Asteroids

2017MZ8 help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.974

Aphelion (Q)

3.089

Eccentricity (e)

0.521

Inclination (i)

4.3

deg

Orbit period (P)

1057.6

Earth MOID

0.01366

U parameter

9.0

Next Earth close approach

Date

2043-10-01

Nominal distance (from Earth center)

0.03151

4713107

Maximum Brightness

19.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

22.5

mag

Diameter

90 - 190*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-06-22

Observatory

Pan-STARRS 1, Haleakala

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

2.031440

1-sigma variation

0.445233

Unit

Eccentricity (e)

Value

0.520756

1-sigma variation

0.182130

Unit

Inclination (i)

Value

4.2807

1-sigma variation

0.4422

Unit

Long. of Ascending Node (Ω)

Value

25.9023

1-sigma variation

16.2651

Unit

Arg. of Perihelion (ω)

Value

325.7128

1-sigma variation

38.4229

Unit

Mean Anomaly (M)

Value

11.94073

1-sigma variation

362.16200

Unit

Perihelion distance

Value

0.973555

1-sigma variation

Unit

Aphelion distance

Value

3.089324

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.038395

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.596434

1-sigma variation

Unit

MOID

Value

0.013655

1-sigma variation

Unit

Orbit Period

Value

1057.5584

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.98232E-1	7.98189E-2	1.96244E-1	-6.34927E0	1.53862E1	-1.61245E2
e	7.98189E-2	3.31715E-2	7.78830E-2	-2.80787E0	6.73490E0	-6.49744E1
i	1.96244E-1	7.78830E-2	1.95524E-1	-6.00918E0	1.46384E1	-1.59574E2
Ω	-6.34927E0	-2.80787E0	-6.00918E0	2.64555E2	-6.24193E2	5.17643E3
ω	1.53862E1	6.73490E0	1.46384E1	-6.24193E2	1.47632E3	-1.25408E4
M	-1.61245E2	-6.49744E1	-1.59574E2	5.17643E3	-1.25408E4	1.31161E5

Date of computation: 2026-07-30 14:25 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

22.456

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

90 - 190*

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

3370

Unit

Source

[1]

Normalized RMS of residuals

Value

0.332085

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-06-22.55376

Unit

Source

[2]

Last Observation

Value

2017-06-23.616624

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

7 (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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

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 2017MZ8 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	1959-11-01 15:15	> 1 mo	0.1885299	0.0000000	157.2761567
EARTH	1988-08-29 07:57	> 1 mo	0.0632842	0.0027088	3.5009284
EARTH	2017-07-24 05:36	> 1 d	0.1901503	0.1571105	0.0110142
EARTH	2043-10-01 23:55	> 1 mo	0.0315052	0.0000000	28.0850949
EARTH	2069-09-16 06:57	> 1 mo	0.0568349	0.0000000	60.0670762
EARTH	2095-08-08 17:54	> 1 mo	0.0838845	0.0637464	71.4360470

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
13.97954287	272.82569821	0.01365531	MINIMUM
358.42225106	65.36033886	1.96645509	SADDLE
179.42283046	66.67598892	2.09708711	SADDLE
179.59199183	246.76693035	4.09521550	MAXIMUM

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MOID Plots

Click on the images to zoom-in and zoom-out

Level lines of the squared distance function

2017MZ8

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2026-10-16.705	61329.705	0.115	0.026	1.52 ± 394.444	4.24E5	2.52E-9	4.92E1	-5.94
2026-10-17.100	61330.100	0.123	0.008	1.52 ± 441.872	7.03E6	1.73E-10	4.98E1	-7.10
2029-10-16.384	62425.384	0.110	0.025	1.52 ± 389.770	5.74E5	1.84E-9	4.86E1	-6.55
2029-10-16.599	62425.599	0.115	0.016	1.52 ± 399.763	5.65E6	2.07E-10	4.93E1	-7.49
2036-10-21.597	64987.597	0.220	0.225	1.47 ± 406.794	9.71E5	1.99E-11	5.78E1	-8.84
2037-07-20.966	65259.966	0.909	0.224	1.14 ± 1875.417	1.09E7	1.40E-11	1.91E2	-8.61
2039-10-21.980	66082.980	0.204	0.202	1.47 ± 416.087	1.10E6	3.00E-11	5.63E1	-8.77
2042-10-19.852	67176.852	0.191	0.121	1.49 ± 374.464	1.30E6	2.40E-10	5.54E1	-7.96
2043-12-11.521	67594.521	0.907	0.115	1.14 ± 2590.574	1.34E7	1.78E-11	1.90E2	-8.69
2045-08-15.733	68207.733	0.915	0.143	0.26 ± 508.552	8.49E6	1.08E-10	1.94E2	-7.94
2045-10-19.423	68272.423	0.180	0.108	1.49 ± 378.138	1.42E6	2.77E-10	5.45E1	-7.98
2048-10-18.464	69367.464	0.172	0.076	1.50 ± 394.147	1.40E6	4.47E-10	5.37E1	-7.82
2051-10-19.380	70463.380	0.164	0.081	1.50 ± 378.221	1.44E6	4.72E-10	5.30E1	-7.86
2052-10-13.214	70823.214	0.027	0.159	1.56 ± 442.649	1.54E6	1.37E-11	4.28E1	-9.49
2055-10-14.015	71919.015	0.032	0.155	1.57 ± 438.705	1.59E6	1.77E-11	4.32E1	-9.41
2061-10-03.507	74100.507	0.785	0.067	1.57 ± 2721.690	2.02E6	1.02E-10	1.51E2	-8.30
2061-10-13.895	74110.895	0.041	0.139	1.56 ± 414.976	2.03E6	2.95E-11	4.37E1	-9.27
2064-10-14.863	75207.863	0.045	0.096	1.55 ± 428.012	1.98E6	1.40E-10	4.42E1	-8.62
2066-10-16.926	75939.926	0.146	0.003	1.53 ± 351.375	8.12E5	2.03E-9	5.12E1	-7.42
2066-10-17.038	75940.038	0.148	0.000	0.93 ± 349.530	1.31E6	2.52E-9	5.12E1	-7.33
2067-10-15.549	76303.549	0.048	0.097	1.56 ± 446.913	1.99E6	1.33E-10	4.41E1	-8.68
2069-10-16.771	77035.771	0.141	0.001	1.53 ± 941.406	1.74E6	6.58E-10	5.11E1	-7.95
2069-10-17.277	77036.277	0.150	0.016	1.53 ± 414.286	7.41E6	1.30E-10	5.18E1	-8.65
2070-10-15.660	77399.660	0.051	0.084	1.55 ± 423.927	2.33E6	1.67E-10	4.43E1	-8.61
2072-10-15.945	78130.945	0.138	0.023	1.54 ± 369.289	1.95E6	5.75E-10	5.08E1	-8.04
2072-10-16.659	78131.659	0.151	0.004	1.54 ± 605.534	1.27E7	7.77E-11	5.19E1	-8.90
2073-10-15.103	78495.103	0.053	0.093	1.56 ± 418.930	3.02E6	1.10E-10	4.47E1	-8.81
2075-10-16.720	79226.720	0.125	0.023	1.34 ± 307.998	1.60E7	6.64E-11	4.98E1	-9.01
2075-10-17.302	79227.302	0.135	0.001	1.53 ± 947.165	1.81E6	6.30E-10	5.06E1	-8.03
2076-10-15.838	79591.838	0.055	0.058	1.54 ± 408.518	2.51E6	2.64E-10	4.47E1	-8.45
2078-10-15.581	80321.581	0.125	0.053	1.55 ± 396.018	6.68E6	1.01E-10	4.99E1	-8.85
2078-10-15.974	80321.974	0.132	0.040	1.55 ± 389.280	1.68E6	5.67E-10	5.04E1	-8.10
2078-10-17.067	80323.067	0.151	0.004	1.53 ± 393.918	2.98E7	3.84E-11	5.18E1	-9.26
2079-10-16.492	80687.492	0.057	0.061	1.54 ± 405.198	2.42E6	2.64E-10	4.51E1	-8.48
