Asteroids

2017EA help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.684

Aphelion (Q)

2.730

Eccentricity (e)

0.600

Inclination (i)

1.4

deg

Orbit period (P)

814.5

Earth MOID

0.00019

U parameter

6.7

Next Earth close approach

Date

2046-02-25

Nominal distance (from Earth center)

0.09579

14329590

Maximum Brightness

28.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

30.9

mag

Diameter

1.8 - 4*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-03-02

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.706820

1-sigma variation

0.000202

Unit

Eccentricity (e)

Value

0.599515

1-sigma variation

0.000051

Unit

Inclination (i)

Value

1.3724

1-sigma variation

0.0003

Unit

Long. of Ascending Node (Ω)

Value

161.7004

1-sigma variation

3.195E-5

Unit

Arg. of Perihelion (ω)

Value

80.5948

1-sigma variation

0.0020

Unit

Mean Anomaly (M)

Value

35.51162

1-sigma variation

0.26513

Unit

Perihelion distance

Value

0.683556

1-sigma variation

Unit

Aphelion distance

Value

2.730083

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.004367

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.203804

1-sigma variation

Unit

MOID

Value

0.000189

1-sigma variation

Unit

Orbit Period

Value

814.4790

1-sigma variation

Unit

U parameter

Value

6.7

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.09157E-8	1.02737E-8	5.94739E-8	6.31618E-9	-3.91620E-7	-5.36293E-5
e	1.02737E-8	2.58393E-9	1.48441E-8	1.57914E-9	-9.74003E-8	-1.34660E-5
i	5.94739E-8	1.48441E-8	8.90725E-8	9.44472E-9	-5.88835E-7	-7.79531E-5
Ω	6.31618E-9	1.57914E-9	9.44472E-9	1.02095E-9	-6.19675E-8	-8.27872E-6
ω	-3.91620E-7	-9.74003E-8	-5.88835E-7	-6.19675E-8	3.95175E-6	5.13298E-4
M	-5.36293E-5	-1.34660E-5	-7.79531E-5	-8.27872E-6	5.13298E-4	7.02933E-2

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

30.874

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

1.8 - 4*

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

3345

Unit

Source

[1]

Normalized RMS of residuals

Value

0.394334

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-03-01.15023

Unit

Source

[2]

Last Observation

Value

2017-03-02.49375

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

67 (6)

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 2017EA 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	1961-08-04 02:57	> 1 mo	0.1940898	0.0395302	2.7775190
VENUS	1977-12-14 23:46	> 1 mo	0.0263380	0.0027691	12.7542372
EARTH	2004-03-01 05:56	> 1 d	0.0018320	0.0016918	0.0063669
EARTH	2017-03-02 14:04	< 1 s	0.0001397	0.0001397	0.0000000
EARTH	2046-02-25 17:03	> 1 d	0.0957874	0.0277999	0.0226626
EARTH	2048-08-25 13:45	> 1 d	0.1292332	0.0695996	0.0199002
EARTH	2077-08-19 05:25	> 1 d	0.0147536	0.0066861	0.0205924
VENUS	2088-08-24 04:57	> 1 mo	0.0182465	0.0163415	0.0722105
EARTH	2113-03-07 20:57	> 1 mo	0.0421977	0.0005945	2.3148145
VENUS	2113-05-04 01:33	> 1 mo	0.0342163	0.0308312	0.6233267
EARTH	2122-02-23 18:07	> 1 w	0.1690828	0.0061868	0.3132853
EARTH	2124-08-26 22:32	> 1 mo	0.1259149	0.0048010	1.0138676

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
314.30504801	59.92359386	0.00017009	MINIMUM
47.34305871	224.11760584	0.00706299	MINIMUM
1.21309212	142.51472012	0.33137274	SADDLE
1.16787256	322.44722698	1.67070421	SADDLE
180.30257966	321.36043927	1.74354401	SADDLE
180.30505960	141.36777531	3.74450375	MAXIMUM

Download:

MOID Plots

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