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1277 Dolores (1933 HA)
Classification: Main-belt Asteroid          SPK-ID: 2001277
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2372578323548477 1.5554e-08  
a 2.700399837907234 8.3667e-09 au
q 2.059708825873982 4.1265e-08 au
i 6.967034739547273 4.1236e-07 deg
node 247.0165097490491 9.1562e-07 deg
peri 47.24822850119217 5.0326e-06 deg
M 265.0918933462181 7.9524e-06 deg
tp 2459823.808316734056
(2022-Sep-01.30831673)
3.7129e-05 TDB
period 1620.841458627185
4.44
7.5329e-06
2.062e-08
d
yr
n .2221068557222812 1.0322e-09 deg/d
Q 3.341090849940487 1.0352e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3627  
   data-arc span      32144 days (88.01 yr)  
   first obs. used      1933-06-17  
   last obs. used      2021-06-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:11:36  

Additional Information
 Earth MOID = 1.0508 au 
 Jupiter MOID = 1.88565 au 
 T_jup = 3.316 
[ 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 11.26   n/a E2021B10 IRAS observations used: 22
diameter diameter 32.587 km 0.802 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.676 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Gocalves, R.M.D. (2019) Minor Planet Bull. 46, 95.]
geometric albedo albedo 0.063   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.730   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.35 deg.
U-B UB 0.378   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.35 deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B Cb   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)

1277 Dolores (1933 HA)          Discovered 1933-Apr-18 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1933 HA = 1925 SE = 1929 NB = 1942 JA = 1951 PB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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