2082-10-16.504	81783.504	0.059	0.052	1.55 ± 415.300	2.64E6	2.80E-10	4.50E1	-8.47
2085-10-15.960	82878.960	0.061	0.061	1.54 ± 403.556	3.09E6	2.12E-10	4.52E1	-8.61
2088-10-16.481	83975.481	0.062	0.033	1.53 ± 442.215	2.87E6	2.99E-10	4.52E1	-8.48
2091-10-17.088	85071.088	0.064	0.037	1.53 ± 442.196	2.80E6	2.94E-10	4.52E1	-8.51
2094-10-16.976	86166.976	0.065	0.032	1.53 ± 447.783	3.15E6	2.72E-10	4.56E1	-8.56
2097-10-16.416	87262.416	0.066	0.041	1.55 ± 419.653	3.63E6	2.27E-10	4.54E1	-8.66
2100-10-17.688	88358.688	0.067	0.022	1.54 ± 413.531	3.15E6	3.02E-10	4.57E1	-8.55
2102-10-17.634	89088.634	0.040	0.049	1.53 ± 395.133	4.08E6	1.88E-10	4.37E1	-8.78
2102-10-17.699	89088.699	0.041	0.049	1.54 ± 414.831	5.21E6	1.45E-10	4.38E1	-8.89
2103-10-18.304	89454.304	0.068	0.026	1.53 ± 424.046	3.81E6	2.43E-10	4.57E1	-8.66
2105-10-16.352	90183.352	0.118	0.049	1.20 ± 252.920	6.51E6	1.22E-10	4.93E1	-8.94
2106-10-18.095	90550.095	0.069	0.025	1.54 ± 421.491	4.14E6	2.18E-10	4.58E1	-8.72
2108-10-15.640	91278.640	0.119	0.064	1.56 ± 376.996	1.21E6	2.24E-10	4.96E1	-8.69
2108-10-17.499	91280.499	0.043	0.036	1.53 ± 417.667	1.36E6	7.14E-10	4.40E1	-8.23
2108-10-17.523	91280.523	0.044	0.036	1.53 ± 411.549	1.25E6	7.55E-10	4.41E1	-8.20
2109-10-17.507	91645.507	0.070	0.035	1.54 ± 399.659	4.77E6	1.84E-10	4.59E1	-8.81
2111-10-17.610	92375.610	0.121	0.020	1.55 ± 489.312	3.55E6	3.90E-10	4.95E1	-8.47
2111-10-19.348	92377.348	0.044	0.001	1.51 ± 895.360	3.41E7	3.04E-11	4.41E1	-9.61
2111-10-19.376	92377.376	0.042	0.001	1.50 ± 896.937	4.63E7	2.17E-11	4.38E1	-9.76
2111-10-19.576	92377.576	0.048	0.008	1.51 ± 410.082	2.55E7	4.35E-11	4.44E1	-9.46
2112-10-07.848	92731.848	0.674	0.016	1.60 ± 276.670	5.92E6	1.60E-10	1.24E2	-8.54
2112-10-17.543	92741.543	0.070	0.024	1.54 ± 414.894	4.34E6	2.13E-10	4.59E1	-8.76
2114-10-16.743	93470.743	0.121	0.042	1.55 ± 368.631	8.23E6	1.40E-10	4.96E1	-8.92
2115-10-18.218	93837.218	0.071	0.027	1.54 ± 426.197	4.61E6	1.92E-10	4.58E1	-8.82
2117-10-19.074	94569.074	0.045	0.009	1.52 ± 421.884	6.07E7	1.76E-11	4.41E1	-9.88
2117-10-19.232	94569.232	0.050	0.015	1.51 ± 414.650	1.66E7	6.58E-11	4.44E1	-9.30
2117-11-22.784	94603.784	0.773	0.224	1.26 ± 1359.109	4.28E7	1.16E-10	1.49E2	-8.64
2118-10-17.951	94932.951	0.072	0.027	1.54 ± 432.270	3.64E6	2.34E-10	4.57E1	-8.75
2120-10-18.630	95664.630	0.049	0.004	1.52 ± 402.865	1.42E7	7.83E-11	4.43E1	-9.24
2120-10-18.726	95664.726	0.053	0.007	1.53 ± 411.753	4.72E7	2.31E-11	4.46E1	-9.77
2121-10-17.357	96028.357	0.072	0.037	1.55 ± 406.249	3.47E6	2.43E-10	4.61E1	-8.74
2121-10-19.911	96030.911	0.140	0.089	1.51 ± 463.263	3.90E6	1.06E-10	5.08E1	-9.07
2121-10-19.994	96030.994	0.140	0.089	1.30 ± 212.613	3.06E6	1.02E-10	5.10E1	-9.08


Based on 7 optical observations (of which 0 are rejected as outliers) from 2017/06/22.554 to 2017/06/23.617.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 1.51 and 1.56 Earth radii.
Coordinates for LOV = CAR scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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