Asteroids

2009JF1 help

Last update: 2025-06-12 07:47 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.496

Aphelion (Q)

3.293

Eccentricity (e)

0.738

Inclination (i)

6.2

deg

Orbit period (P)

952.4

Earth MOID

0.00015

U parameter

8.0

Next Earth close approach

Date

2053-11-26

Nominal distance (from Earth center)

0.06687

10003582

Maximum Brightness

24.9

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

27.6

mag

Diameter

8 - 18*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2009-05-04

Observatory

Mt. Lemmon 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

1.894444

1-sigma variation

0.001141

Unit

Eccentricity (e)

Value

0.738104

1-sigma variation

0.000235

Unit

Inclination (i)

Value

6.1546

1-sigma variation

0.0041

Unit

Long. of Ascending Node (Ω)

Value

45.5346

1-sigma variation

0.0089

Unit

Arg. of Perihelion (ω)

Value

281.3967

1-sigma variation

0.0015

Unit

Mean Anomaly (M)

Value

32.36978

1-sigma variation

2.62498

Unit

Perihelion distance

Value

0.496146

1-sigma variation

Unit

Aphelion distance

Value

3.292741

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.238435

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001217

1-sigma variation

Unit

MOID

Value

0.000150

1-sigma variation

Unit

Orbit Period

Value

952.4035

1-sigma variation

Unit

U parameter

Value

8.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.30276E-6	2.67720E-7	4.65409E-6	1.01323E-5	-1.66889E-6	-2.99611E-3
e	2.67720E-7	5.50191E-8	9.56384E-7	2.08224E-6	-3.42595E-7	-6.15709E-4
i	4.65409E-6	9.56384E-7	1.66366E-5	3.61953E-5	-5.96916E-6	-1.07036E-2
Ω	1.01323E-5	2.08224E-6	3.61953E-5	7.88062E-5	-1.29769E-5	-2.33026E-2
ω	-1.66889E-6	-3.42595E-7	-5.96916E-6	-1.29769E-5	2.21018E-6	3.83815E-3
M	-2.99611E-3	-6.15709E-4	-1.07036E-2	-2.33026E-2	3.83815E-3	6.89053E0

Date of computation: 2025-06-12 07:47 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

27.596

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

8 - 18*

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

5888

Unit

Source

[1]

Normalized RMS of residuals

Value

0.247148

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2009-05-04.42059

Unit

Source

[2]

Last Observation

Value

2009-05-05.659412

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

21 (1)

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 2009JF1 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
VENUS	1978-08-03 20:13	> 1 w	0.0404342	0.0346078	0.1078741
VENUS	1981-04-22 03:04	> 1 w	0.0243251	0.0186222	0.1075918
EARTH	1983-12-03 12:54	> 1 w	0.0836484	0.0364731	0.1332362
EARTH	1991-05-14 14:37	> 1 w	0.1550698	0.0043905	0.1229854
EARTH	2001-11-24 04:03	> 1 d	0.1031595	0.0372365	0.0601455
EARTH	2009-05-05 19:38	< 1 s	0.0019558	0.0019534	0.0000008
EARTH	2022-05-15 04:26	> 1 d	0.1590070	0.0017365	0.1027575
EARTH	2053-11-26 04:12	> 1 d	0.0668698	0.0407630	0.0351187
EARTH	2066-12-05 08:25	> 1 d	0.1277637	0.0427152	0.0480657
EARTH	2095-05-03 08:22	> 1 d	0.0776640	0.0056546	0.0895798
EARTH	2108-05-07 16:56	1416.4	0.0067225	0.0067196	0.0005266
EARTH	2121-05-10 21:50	> 1 mo	0.0610753	0.0071171	1.5503788

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
309.30013358	122.56909875	0.00015044	MINIMUM
49.23647856	324.59745932	0.03799695	MINIMUM
358.63122379	222.50912483	0.52102467	SADDLE
358.77533897	42.86004515	1.48241752	SADDLE
179.77105490	44.47007488	2.31227506	SADDLE
179.84290112	224.49336317	4.29998121	MAXIMUM

Download:

MOID Plots

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