Asteroids

2017FY101 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.645

Aphelion (Q)

1.328

Eccentricity (e)

0.346

Inclination (i)

2.5

deg

Orbit period (P)

357.8

Earth MOID

0.00214

U parameter

6.6

Next Earth close approach

Date

2053-11-16

Nominal distance (from Earth center)

0.08928

13355626

Maximum Brightness

25.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

27.2

mag

Diameter

10 - 22*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-03-27

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

0.986359

1-sigma variation

0.000054

Unit

Eccentricity (e)

Value

0.346012

1-sigma variation

0.000113

Unit

Inclination (i)

Value

2.4942

1-sigma variation

0.0014

Unit

Long. of Ascending Node (Ω)

Value

5.9574

1-sigma variation

0.0138

Unit

Arg. of Perihelion (ω)

Value

295.1660

1-sigma variation

0.0158

Unit

Mean Anomaly (M)

Value

226.07575

1-sigma variation

0.22040

Unit

Perihelion distance

Value

0.645067

1-sigma variation

Unit

Aphelion distance

Value

1.327651

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.245342

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.019246

1-sigma variation

Unit

MOID

Value

0.002144

1-sigma variation

Unit

Orbit Period

Value

357.8089

1-sigma variation

Unit

U parameter

Value

6.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.94735E-9	6.15253E-9	7.42639E-8	7.51636E-7	-8.55354E-7	-1.19656E-5
e	6.15253E-9	1.28661E-8	1.55038E-7	1.56898E-6	-1.78417E-6	-2.49766E-5
i	7.42639E-8	1.55038E-7	1.87213E-6	1.89396E-5	-2.15522E-5	-3.01495E-4
Ω	7.51636E-7	1.56898E-6	1.89396E-5	1.91684E-4	-2.18137E-4	-3.05148E-3
ω	-8.55354E-7	-1.78417E-6	-2.15522E-5	-2.18137E-4	2.48317E-4	3.47264E-3
M	-1.19656E-5	-2.49766E-5	-3.01495E-4	-3.05148E-3	3.47264E-3	4.85779E-2

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

27.197

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

10 - 22*

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

[-]

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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

3136

Unit

Source

[1]

Normalized RMS of residuals

Value

0.384416

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-03-27.39988

Unit

Source

[2]

Last Observation

Value

2017-03-29.667334

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

54 (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

Close Approaches for 2017FY101 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	1954-02-20 16:06	70.6	0.0418755	0.0410834	0.0002655
VENUS	1976-12-03 06:33	> 1 d	0.0424386	0.0342568	0.0097006
VENUS	1989-08-25 05:28	> 1 d	0.0444544	0.0365236	0.0081320
EARTH	1991-11-18 14:48	628.0	0.1714893	0.1359127	0.0119158
EARTH	1992-11-15 08:50	611.6	0.1097144	0.0767495	0.0112143
EARTH	1993-11-13 08:20	544.2	0.0539973	0.0334030	0.0089036
EARTH	1994-11-11 17:02	403.6	0.0338871	0.0314457	0.0035846
EARTH	1995-11-10 15:55	150.1	0.0784874	0.0524651	0.0091308
EARTH	1996-11-11 08:37	874.4	0.1366490	0.1081876	0.0095518
EARTH	1997-11-21 19:40	> 1 d	0.1933728	0.1688841	0.0081735
VENUS	2012-06-02 00:34	390.7	0.0360935	0.0360757	0.0000558
EARTH	2014-03-23 18:57	275.1	0.1728869	0.1701254	0.0009205
EARTH	2015-03-31 00:43	42.8	0.1138699	0.1117411	0.0007096
EARTH	2016-03-30 17:35	6.1	0.0535662	0.0524294	0.0003789
EARTH	2017-03-29 16:50	< 1 s	0.0034566	0.0034532	0.0000011
EARTH	2018-03-25 16:53	20.3	0.1273261	0.1260788	0.0004158
VENUS	2022-04-09 21:50	582.6	0.0431228	0.0398998	0.0011786
VENUS	2039-01-24 11:06	1238.2	0.0496082	0.0373718	0.0067165
VENUS	2048-09-24 06:13	> 1 d	0.0488225	0.0367568	0.0058729
EARTH	2053-11-16 19:38	438.4	0.0892768	0.0661152	0.0079096
EARTH	2054-11-13 07:27	243.6	0.0482201	0.0339490	0.0058839
EARTH	2055-11-18 14:05	1363.5	0.1618760	0.1434422	0.0061581
EARTH	2064-03-19 20:16	211.4	0.1850038	0.1828042	0.0007332
EARTH	2065-03-30 23:59	48.0	0.0687783	0.0633329	0.0018152
EARTH	2066-03-28 15:57	159.3	0.0488870	0.0410671	0.0026076
EARTH	2067-03-24 10:25	187.1	0.1715331	0.1624855	0.0030159
EARTH	2101-11-19 01:56	73.4	0.1189947	0.1162468	0.0009170
EARTH	2102-11-15 04:05	45.0	0.0317000	0.0312993	0.0001424
EARTH	2103-11-15 18:48	28.7	0.1337409	0.1335128	0.0000760
EARTH	2113-03-31 23:16	91.2	0.0886780	0.0773750	0.0037682
EARTH	2114-03-30 04:25	149.3	0.0335055	0.0216703	0.0039556
EARTH	2115-03-25 18:50	129.6	0.1639730	0.1548947	0.0030261
VENUS	2118-06-05 18:03	28.7	0.0496983	0.0484892	0.0004117

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
267.87221022	85.71442657	0.00222558	MINIMUM
90.04408956	309.85717539	0.03082428	MINIMUM
179.10005769	18.05217773	0.34608943	SADDLE
358.52054476	197.20779802	0.37181677	SADDLE
358.76580625	17.55467608	1.62921563	SADDLE
179.43945633	198.27940707	2.34258268	MAXIMUM

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MOID Plots

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