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970 Primula (A921 WK)
Classification: Main-belt Asteroid          SPK-ID: 2000970
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .271655582573921 4.0673e-08  
a 2.559813849459202 8.255e-09 au
q 1.864426126903571 1.0825e-07 au
i 5.033092998349791 4.056e-06 deg
node 310.7736478347184 4.2298e-05 deg
peri 95.5642326468827 4.342e-05 deg
M 17.5014866011975 1.1303e-05 deg
tp 2458927.775048117789
(2020-Mar-19.27504812)
4.6706e-05 TDB
period 1495.929075865166
4.10
7.2362e-06
1.981e-08
d
yr
n .240653120397299 1.1641e-09 deg/d
Q 3.255201572014833 1.0498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2455  
   data-arc span      36130 days (98.92 yr)  
   first obs. used      1921-11-29  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:51  

Additional Information
 Earth MOID = .882171 au 
 Jupiter MOID = 2.18769 au 
 T_jup = 3.378 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.3   n/a MPO502162  
diameter diameter 9.204 km 0.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.777 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Maleszewski, C.; Clark, M. (2004) Minor Planet Bull. 31, 93-94.]
[Sada, P.V.; Canizales, E.D.; Armada, E.M. (2004) Minor Planet Bull. 31, 49-50.]
[Clark, M. (2012) Minor Planet Bull. 39, 63-65.]
geometric albedo albedo 0.229   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B S   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)

970 Primula (A921 WK)          Discovered 1921-Nov-29 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A921 WK = 1929 RN = 1966 TG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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