1994 AH2, 1998 ML14 2.) Ostro, S.J. et al. (2001) Meteoritics and Planetary Science 36, 1225-1236. (Radar observations of asteroid 1998 ML14)
[8]	EARN	1.) Davies, J.K. et al. (2007) Icarus 186,111-125. (Near-infrared spectra of 12 near-Earth objects) (1627,4179, 5381,5587,6489,11405,14402,25143,25330,52760,66391,101955)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

9768

Unit

Source

[1]

Unobserved

Value

196

Unit

Source

[1]

Normalized RMS of residuals

Value

0.503933

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1998-06-24.33475

Unit

Source

[2]

Last Observation

Value

2025-03-22.154866

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

696 (1)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

1998-08-13

Unit

Source

[3]

Last Observation

Value

2013-09-02

Unit

Source

[3]

Delay (Discarded)

Value

11 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

7 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

18 (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 52760 1998ML14 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
65 Cybele	1962-04-17 08:24	< 1 min	0.0124807	0.0124797	0.0000003
EARTH	1998-08-10 23:35	< 1 s	0.0181086	0.0181085	0.0000000
EARTH	2013-08-24 10:42	< 1 s	0.0562581	0.0562581	0.0000000
EARTH	2028-07-22 13:12	< 1 s	0.1569745	0.1569745	0.0000000
EARTH	2114-11-04 06:45	< 1 min	0.0375701	0.0375699	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
338.57668772	214.46861066	0.01664085	MINIMUM
19.03309958	296.01718523	0.03606397	MINIMUM
359.14353043	256.01841353	0.09738669	SADDLE
358.77494675	75.24201953	1.90309189	SADDLE
179.72395752	76.42599282	2.91528394	SADDLE
179.69888554	256.41215339	4.91475459	MAXIMUM

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MOID Plots

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