Asteroids

480936 2003QH5 help

Last update: 2026-06-04 23:11 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.982

Aphelion (Q)

1.537

Eccentricity (e)

0.220

Inclination (i)

17.6

deg

Orbit period (P)

516.4

Earth MOID

0.00626

U parameter

0.0

Next Earth close approach

Date

2044-07-29

Nominal distance (from Earth center)

0.12798

19146207

Maximum Brightness

18.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.3

mag

Diameter

260

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2003-08-21

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.259595

1-sigma variation

8.865E-10

Unit

Eccentricity (e)

Value

0.220171

1-sigma variation

3.078E-8

Unit

Inclination (i)

Value

17.6189

1-sigma variation

1.084E-5

Unit

Long. of Ascending Node (Ω)

Value

299.2030

1-sigma variation

9.660E-6

Unit

Arg. of Perihelion (ω)

Value

321.1962

1-sigma variation

1.436E-5

Unit

Mean Anomaly (M)

Value

86.08264

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.982268

1-sigma variation

Unit

Aphelion distance

Value

1.536921

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.006745

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.462711

1-sigma variation

Unit

MOID

Value

0.006258

1-sigma variation

Unit

Orbit Period

Value

516.3505

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.85919E-19	-1.36542E-18	3.49500E-15	2.95110E-15	-5.18354E-15	9.30952E-17
e	-1.36542E-18	9.47215E-16	-8.91608E-15	-4.36311E-15	-1.14861E-13	3.38385E-14
i	3.49500E-15	-8.91608E-15	1.17445E-10	6.25311E-11	-6.67684E-11	-4.09473E-12
Ω	2.95110E-15	-4.36311E-15	6.25311E-11	9.33094E-11	-8.13923E-11	-1.50128E-11
ω	-5.18354E-15	-1.14861E-13	-6.67684E-11	-8.13923E-11	2.06348E-10	-6.67032E-11
M	9.30952E-17	3.38385E-14	-4.09473E-12	-1.50128E-11	-6.67032E-11	5.31091E-11

Date of computation: 2026-06-04 23:11 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

20.28

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.056

0.204

0.056

Unit

Source

[3]

[2]

[4]

Diameter

Value

260

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]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[3]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)
[4]	EARN	1.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7437

Unit

Source

[1]

Unobserved

Value

887

Unit

Source

[1]

Normalized RMS of residuals

Value

0.625217

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-08-21.22334

Unit

Source

[2]

Last Observation

Value

2023-12-31.281817

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

280 (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

2020-07-17

Unit

Source

[3]

Last Observation

Value

2020-07-17

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

1 (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

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 480936 2003QH5 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	1962-07-28 05:54	< 1 s	0.0958574	0.0958571	0.0000001
EARTH	1979-07-15 05:44	< 1 s	0.0861525	0.0861523	0.0000001
EARTH	2003-07-26 07:42	< 1 s	0.0605991	0.0605988	0.0000001
EARTH	2020-07-14 11:11	< 1 min	0.0869026	0.0869025	0.0000000
EARTH	2044-07-29 23:47	< 1 s	0.1279845	0.1279840	0.0000001
EARTH	2061-07-18 13:18	< 1 min	0.0420179	0.0420174	0.0000002
EARTH	2085-07-23 14:06	< 1 min	0.0259694	0.0259678	0.0000005
EARTH	2102-07-20 10:44	< 1 min	0.0344178	0.0344063	0.0000038
EARTH	2126-08-01 04:33	1.4	0.1353787	0.1353268	0.0000173

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
31.09550851	194.63002003	0.00625800	MINIMUM
161.17747098	322.60951182	0.61456709	SADDLE
355.97243679	331.87298533	1.95739407	SADDLE
185.28813485	161.70204853	2.54261159	MAXIMUM

Download:

MOID Plots

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