Asteroids

415949 2001XY10 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.534

Aphelion (Q)

1.209

Eccentricity (e)

0.387

Inclination (i)

31.0

deg

Orbit period (P)

297.2

Earth MOID

0.05783

U parameter

0.1

Next Earth close approach

Date

2027-12-22

Nominal distance (from Earth center)

0.05784

8652284

Maximum Brightness

14.5

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

300 - 800*

Taxonomic type

Rotation period (T)

43.5

Discovery Information

Discovery Date

2001-12-11

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

0.871648

1-sigma variation

1.457E-9

Unit

Eccentricity (e)

Value

0.387340

1-sigma variation

1.239E-7

Unit

Inclination (i)

Value

30.9929

1-sigma variation

1.340E-5

Unit

Long. of Ascending Node (Ω)

Value

92.9273

1-sigma variation

2.380E-6

Unit

Arg. of Perihelion (ω)

Value

219.6890

1-sigma variation

1.257E-5

Unit

Mean Anomaly (M)

Value

256.66149

1-sigma variation

0.00003

Unit

Perihelion distance

Value

0.534024

1-sigma variation

Unit

Aphelion distance

Value

1.209273

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.071713

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.447208

1-sigma variation

Unit

MOID

Value

0.057833

1-sigma variation

Unit

Orbit Period

Value

297.2422

1-sigma variation

Unit

U parameter

Value

0.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.12348E-18	2.10007E-18	-1.10792E-15	-1.57079E-16	1.76865E-15	-2.06997E-14
e	2.10007E-18	1.53552E-14	2.07762E-13	1.55583E-13	1.00138E-12	-3.49023E-12
i	-1.10792E-15	2.07762E-13	1.79435E-10	1.41707E-11	-3.51064E-13	-3.28195E-11
Ω	-1.57079E-16	1.55583E-13	1.41707E-11	5.66274E-12	-5.96368E-12	-1.92381E-11
ω	1.76865E-15	1.00138E-12	-3.51064E-13	-5.96368E-12	1.57881E-10	-3.33717E-10
M	-2.06997E-14	-3.49023E-12	-3.28195E-11	-1.92381E-11	-3.33717E-10	1.07750E-9

Date of computation: 2025-11-24 16:53 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

43.5

Unit

Source

[2]

Quality

Value

Unit

Source

[2]

Amplitude

Value

0.35

Unit

mag

Source

[2]

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

[1]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.405

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

300 - 800*

Unit

Source

[4]

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

Radar R

Unit

Source

[1]

[5]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) 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.)
[2]	EARN	1.) Warner, B.D. (2015) MPB 42, 115-127. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 OCTOBER-DECEMBER)(43NEAs)
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude
[5]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8073

Unit

Source

[1]

Unobserved

Value

724

Unit

Source

[1]

Normalized RMS of residuals

Value

0.539514

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2001-12-11.46685

Unit

Source

[2]

Last Observation

Value

2024-01-18.612788

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

252 (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

2014-12-23

Unit

Source

[3]

Last Observation

Value

2014-12-23

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

2 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

3 (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 415949 2001XY10 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1957-12-21 18:39	< 1 s	0.0811838	0.0811821	0.0000006
EARTH	1970-12-24 06:23	< 1 min	0.1845465	0.1845445	0.0000007
EARTH	1979-12-22 05:32	< 1 s	0.1032731	0.1032718	0.0000004
EARTH	1992-12-21 08:35	< 1 s	0.0629295	0.0629291	0.0000001
EARTH	2005-12-23 10:33	< 1 s	0.1542908	0.1542904	0.0000001
EARTH	2014-12-22 10:58	< 1 s	0.1238964	0.1238964	0.0000000
EARTH	2027-12-22 02:25	< 1 s	0.0578369	0.0578368	0.0000001
EARTH	2040-12-22 20:53	< 1 s	0.1333858	0.1333845	0.0000004
EARTH	2049-12-22 20:50	< 1 min	0.1475490	0.1475474	0.0000005
EARTH	2062-12-21 22:11	< 1 s	0.0617325	0.0617316	0.0000003
EARTH	2075-12-23 04:14	< 1 min	0.1037519	0.1037489	0.0000010
EARTH	2084-12-23 12:16	< 1 min	0.1744002	0.1743968	0.0000011
EARTH	2097-12-21 20:51	< 1 s	0.0785090	0.0785060	0.0000010
EARTH	2110-12-23 13:19	< 1 min	0.0756473	0.0756441	0.0000011
EARTH	2123-12-26 01:32	< 1 min	0.1804963	0.1804912	0.0000017

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
117.98578723	348.50638557	0.05783261	MINIMUM
312.85311751	147.25992632	0.41866401	MINIMUM
232.57546975	64.49007659	0.54151774	SADDLE
24.79155029	247.62322167	0.59034627	SADDLE
9.83920197	43.17234035	1.49458252	SADDLE
171.15473089	201.15885090	2.19897308	MAXIMUM

Download:

MOID Plots

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