Asteroids

2017FO help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.951

Aphelion (Q)

1.856

Eccentricity (e)

0.322

Inclination (i)

13.8

deg

Orbit period (P)

607.2

Earth MOID

0.03013

U parameter

9.0

Next Earth close approach

Date

2027-03-15

Nominal distance (from Earth center)

0.10075

15071788

Maximum Brightness

24.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.6

mag

Diameter

13 - 28*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-03-17

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.403359

1-sigma variation

0.004985

Unit

Eccentricity (e)

Value

0.322258

1-sigma variation

0.002866

Unit

Inclination (i)

Value

13.8264

1-sigma variation

0.0030

Unit

Long. of Ascending Node (Ω)

Value

175.9711

1-sigma variation

0.0440

Unit

Arg. of Perihelion (ω)

Value

48.0133

1-sigma variation

0.1290

Unit

Mean Anomaly (M)

Value

171.81213

1-sigma variation

8.69537

Unit

Perihelion distance

Value

0.951115

1-sigma variation

Unit

Aphelion distance

Value

1.855603

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.039900

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.598122

1-sigma variation

Unit

MOID

Value

0.030134

1-sigma variation

Unit

Orbit Period

Value

607.2276

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.48505E-5	1.42853E-5	1.42147E-5	-2.19272E-4	6.43204E-4	-4.33467E-2
e	1.42853E-5	8.21194E-6	8.16706E-6	-1.26048E-4	3.69753E-4	-2.49178E-2
i	1.42147E-5	8.16706E-6	8.87213E-6	-1.25447E-4	3.66776E-4	-2.47941E-2
Ω	-2.19272E-4	-1.26048E-4	-1.25447E-4	1.93478E-3	-5.67537E-3	3.82475E-1
ω	6.43204E-4	3.69753E-4	3.66776E-4	-5.67537E-3	1.66500E-2	-1.12194E0
M	-4.33467E-2	-2.49178E-2	-2.47941E-2	3.82475E-1	-1.12194E0	7.56094E1

Date of computation: 2026-03-17 23:26 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

26.602

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

13 - 28*

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

3344

Unit

Source

[1]

Normalized RMS of residuals

Value

0.702939

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-03-17.16034

Unit

Source

[2]

Last Observation

Value

2017-03-19.3274

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

26 (0)

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

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 2017FO 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	2002-04-20 05:40	> 1 mo	0.1919001	0.0621926	0.2120174
EARTH	2007-04-02 20:14	> 1 w	0.1199841	0.0101760	0.1848462
EARTH	2012-03-25 07:15	> 1 w	0.0597116	0.0270215	0.0989843
EARTH	2017-03-21 21:43	< 1 min	0.0313047	0.0309031	0.0001339
EARTH	2022-03-19 21:54	> 1 w	0.0363633	0.0297417	0.0651457
EARTH	2027-03-15 06:22	> 1 w	0.1007487	0.0258051	0.2725684
EARTH	2105-04-15 21:46	> 1 mo	0.1776153	0.0365886	0.6501666
EARTH	2110-04-01 15:06	> 1 mo	0.1066385	0.0185728	0.6631740
EARTH	2115-03-26 02:51	> 1 mo	0.0500116	0.0306301	0.4442322
EARTH	2120-03-22 10:40	> 1 mo	0.0321187	0.0320328	0.0270755
EARTH	2125-03-19 11:54	> 1 mo	0.0535402	0.0308957	0.8894713

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
328.07112423	78.05271450	0.02921353	MINIMUM
186.50170748	306.96891134	0.90028433	SADDLE
4.79846281	307.76556037	1.93354915	SADDLE
179.61852077	122.04722965	2.85520197	MAXIMUM

Download:

MOID Plots

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