Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
1567 Alikoski (1941 HN)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001567
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08265406135682667 1.0093e-08  
a 3.21267762231088 1.4607e-08 au
q 2.947136768996693 3.0645e-08 au
i 17.27373881213467 4.8471e-07 deg
node 51.44287123268328 3.4707e-06 deg
peri 110.5992746058335 1.8099e-05 deg
M 340.7743876213277 1.5667e-05 deg
tp 2459312.825104270495
(2021-Apr-08.32510427)
9.157e-05 TDB
period 2103.289962416835
5.76
1.4344e-05
3.927e-08
d
yr
n .1711604231621652 1.1673e-09 deg/d
Q 3.478218475625068 1.5814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2957  
   data-arc span      30111 days (82.44 yr)  
   first obs. used      1938-10-15  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .35014  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:35:04  

Additional Information
 Earth MOID = 2.00131 au 
 Jupiter MOID = 1.62632 au 
 T_jup = 3.115 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.78   n/a E2021B10 IRAS observations used: 12
diameter diameter 69.242 km 0.432 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.405 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2004) Minor Planet Bull. 31, 60-61.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.059   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.720   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=1.79, mean=4.59, max.=8.72) deg.
Tholen spectral type spec_T PU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 1 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1567 Alikoski (1941 HN)          Discovered 1941-Apr-22 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1941 HN = 1947 HE = 1947 HG = 1948 OC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-13 09:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin