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654 Zelinda (A908 AM)
Classification: Main-belt Asteroid          SPK-ID: 2000654
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 102 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309674409429993 1.957e-08  
a 2.297239513326676 3.088e-09 au
q 1.766651981700472 4.5183e-08 au
i 18.12597725675609 3.4021e-06 deg
node 278.4436885237267 1.0006e-05 deg
peri 213.9496382547552 1.1522e-05 deg
M 88.38145901414659 7.0958e-06 deg
tp 2458688.275837514847
(2019-Jul-23.77583752)
2.4657e-05 TDB
period 1271.767854348996
3.48
2.5643e-06
7.021e-09
d
yr
n .2830705295537446 5.7077e-10 deg/d
Q 2.827827044952879 3.8013e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2756  
   # delay obs. used      12  
   # Doppler obs. used      0  
   data-arc span      41019 days (112.30 yr)  
   first obs. used      1908-01-04  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:09:59  

Additional Information
 Earth MOID = .804861 au 
 Jupiter MOID = 2.35039 au 
 T_jup = 3.494 
[ 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 8.52   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 14
diameter diameter 160.736 km 1.342 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 31.735 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1975) Astron. Astrophys. 44, 85-89.]
[Warner, B.D.; Higgins, D. (2008) Minor Planet Bull. 35, 32-33.]
[Stephens, R.D. (2009) Minor Planet Bull. 36, 125-126.]
[Stephens, R.D. (2015) Minor Planet Bull. 42, 70-74.]
geometric albedo albedo 0.027   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.698   0.017 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.20, mean=15.16, max.=22.34) deg.
U-B UB 0.328   0.036 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=8.20, mean=15.16, max.=22.34) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Ch   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)

654 Zelinda (A908 AM)          Discovered 1908-Jan-04 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A908 AM = 1965 QG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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