Asteroids

2006RH120 help

Last update: 2026-07-31 13:27 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

1.008

Aphelion (Q)

1.059

Eccentricity (e)

0.024

Inclination (i)

0.6

deg

Orbit period (P)

383.6

Earth MOID

0.01640

U parameter

2.0

Next Earth close approach

Date

2028-08-08

Nominal distance (from Earth center)

0.02877

4303849

Maximum Brightness

23.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

29.5

mag

Diameter

3 - 7*

Taxonomic type

Rotation period (T)

0.04580

Discovery Information

Discovery Date

2006-09-14

Observatory

University of Arizona 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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.033268

1-sigma variation

7.999E-8

Unit

Eccentricity (e)

Value

0.024496

1-sigma variation

9.202E-8

Unit

Inclination (i)

Value

0.5943

1-sigma variation

4.045E-7

Unit

Long. of Ascending Node (Ω)

Value

51.2174

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

9.9531

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

233.67178

1-sigma variation

0.00064

Unit

Perihelion distance

Value

1.007957

1-sigma variation

Unit

Aphelion distance

Value

1.058579

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018258

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.048249

1-sigma variation

Unit

MOID

Value

0.016405

1-sigma variation

Unit

Orbit Period

Value

383.6346

1-sigma variation

Unit

U parameter

Value

2.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.39829E-15	7.10986E-15	3.18289E-14	-5.65401E-12	-4.66209E-12	-5.07683E-11
e	7.10986E-15	8.46760E-15	3.39730E-14	-9.15146E-12	-1.46042E-12	-5.71775E-11
i	3.18289E-14	3.39730E-14	1.63595E-13	-2.11699E-11	-3.22971E-11	-2.50623E-10
Ω	-5.65401E-12	-9.15146E-12	-2.11699E-11	2.05759E-8	-1.57124E-8	4.86727E-8
ω	-4.66209E-12	-1.46042E-12	-3.22971E-11	-1.57124E-8	2.87660E-8	3.20309E-8
M	-5.07683E-11	-5.71775E-11	-2.50623E-10	4.86727E-8	3.20309E-8	4.03861E-7

Date of computation: 2026-07-31 13:27 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

0.04580

0.03080

Unit

Source

[1]

Quality

Value

Unit

Source

[1]

Amplitude

Value

1.2

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

29.534

Unit

mag

Source

[2]

Slope Parameter (G)

Value

0.15**

Unit

Source

[2]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[3]

Diameter

Value

3 - 7*

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.) Kwiatkowski, T. et al. (2008) ACM2008, 8297. (Photometry of asteroid 2006 RH120 during its short visit to a geocentric orbit)
[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

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

284

Unit

Source

[1]

Unobserved

Value

7055

Unit

Source

[1]

Normalized RMS of residuals

Value

1.34072

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2006-09-11.20243

Unit

Source

[2]

Last Observation

Value

2007-06-22.32603

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

136 (48)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2007-06-12

Unit

Source

[3]

Last Observation

Value

2007-06-14

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

2 (2)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (2)

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

Filters

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Final Date: *

Normalised Only accepted

Max residual (arcsec):

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Computation parameters

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Final Date: *

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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 2006RH120 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	1957-05-18 12:51	300.4	0.1595849	0.0930214	0.0222131
EARTH	1957-10-11 17:30	> 1 mo	0.0876198	0.0760630	0.0039931
EARTH	1969-05-30 05:55	209.6	0.0315627	0.0295498	0.0006730
EARTH	1979-05-18 17:12	15.8	0.0176428	0.0175934	0.0000165
EARTH	1992-12-21 23:26	99.3	0.0775807	0.0775730	0.0000025
EARTH	1993-05-31 01:59	< 1 min	0.1674720	0.1673916	0.0000268
EARTH	2006-09-11 07:37	< 1 min	0.0056101	0.0056101	0.0000000
EARTH	2007-01-03 18:01	< 1 min	0.0035657	0.0035656	0.0000000
EARTH	2007-03-25 12:30	< 1 min	0.0023625	0.0023625	0.0000000
EARTH	2007-06-14 05:30	< 1 min	0.0018504	0.0018504	0.0000000
EARTH	2028-08-08 14:50	581.3	0.0287695	0.0287485	0.0000070
EARTH	2044-06-03 14:42	> 1 d	0.0663823	0.0657560	0.0002098
EARTH	2059-12-11 12:22	660.8	0.0219247	0.0182537	0.0012237
EARTH	2084-03-04 11:24	> 1 mo	0.0278353	0.0250289	0.0423677
EARTH	2109-05-06 04:37	> 1 mo	0.0245843	0.0235786	0.1751999

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
326.74559069	283.65007321	0.01640490	MINIMUM
136.75865393	93.57201836	0.05081093	SADDLE
317.90612609	94.66400070	2.01573587	SADDLE
140.26491730	277.02316503	2.05059877	MAXIMUM

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MOID Plots

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