Asteroids

2015QH3 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.009

Aphelion (Q)

1.501

Eccentricity (e)

0.196

Inclination (i)

11.8

deg

Orbit period (P)

513.5

Earth MOID

0.01033

U parameter

7.8

Next Earth close approach

Date

2029-09-17

Nominal distance (from Earth center)

0.18633

27873853

Maximum Brightness

26.3

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

mag

Diameter

11 - 24*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-08-20

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

1.255033

1-sigma variation

0.000735

Unit

Eccentricity (e)

Value

0.195855

1-sigma variation

0.000182

Unit

Inclination (i)

Value

11.8318

1-sigma variation

0.0118

Unit

Long. of Ascending Node (Ω)

Value

327.6350

1-sigma variation

0.0067

Unit

Arg. of Perihelion (ω)

Value

23.6792

1-sigma variation

0.3169

Unit

Mean Anomaly (M)

Value

96.67772

1-sigma variation

0.82589

Unit

Perihelion distance

Value

1.009228

1-sigma variation

Unit

Aphelion distance

Value

1.500837

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.010685

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.481950

1-sigma variation

Unit

MOID

Value

0.010333

1-sigma variation

Unit

Orbit Period

Value

513.5480

1-sigma variation

Unit

U parameter

Value

7.8

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.40670E-7	1.33890E-7	8.70516E-6	4.91200E-6	-2.33020E-4	-6.07278E-4
e	1.33890E-7	3.31562E-8	2.15572E-6	1.21639E-6	-5.77042E-5	-1.50385E-4
i	8.70516E-6	2.15572E-6	1.40161E-4	7.90866E-5	-3.75177E-3	-9.77759E-3
Ω	4.91200E-6	1.21639E-6	7.90866E-5	4.46257E-5	-2.11699E-3	-5.51713E-3
ω	-2.33020E-4	-5.77042E-5	-3.75177E-3	-2.11699E-3	1.00428E-1	2.61726E-1
M	-6.07278E-4	-1.50385E-4	-9.77759E-3	-5.51713E-3	2.61726E-1	6.82091E-1

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

27.006

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

[2]

Diameter

Value

11 - 24*

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

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

3679

Unit

Source

[1]

Normalized RMS of residuals

Value

0.497645

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-08-20.34625

Unit

Source

[2]

Last Observation

Value

2015-08-26.324481

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

60 (3)

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 2015QH3 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	1956-08-20 15:56	> 1 d	0.0119564	0.0103666	0.0059360
EARTH	1963-09-01 21:16	> 1 d	0.0844656	0.0076243	0.0257420
EARTH	2008-08-08 18:34	795.1	0.1249480	0.1027241	0.0074092
EARTH	2015-08-21 18:17	< 1 min	0.0112492	0.0112374	0.0000039
EARTH	2022-08-22 21:21	1262.6	0.0141551	0.0107229	0.0047344
EARTH	2029-09-17 07:00	> 1 d	0.1863252	0.0664622	0.0435923
EARTH	2060-08-08 08:28	> 1 w	0.1308460	0.0053583	0.1586673
EARTH	2067-08-26 19:44	> 1 w	0.0400746	0.0085595	0.1267198
EARTH	2098-08-21 20:59	> 1 mo	0.0112087	0.0112071	0.0151921

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
341.19270115	226.87096400	0.01156964	MINIMUM
187.34900024	73.95219219	0.51845162	SADDLE
357.83571652	66.85100789	2.00136994	SADDLE
175.63764037	244.50945047	2.50542646	MAXIMUM

Download:

MOID Plots

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