Asteroids

2006RH120 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

1.008

Aphelion (Q)

1.059

Eccentricity (e)

0.024

Inclination (i)

0.6

deg

Orbit period (P)

383.7

Earth MOID

0.01720

U parameter

2.0

Next Earth close approach

Date

2028-08-08

Nominal distance (from Earth center)

0.02877

4304319

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)

0.03080

Discovery Information

Discovery Date

2006-09-14

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.033309

1-sigma variation

8.261E-8

Unit

Eccentricity (e)

Value

0.024446

1-sigma variation

9.257E-8

Unit

Inclination (i)

Value

0.5944

1-sigma variation

4.026E-7

Unit

Long. of Ascending Node (Ω)

Value

51.2098

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

10.0300

1-sigma variation

0.0002

Unit

Mean Anomaly (M)

Value

218.24879

1-sigma variation

0.00059

Unit

Perihelion distance

Value

1.008049

1-sigma variation

Unit

Aphelion distance

Value

1.058569

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.018839

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.048119

1-sigma variation

Unit

MOID

Value

0.017197

1-sigma variation

Unit

Orbit Period

Value

383.6575

1-sigma variation

Unit

U parameter

Value

2.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.82426E-15	7.38665E-15	3.27136E-14	-5.86702E-12	-4.68887E-12	-4.90258E-11
e	7.38665E-15	8.56940E-15	3.40001E-14	-9.24319E-12	-1.32306E-12	-5.38394E-11
i	3.27136E-14	3.40001E-14	1.62117E-13	-2.11345E-11	-3.16306E-11	-2.33067E-10
Ω	-5.86702E-12	-9.24319E-12	-2.11345E-11	2.06934E-8	-1.58944E-8	4.59952E-8
ω	-4.68887E-12	-1.32306E-12	-3.16306E-11	-1.58944E-8	2.87162E-8	2.86755E-8
M	-4.90258E-11	-5.38394E-11	-2.33067E-10	4.59952E-8	2.86755E-8	3.53251E-7

Date of computation: 2025-07-29 02:36 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

0.03080

0.04580

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

29.514

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

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

281

Unit

Source

[1]

Unobserved

Value

6632

Unit

Source

[1]

Normalized RMS of residuals

Value

1.29764

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2006-09-14.27062

Unit

Source

[2]

Last Observation

Value

2007-06-22.32603

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

132 (47)

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

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 2006RH120 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	1957-05-14 20:31	605.8	0.1119725	0.0363577	0.0253752
EARTH	1957-09-16 14:24	> 1 mo	0.0764518	0.0553629	0.0076348
EARTH	1969-05-29 20:21	248.6	0.0301919	0.0281152	0.0006946
EARTH	1979-05-18 16:44	16.6	0.0176090	0.0175571	0.0000173
EARTH	1992-12-21 22:44	104.1	0.0775859	0.0775779	0.0000027
EARTH	1993-05-31 01:57	< 1 min	0.1675272	0.1674428	0.0000281
EARTH	2006-09-11 07:37	< 1 min	0.0056101	0.0056100	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 14:24	584.0	0.0287726	0.0287516	0.0000070
EARTH	2044-06-03 21:21	> 1 d	0.0662876	0.0656560	0.0002116
EARTH	2059-12-11 12:49	1021.0	0.0213650	0.0175608	0.0012681
EARTH	2084-06-29 08:10	> 1 mo	0.0314541	0.0252343	0.0318098
EARTH	2106-01-27 06:59	> 1 mo	0.0295927	0.0165092	1.6822606

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
327.74354961	286.87707482	0.01719705	MINIMUM
137.90733282	96.96040875	0.05040535	SADDLE
319.11577524	98.11336890	2.01622394	SADDLE
141.63718103	280.63518589	2.04982063	MAXIMUM

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MOID Plots

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