Asteroids

2015HM10 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.004

Aphelion (Q)

4.071

Eccentricity (e)

0.604

Inclination (i)

1.5

deg

Orbit period (P)

1476.6

Earth MOID

0.00462

U parameter

0.0

Next Earth close approach

Date

2109-06-26

Nominal distance (from Earth center)

0.0463

6926778

Maximum Brightness

17.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

23.6

mag

Diameter

50 - 110*

Taxonomic type

Rotation period (T)

0.3760

Discovery Information

Discovery Date

2015-04-19

Observatory

Cerro Tololo-DECam

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

2.537709

1-sigma variation

7.067E-9

Unit

Eccentricity (e)

Value

0.604262

1-sigma variation

4.104E-9

Unit

Inclination (i)

Value

1.5063

1-sigma variation

2.220E-6

Unit

Long. of Ascending Node (Ω)

Value

282.3853

1-sigma variation

1.519E-5

Unit

Arg. of Perihelion (ω)

Value

355.1001

1-sigma variation

1.644E-5

Unit

Mean Anomaly (M)

Value

207.46337

1-sigma variation

1.021E-6

Unit

Perihelion distance

Value

1.004267

1-sigma variation

Unit

Aphelion distance

Value

4.071151

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.012442

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

3.063968

1-sigma variation

Unit

MOID

Value

0.004620

1-sigma variation

Unit

Orbit Period

Value

1476.5945

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.99389E-17	-1.95805E-17	-4.76241E-16	1.37807E-14	-4.80788E-14	5.64844E-15
e	-1.95805E-17	1.68414E-17	-2.17028E-17	-3.47985E-15	1.99340E-14	-3.96935E-15
i	-4.76241E-16	-2.17028E-17	4.93007E-12	1.43500E-11	-1.48598E-11	4.24358E-13
Ω	1.37807E-14	-3.47985E-15	1.43500E-11	2.30857E-10	-2.38178E-10	3.17286E-13
ω	-4.80788E-14	1.99340E-14	-1.48598E-11	-2.38178E-10	2.70407E-10	-4.87038E-12
M	5.64844E-15	-3.96935E-15	4.24358E-13	3.17286E-13	-4.87038E-12	1.04148E-12

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

0.3760

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

1.47

Unit

mag

Source

[1]

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

23.6

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

50 - 110*

Unit

Source

[3]

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

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Warner, B.D. & W.H. Ryan (2016) MPB 43, 30-31. (LIGHTCURVE ANALYSIS OF NEA 2015 HM10)
[2]	ESA Aegis	ESA orbit determination and impact monitoring system
[3]	Estimation	Estimated from absolute magnitude
[4]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage 2.) href="https://public.nrao.edu/news/pressreleases/radar-2015-hm10?utm_content=buffer64bf0&utm_medium=social&utm_source=plus.google.com&utm_campaign=buffer"> NASA Press Release on 2015 HM10

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

1586

Unit

Source

[1]

Unobserved

Value

2232

Unit

Source

[1]

Normalized RMS of residuals

Value

0.516446

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-04-18.08088

Unit

Source

[2]

Last Observation

Value

2019-08-21.40848

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

233 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-07-06

Unit

Source

[3]

Last Observation

Value

2015-07-06

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 2015HM10 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	1978-06-24 14:24	2.6	0.0539490	0.0539448	0.0000014
EARTH	2015-07-07 18:38	< 1 s	0.0029530	0.0029530	0.0000000
EARTH	2019-07-24 05:59	< 1 s	0.0313480	0.0313479	0.0000000
EARTH	2023-08-14 00:23	< 1 s	0.1935959	0.1935959	0.0000000
16 Psyche	2026-09-27 21:07	< 1 min	0.0055090	0.0055087	0.0000001
EARTH	2109-06-26 07:13	< 1 min	0.0463027	0.0463023	0.0000001

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
6.14069421	187.38242587	0.00333747	MINIMUM
354.60061797	163.85986056	0.00782962	MINIMUM
359.54206338	173.93148062	0.01021548	SADDLE
0.10133688	355.07728603	1.99008126	SADDLE
180.02455671	354.98401588	3.08798957	SADDLE
180.02792434	174.98633386	5.08793209	MAXIMUM

Download:

MOID Plots

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