Asteroids

2017FD157 help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.682

Aphelion (Q)

1.579

Eccentricity (e)

0.397

Inclination (i)

8.3

deg

Orbit period (P)

439.0

Earth MOID

0.00028

U parameter

0.3

Next Earth close approach

Date

2027-09-11

Nominal distance (from Earth center)

0.11604

17360049

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

22.3

mag

Diameter

90 - 200*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-03-31

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.130469

1-sigma variation

5.438E-9

Unit

Eccentricity (e)

Value

0.396819

1-sigma variation

7.015E-8

Unit

Inclination (i)

Value

8.2961

1-sigma variation

6.422E-6

Unit

Long. of Ascending Node (Ω)

Value

172.8146

1-sigma variation

2.762E-5

Unit

Arg. of Perihelion (ω)

Value

263.9164

1-sigma variation

2.380E-5

Unit

Mean Anomaly (M)

Value

129.40809

1-sigma variation

0.00002

Unit

Perihelion distance

Value

0.681877

1-sigma variation

Unit

Aphelion distance

Value

1.579061

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.000818

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.092056

1-sigma variation

Unit

MOID

Value

0.000282

1-sigma variation

Unit

Orbit Period

Value

439.0223

1-sigma variation

Unit

U parameter

Value

0.3

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.95705E-17	-2.51741E-16	-2.97561E-15	-1.28449E-14	2.56903E-14	-8.48839E-14
e	-2.51741E-16	4.92048E-15	3.80318E-15	4.48431E-13	-2.11799E-13	5.62330E-14
i	-2.97561E-15	3.80318E-15	4.12486E-11	1.09641E-10	-1.04835E-10	7.85960E-13
Ω	-1.28449E-14	4.48431E-13	1.09641E-10	7.63041E-10	-5.70954E-10	-1.94205E-10
ω	2.56903E-14	-2.11799E-13	-1.04835E-10	-5.70954E-10	5.66328E-10	-4.61082E-11
M	-8.48839E-14	5.62330E-14	7.85960E-13	-1.94205E-10	-4.61082E-11	5.18952E-10

Date of computation: 2025-09-10 00:30 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

22.326

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

90 - 200*

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

2203

Unit

Source

[1]

Unobserved

Value

919

Unit

Source

[1]

Normalized RMS of residuals

Value

0.632203

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-03-31.14783

Unit

Source

[2]

Last Observation

Value

2023-04-12.256225

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

104 (2)

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 2017FD157 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	1994-03-16 15:10	< 1 min	0.0389780	0.0389776	0.0000001
EARTH	1997-09-12 09:21	< 1 min	0.1347387	0.1347344	0.0000014
EARTH	2003-09-07 04:40	< 1 min	0.0726987	0.0726955	0.0000011
EARTH	2005-03-20 06:01	< 1 min	0.1403938	0.1403911	0.0000009
EARTH	2009-09-04 08:00	< 1 min	0.0431232	0.0431219	0.0000004
EARTH	2011-03-19 05:50	< 1 min	0.1093635	0.1093623	0.0000004
EARTH	2015-09-04 11:55	< 1 min	0.0391000	0.0390994	0.0000002
EARTH	2017-03-18 19:45	< 1 min	0.1134818	0.1134817	0.0000001
EARTH	2021-09-06 04:01	< 1 min	0.0626662	0.0626655	0.0000002
EARTH	2023-03-21 03:31	< 1 min	0.1536473	0.1536465	0.0000003
EARTH	2027-09-11 06:52	< 1 min	0.1160448	0.1160437	0.0000004
EARTH	2033-09-24 06:10	< 1 min	0.1907243	0.1907228	0.0000005
EARTH	2082-03-07 15:07	< 1 min	0.1172940	0.1172924	0.0000005
EARTH	2086-08-27 12:30	< 1 min	0.1357698	0.1357681	0.0000006
EARTH	2088-03-12 01:32	< 1 min	0.0278971	0.0278954	0.0000005
EARTH	2092-08-28 10:22	< 1 min	0.1052021	0.1052004	0.0000006
EARTH	2094-03-13 07:24	< 1 min	0.0147311	0.0147290	0.0000007
EARTH	2098-08-24 05:39	< 1 min	0.1871834	0.1871756	0.0000026
EARTH	2100-03-07 07:47	< 1 min	0.1360114	0.1359998	0.0000038

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
72.33389341	69.70874053	0.00004692	MINIMUM
287.33975827	238.99853824	0.03341713	MINIMUM
359.63158605	334.45834968	0.32543538	SADDLE
179.93619484	154.12806468	0.59296465	SADDLE
358.75794665	153.16146234	1.69224077	SADDLE
179.27475066	333.69260418	2.55800266	MAXIMUM

Download:

MOID Plots

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